elongation factor 4 [Vibrio mimicus]
Protein Classification
elongation factor 4( domain architecture ID 11422313)
elongation factor 4 has a ribosome-dependent GTPase activity but does not have effect on translational accuracy
List of domain hits
| Name | Accession | Description | Interval | E-value | |||||||||
| LepA | COG0481 | Translation elongation factor EF-4, membrane-bound GTPase [Translation, ribosomal structure ... |
1-595 | 0e+00 | |||||||||
Translation elongation factor EF-4, membrane-bound GTPase [Translation, ribosomal structure and biogenesis]; : Pssm-ID: 440249 [Multi-domain] Cd Length: 598 Bit Score: 1234.89 E-value: 0e+00
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| Name | Accession | Description | Interval | E-value | ||||||||||
| LepA | COG0481 | Translation elongation factor EF-4, membrane-bound GTPase [Translation, ribosomal structure ... |
1-595 | 0e+00 | ||||||||||
Translation elongation factor EF-4, membrane-bound GTPase [Translation, ribosomal structure and biogenesis]; Pssm-ID: 440249 [Multi-domain] Cd Length: 598 Bit Score: 1234.89 E-value: 0e+00
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| lepA | TIGR01393 | elongation factor 4; LepA (GUF1 in Saccaromyces), now called elongation factor 4, is a ... |
2-595 | 0e+00 | ||||||||||
elongation factor 4; LepA (GUF1 in Saccaromyces), now called elongation factor 4, is a GTP-binding membrane protein related to EF-G and EF-Tu. Two types of phylogenetic tree, rooted by other GTP-binding proteins, suggest that eukaryotic homologs (including GUF1 of yeast) originated within the bacterial LepA family. The function is unknown. [Unknown function, General] Pssm-ID: 130460 [Multi-domain] Cd Length: 595 Bit Score: 1071.18 E-value: 0e+00
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| LepA | cd01890 | LepA also known as Elongation Factor 4 (EF4); LepA (also known as elongation factor 4, EF4) ... |
5-183 | 9.52e-128 | ||||||||||
LepA also known as Elongation Factor 4 (EF4); LepA (also known as elongation factor 4, EF4) belongs to the GTPase family and exhibits significant homology to the translation factors EF-G and EF-Tu, indicating its possible involvement in translation and association with the ribosome. LepA is ubiquitous in bacteria and eukaryota (e.g. yeast GUF1p), but is missing from archaea. This pattern of phyletic distribution suggests that LepA evolved through a duplication of the EF-G gene in bacteria, followed by early transfer into the eukaryotic lineage, most likely from the promitochondrial endosymbiont. Yeast GUF1p is not essential and mutant cells did not reveal any marked phenotype. Pssm-ID: 206677 [Multi-domain] Cd Length: 179 Bit Score: 372.25 E-value: 9.52e-128
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| GTP_EFTU | pfam00009 | Elongation factor Tu GTP binding domain; This domain contains a P-loop motif, also found in ... |
2-182 | 1.90e-67 | ||||||||||
Elongation factor Tu GTP binding domain; This domain contains a P-loop motif, also found in several other families such as pfam00071, pfam00025 and pfam00063. Elongation factor Tu consists of three structural domains, this plus two C-terminal beta barrel domains. Pssm-ID: 425418 [Multi-domain] Cd Length: 187 Bit Score: 217.39 E-value: 1.90e-67
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| PRK13351 | PRK13351 | elongation factor G-like protein; |
1-476 | 1.56e-51 | ||||||||||
elongation factor G-like protein; Pssm-ID: 237358 [Multi-domain] Cd Length: 687 Bit Score: 188.24 E-value: 1.56e-51
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| EFG_C | smart00838 | Elongation factor G C-terminus; This domain includes the carboxyl terminal regions of ... |
401-477 | 8.46e-06 | ||||||||||
Elongation factor G C-terminus; This domain includes the carboxyl terminal regions of Elongation factor G, elongation factor 2 and some tetracycline resistance proteins and adopt a ferredoxin-like fold. Pssm-ID: 197906 [Multi-domain] Cd Length: 85 Bit Score: 44.03 E-value: 8.46e-06
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| Name | Accession | Description | Interval | E-value | ||||||||||
| LepA | COG0481 | Translation elongation factor EF-4, membrane-bound GTPase [Translation, ribosomal structure ... |
1-595 | 0e+00 | ||||||||||
Translation elongation factor EF-4, membrane-bound GTPase [Translation, ribosomal structure and biogenesis]; Pssm-ID: 440249 [Multi-domain] Cd Length: 598 Bit Score: 1234.89 E-value: 0e+00
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| lepA | TIGR01393 | elongation factor 4; LepA (GUF1 in Saccaromyces), now called elongation factor 4, is a ... |
2-595 | 0e+00 | ||||||||||
elongation factor 4; LepA (GUF1 in Saccaromyces), now called elongation factor 4, is a GTP-binding membrane protein related to EF-G and EF-Tu. Two types of phylogenetic tree, rooted by other GTP-binding proteins, suggest that eukaryotic homologs (including GUF1 of yeast) originated within the bacterial LepA family. The function is unknown. [Unknown function, General] Pssm-ID: 130460 [Multi-domain] Cd Length: 595 Bit Score: 1071.18 E-value: 0e+00
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| LepA | cd01890 | LepA also known as Elongation Factor 4 (EF4); LepA (also known as elongation factor 4, EF4) ... |
5-183 | 9.52e-128 | ||||||||||
LepA also known as Elongation Factor 4 (EF4); LepA (also known as elongation factor 4, EF4) belongs to the GTPase family and exhibits significant homology to the translation factors EF-G and EF-Tu, indicating its possible involvement in translation and association with the ribosome. LepA is ubiquitous in bacteria and eukaryota (e.g. yeast GUF1p), but is missing from archaea. This pattern of phyletic distribution suggests that LepA evolved through a duplication of the EF-G gene in bacteria, followed by early transfer into the eukaryotic lineage, most likely from the promitochondrial endosymbiont. Yeast GUF1p is not essential and mutant cells did not reveal any marked phenotype. Pssm-ID: 206677 [Multi-domain] Cd Length: 179 Bit Score: 372.25 E-value: 9.52e-128
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| GTP_EFTU | pfam00009 | Elongation factor Tu GTP binding domain; This domain contains a P-loop motif, also found in ... |
2-182 | 1.90e-67 | ||||||||||
Elongation factor Tu GTP binding domain; This domain contains a P-loop motif, also found in several other families such as pfam00071, pfam00025 and pfam00063. Elongation factor Tu consists of three structural domains, this plus two C-terminal beta barrel domains. Pssm-ID: 425418 [Multi-domain] Cd Length: 187 Bit Score: 217.39 E-value: 1.90e-67
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| TypA | COG1217 | Predicted membrane GTPase TypA/BipA involved in stress response [Signal transduction ... |
1-446 | 5.59e-65 | ||||||||||
Predicted membrane GTPase TypA/BipA involved in stress response [Signal transduction mechanisms]; Pssm-ID: 440830 [Multi-domain] Cd Length: 606 Bit Score: 223.74 E-value: 5.59e-65
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| LepA_C | pfam06421 | GTP-binding protein LepA C-terminus; This family consists of the C-terminal region of several ... |
487-592 | 1.19e-53 | ||||||||||
GTP-binding protein LepA C-terminus; This family consists of the C-terminal region of several pro- and eukaryotic GTP-binding LepA proteins. Pssm-ID: 461905 [Multi-domain] Cd Length: 107 Bit Score: 177.98 E-value: 1.19e-53
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| PRK13351 | PRK13351 | elongation factor G-like protein; |
1-476 | 1.56e-51 | ||||||||||
elongation factor G-like protein; Pssm-ID: 237358 [Multi-domain] Cd Length: 687 Bit Score: 188.24 E-value: 1.56e-51
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| FusA | COG0480 | Translation elongation factor EF-G, a GTPase [Translation, ribosomal structure and biogenesis]; ... |
2-372 | 2.50e-49 | ||||||||||
Translation elongation factor EF-G, a GTPase [Translation, ribosomal structure and biogenesis]; Translation elongation factor EF-G, a GTPase is part of the Pathway/BioSystem: Translation factors Pssm-ID: 440248 [Multi-domain] Cd Length: 693 Bit Score: 182.17 E-value: 2.50e-49
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| PRK10218 | PRK10218 | translational GTPase TypA; |
1-476 | 1.31e-48 | ||||||||||
translational GTPase TypA; Pssm-ID: 104396 [Multi-domain] Cd Length: 607 Bit Score: 178.75 E-value: 1.31e-48
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| GTP_translation_factor | cd00881 | GTP translation factor family primarily contains translation initiation, elongation and ... |
6-183 | 6.56e-48 | ||||||||||
GTP translation factor family primarily contains translation initiation, elongation and release factors; The GTP translation factor family consists primarily of translation initiation, elongation, and release factors, which play specific roles in protein translation. In addition, the family includes Snu114p, a component of the U5 small nuclear riboprotein particle which is a component of the spliceosome and is involved in excision of introns, TetM, a tetracycline resistance gene that protects the ribosome from tetracycline binding, and the unusual subfamily CysN/ATPS, which has an unrelated function (ATP sulfurylase) acquired through lateral transfer of the EF1-alpha gene and development of a new function. Pssm-ID: 206647 [Multi-domain] Cd Length: 183 Bit Score: 165.55 E-value: 6.56e-48
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| EF4_III | cd16260 | Domain III of Elongation Factor 4 (EF4); Elongation factor 4 (EF4 or LepA) is a highly ... |
293-368 | 3.17e-47 | ||||||||||
Domain III of Elongation Factor 4 (EF4); Elongation factor 4 (EF4 or LepA) is a highly conserved guanosine triphosphatase found in bacteria and eukaryotic mitochondria and chloroplasts. EF4 functions as a translation factor, which promotes back-translocation of tRNAs on posttranslocational ribosome complexes and competes with elongation factor G for interaction with pretranslocational ribosomes, inhibiting the elongation phase of protein synthesis. Pssm-ID: 293917 [Multi-domain] Cd Length: 76 Bit Score: 159.59 E-value: 3.17e-47
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| TypA_BipA | cd01891 | Tyrosine phosphorylated protein A (TypA)/BipA family belongs to ribosome-binding GTPases; BipA ... |
4-183 | 2.28e-46 | ||||||||||
Tyrosine phosphorylated protein A (TypA)/BipA family belongs to ribosome-binding GTPases; BipA is a protein belonging to the ribosome-binding family of GTPases and is widely distributed in bacteria and plants. BipA was originally described as a protein that is induced in Salmonella typhimurium after exposure to bactericidal/permeability-inducing protein (a cationic antimicrobial protein produced by neutrophils), and has since been identified in E. coli as well. The properties thus far described for BipA are related to its role in the process of pathogenesis by enteropathogenic E. coli. It appears to be involved in the regulation of several processes important for infection, including rearrangements of the cytoskeleton of the host, bacterial resistance to host defense peptides, flagellum-mediated cell motility, and expression of K5 capsular genes. It has been proposed that BipA may utilize a novel mechanism to regulate the expression of target genes. In addition, BipA from enteropathogenic E. coli has been shown to be phosphorylated on a tyrosine residue, while BipA from Salmonella and from E. coli K12 strains is not phosphorylated under the conditions assayed. The phosphorylation apparently modifies the rate of nucleotide hydrolysis, with the phosphorylated form showing greatly increased GTPase activity. Pssm-ID: 206678 [Multi-domain] Cd Length: 194 Bit Score: 161.61 E-value: 2.28e-46
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| PRK07560 | PRK07560 | elongation factor EF-2; Reviewed |
2-372 | 9.13e-45 | ||||||||||
elongation factor EF-2; Reviewed Pssm-ID: 236047 [Multi-domain] Cd Length: 731 Bit Score: 169.66 E-value: 9.13e-45
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| EF2 | cd01885 | Elongation Factor 2 (EF2) in archaea and eukarya; Translocation requires hydrolysis of a ... |
5-151 | 3.92e-43 | ||||||||||
Elongation Factor 2 (EF2) in archaea and eukarya; Translocation requires hydrolysis of a molecule of GTP and is mediated by EF-G in bacteria and by eEF2 in eukaryotes. The eukaryotic elongation factor eEF2 is a GTPase involved in the translocation of the peptidyl-tRNA from the A site to the P site on the ribosome. The 95-kDa protein is highly conserved, with 60% amino acid sequence identity between the human and yeast proteins. Two major mechanisms are known to regulate protein elongation and both involve eEF2. First, eEF2 can be modulated by reversible phosphorylation. Increased levels of phosphorylated eEF2 reduce elongation rates presumably because phosphorylated eEF2 fails to bind the ribosomes. Treatment of mammalian cells with agents that raise the cytoplasmic Ca2+ and cAMP levels reduce elongation rates by activating the kinase responsible for phosphorylating eEF2. In contrast, treatment of cells with insulin increases elongation rates by promoting eEF2 dephosphorylation. Second, the protein can be post-translationally modified by ADP-ribosylation. Various bacterial toxins perform this reaction after modification of a specific histidine residue to diphthamide, but there is evidence for endogenous ADP ribosylase activity. Similar to the bacterial toxins, it is presumed that modification by the endogenous enzyme also inhibits eEF2 activity. Pssm-ID: 206672 [Multi-domain] Cd Length: 218 Bit Score: 153.93 E-value: 3.92e-43
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| PRK12740 | PRK12740 | elongation factor G-like protein EF-G2; |
10-372 | 1.16e-42 | ||||||||||
elongation factor G-like protein EF-G2; Pssm-ID: 237186 [Multi-domain] Cd Length: 668 Bit Score: 162.60 E-value: 1.16e-42
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| EF4_II | cd03699 | Domain II of Elongation Factor 4 (EF4); Elongation factor 4 (EF4 or LepA) is a highly ... |
191-276 | 3.16e-39 | ||||||||||
Domain II of Elongation Factor 4 (EF4); Elongation factor 4 (EF4 or LepA) is a highly conserved guanosine triphosphatase found in bacteria and eukaryotic mitochondria and chloroplasts. EF4 functions as a translation factor, which promotes back-translocation of tRNAs on posttranslocational ribosome complexes and competes with elongation factor G for interaction with pretranslocational ribosomes, inhibiting the elongation phase of protein synthesis. Pssm-ID: 293900 [Multi-domain] Cd Length: 86 Bit Score: 138.32 E-value: 3.16e-39
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| aEF-2 | TIGR00490 | translation elongation factor aEF-2; This model represents archaeal elongation factor 2, a ... |
2-389 | 4.00e-38 | ||||||||||
translation elongation factor aEF-2; This model represents archaeal elongation factor 2, a protein more similar to eukaryotic EF-2 than to bacterial EF-G, both in sequence similarity and in sharing with eukaryotes the property of having a diphthamide (modified His) residue at a conserved position. The diphthamide can be ADP-ribosylated by diphtheria toxin in the presence of NAD. [Protein synthesis, Translation factors] Pssm-ID: 129581 [Multi-domain] Cd Length: 720 Bit Score: 150.05 E-value: 4.00e-38
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| EF-G | TIGR00484 | translation elongation factor EF-G; After peptide bond formation, this elongation factor of ... |
1-381 | 1.42e-36 | ||||||||||
translation elongation factor EF-G; After peptide bond formation, this elongation factor of bacteria and organelles catalyzes the translocation of the tRNA-mRNA complex, with its attached nascent polypeptide chain, from the A-site to the P-site of the ribosome. Every completed bacterial genome has at least one copy, but some species have additional EF-G-like proteins. The closest homolog to canonical (e.g. E. coli) EF-G in the spirochetes clusters as if it is derived from mitochondrial forms, while a more distant second copy is also present. Synechocystis PCC6803 has a few proteins more closely related to EF-G than to any other characterized protein. Two of these resemble E. coli EF-G more closely than does the best match from the spirochetes; it may be that both function as authentic EF-G. [Protein synthesis, Translation factors] Pssm-ID: 129575 [Multi-domain] Cd Length: 689 Bit Score: 145.34 E-value: 1.42e-36
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| lepA_C | cd03709 | lepA_C: This family represents the C-terminal region of LepA, a GTP-binding protein localized ... |
401-478 | 1.89e-36 | ||||||||||
lepA_C: This family represents the C-terminal region of LepA, a GTP-binding protein localized in the cytoplasmic membrane. LepA is ubiquitous in Bacteria and Eukaryota (e.g. Saccharomyces cerevisiae GUF1p), but is missing from Archaea. LepA exhibits significant homology to elongation factors (EFs) Tu and G. The function(s) of the proteins in this family are unknown. The N-terminal domain of LepA is homologous to a domain of similar size found in initiation factor 2 (IF2), and in EF-Tu and EF-G (factors required for translation in Escherichia coli). Two types of phylogenetic tree, rooted by other GTP-binding proteins, suggest that eukaryotic homologs (including S. cerevisiae GUF1) originated within the bacterial LepA family. LepA has never been observed in archaea, and eukaryl LepA is organellar. LepA is therefore a true bacterial GTPase, found only in the bacterial lineage. Pssm-ID: 239680 [Multi-domain] Cd Length: 80 Bit Score: 130.69 E-value: 1.89e-36
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| EF-G | cd01886 | Elongation factor G (EF-G) family involved in both the elongation and ribosome recycling ... |
6-156 | 3.28e-31 | ||||||||||
Elongation factor G (EF-G) family involved in both the elongation and ribosome recycling phases of protein synthesis; Translocation is mediated by EF-G (also called translocase). The structure of EF-G closely resembles that of the complex between EF-Tu and tRNA. This is an example of molecular mimicry; a protein domain evolved so that it mimics the shape of a tRNA molecule. EF-G in the GTP form binds to the ribosome, primarily through the interaction of its EF-Tu-like domain with the 50S subunit. The binding of EF-G to the ribosome in this manner stimulates the GTPase activity of EF-G. On GTP hydrolysis, EF-G undergoes a conformational change that forces its arm deeper into the A site on the 30S subunit. To accommodate this domain, the peptidyl-tRNA in the A site moves to the P site, carrying the mRNA and the deacylated tRNA with it. The ribosome may be prepared for these rearrangements by the initial binding of EF-G as well. The dissociation of EF-G leaves the ribosome ready to accept the next aminoacyl-tRNA into the A site. This group contains both eukaryotic and bacterial members. Pssm-ID: 206673 [Multi-domain] Cd Length: 270 Bit Score: 122.60 E-value: 3.28e-31
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| PTZ00416 | PTZ00416 | elongation factor 2; Provisional |
2-147 | 2.87e-30 | ||||||||||
elongation factor 2; Provisional Pssm-ID: 240409 [Multi-domain] Cd Length: 836 Bit Score: 126.70 E-value: 2.87e-30
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| TetM_like | cd04168 | Tet(M)-like family includes Tet(M), Tet(O), Tet(W), and OtrA, containing tetracycline ... |
6-179 | 1.77e-28 | ||||||||||
Tet(M)-like family includes Tet(M), Tet(O), Tet(W), and OtrA, containing tetracycline resistant proteins; Tet(M), Tet(O), Tet(W), and OtrA are tetracycline resistance genes found in Gram-positive and Gram-negative bacteria. Tetracyclines inhibit protein synthesis by preventing aminoacyl-tRNA from binding to the ribosomal acceptor site. This subfamily contains tetracycline resistance proteins that function through ribosomal protection and are typically found on mobile genetic elements, such as transposons or plasmids, and are often conjugative. Ribosomal protection proteins are homologous to the elongation factors EF-Tu and EF-G. EF-G and Tet(M) compete for binding on the ribosomes. Tet(M) has a higher affinity than EF-G, suggesting these two proteins may have overlapping binding sites and that Tet(M) must be released before EF-G can bind. Tet(M) and Tet(O) have been shown to have ribosome-dependent GTPase activity. These proteins are part of the GTP translation factor family, which includes EF-G, EF-Tu, EF2, LepA, and SelB. Pssm-ID: 206731 [Multi-domain] Cd Length: 237 Bit Score: 113.87 E-value: 1.77e-28
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| PLN00116 | PLN00116 | translation elongation factor EF-2 subunit; Provisional |
1-134 | 1.42e-27 | ||||||||||
translation elongation factor EF-2 subunit; Provisional Pssm-ID: 177730 [Multi-domain] Cd Length: 843 Bit Score: 118.29 E-value: 1.42e-27
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| Snu114p | cd04167 | Snu114p, a spliceosome protein, is a GTPase; Snu114p subfamily. Snu114p is one of several ... |
5-134 | 3.34e-27 | ||||||||||
Snu114p, a spliceosome protein, is a GTPase; Snu114p subfamily. Snu114p is one of several proteins that make up the U5 small nuclear ribonucleoprotein (snRNP) particle. U5 is a component of the spliceosome, which catalyzes the splicing of pre-mRNA to remove introns. Snu114p is homologous to EF-2, but typically contains an additional N-terminal domain not found in Ef-2. This protein is part of the GTP translation factor family and the Ras superfamily, characterized by five G-box motifs. Pssm-ID: 206730 [Multi-domain] Cd Length: 213 Bit Score: 109.28 E-value: 3.34e-27
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| RF3 | cd04169 | Release Factor 3 (RF3) protein involved in the terminal step of translocation in bacteria; ... |
5-154 | 1.16e-26 | ||||||||||
Release Factor 3 (RF3) protein involved in the terminal step of translocation in bacteria; Peptide chain release factor 3 (RF3) is a protein involved in the termination step of translation in bacteria. Termination occurs when class I release factors (RF1 or RF2) recognize the stop codon at the A-site of the ribosome and activate the release of the nascent polypeptide. The class II release factor RF3 then initiates the release of the class I RF from the ribosome. RF3 binds to the RF/ribosome complex in the inactive (GDP-bound) state. GDP/GTP exchange occurs, followed by the release of the class I RF. Subsequent hydrolysis of GTP to GDP triggers the release of RF3 from the ribosome. RF3 also enhances the efficiency of class I RFs at less preferred stop codons and at stop codons in weak contexts. Pssm-ID: 206732 [Multi-domain] Cd Length: 268 Bit Score: 109.61 E-value: 1.16e-26
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| infB | CHL00189 | translation initiation factor 2; Provisional |
8-233 | 2.54e-22 | ||||||||||
translation initiation factor 2; Provisional Pssm-ID: 177089 [Multi-domain] Cd Length: 742 Bit Score: 101.45 E-value: 2.54e-22
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| prfC | PRK00741 | peptide chain release factor 3; Provisional |
5-155 | 1.94e-21 | ||||||||||
peptide chain release factor 3; Provisional Pssm-ID: 179105 [Multi-domain] Cd Length: 526 Bit Score: 97.90 E-value: 1.94e-21
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| TEF1 | COG5256 | Translation elongation factor EF-1alpha (GTPase) [Translation, ribosomal structure and ... |
3-229 | 7.19e-21 | ||||||||||
Translation elongation factor EF-1alpha (GTPase) [Translation, ribosomal structure and biogenesis]; Translation elongation factor EF-1alpha (GTPase) is part of the Pathway/BioSystem: Translation factors Pssm-ID: 444074 [Multi-domain] Cd Length: 423 Bit Score: 95.39 E-value: 7.19e-21
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| IF-2 | TIGR00487 | translation initiation factor IF-2; This model discriminates eubacterial (and mitochondrial) ... |
8-223 | 9.12e-21 | ||||||||||
translation initiation factor IF-2; This model discriminates eubacterial (and mitochondrial) translation initiation factor 2 (IF-2), encoded by the infB gene in bacteria, from similar proteins in the Archaea and Eukaryotes. In the bacteria and in organelles, the initiator tRNA is charged with N-formyl-Met instead of Met. This translation factor acts in delivering the initator tRNA to the ribosome. It is one of a number of GTP-binding translation factors recognized by the pfam model GTP_EFTU. [Protein synthesis, Translation factors] Pssm-ID: 273102 [Multi-domain] Cd Length: 587 Bit Score: 96.38 E-value: 9.12e-21
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| PRK12317 | PRK12317 | elongation factor 1-alpha; Reviewed |
3-229 | 4.72e-20 | ||||||||||
elongation factor 1-alpha; Reviewed Pssm-ID: 237055 [Multi-domain] Cd Length: 425 Bit Score: 93.07 E-value: 4.72e-20
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| Elongation_Factor_C | cd01514 | Elongation factor G C-terminus. This domain includes the carboxyl terminal regions of ... |
401-478 | 9.00e-20 | ||||||||||
Elongation factor G C-terminus. This domain includes the carboxyl terminal regions of elongation factors (EFs) bacterial EF-G, eukaryotic and archeal EF-2 and eukaryotic mitochondrial mtEFG1s and mtEFG2s. This group also includes proteins similar to the ribosomal protection proteins Tet(M) and Tet(O), BipA, LepA and, spliceosomal proteins: human 116kD U5 small nuclear ribonucleoprotein (snRNP) protein (U5-116 kD) and yeast counterpart Snu114p. This domain adopts a ferredoxin-like fold consisting of an alpha-beta sandwich with anti-parallel beta-sheets, resembling the topology of domain III found in the elongation factors EF-G and eukaryotic EF-2, with which it forms the C-terminal block. The two domains however are not superimposable and domain III lacks some of the characteristics of this domain. EF-2/EF-G in complex with GTP, promotes the translocation step of translation. During translocation the peptidyl-tRNA is moved from the A site to the P site, the uncharged tRNA from the P site to the E-site and, the mRNA is shifted one codon relative to the ribosome. Tet(M) and Tet(O) mediate Tc resistance. Typical Tcs bind to the ribosome and inhibit the elongation phase of protein synthesis, by inhibiting the occupation of site A by aminoacyl-tRNA. Tet(M) and Tet(O) catalyze the release of tetracycline (Tc) from the ribosome in a GTP-dependent manner. BipA is a highly conserved protein with global regulatory properties in Escherichia coli. Yeast Snu114p is essential for cell viability and for splicing in vivo. Experiments suggest that GTP binding and probably GTP hydrolysis is important for the function of the U5-116 kD/Snu114p. The function of LepA proteins is unknown. Pssm-ID: 238772 [Multi-domain] Cd Length: 79 Bit Score: 83.69 E-value: 9.00e-20
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| IF2_eIF5B | cd01887 | Initiation Factor 2 (IF2)/ eukaryotic Initiation Factor 5B (eIF5B) family; IF2/eIF5B ... |
9-177 | 2.21e-19 | ||||||||||
Initiation Factor 2 (IF2)/ eukaryotic Initiation Factor 5B (eIF5B) family; IF2/eIF5B contribute to ribosomal subunit joining and function as GTPases that are maximally activated by the presence of both ribosomal subunits. As seen in other GTPases, IF2/IF5B undergoes conformational changes between its GTP- and GDP-bound states. Eukaryotic IF2/eIF5Bs possess three characteristic segments, including a divergent N-terminal region followed by conserved central and C-terminal segments. This core region is conserved among all known eukaryotic and archaeal IF2/eIF5Bs and eubacterial IF2s. Pssm-ID: 206674 [Multi-domain] Cd Length: 169 Bit Score: 85.60 E-value: 2.21e-19
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| EFG_C | pfam00679 | Elongation factor G C-terminus; This domain includes the carboxyl terminal regions of ... |
398-476 | 8.35e-18 | ||||||||||
Elongation factor G C-terminus; This domain includes the carboxyl terminal regions of Elongation factor G, elongation factor 2 and some tetracycline resistance proteins and adopt a ferredoxin-like fold. Pssm-ID: 425814 [Multi-domain] Cd Length: 88 Bit Score: 78.36 E-value: 8.35e-18
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| SelB | COG3276 | Selenocysteine-specific translation elongation factor SelB [Translation, ribosomal structure ... |
9-186 | 1.97e-17 | ||||||||||
Selenocysteine-specific translation elongation factor SelB [Translation, ribosomal structure and biogenesis]; Selenocysteine-specific translation elongation factor SelB is part of the Pathway/BioSystem: Translation factors Pssm-ID: 442507 [Multi-domain] Cd Length: 630 Bit Score: 85.74 E-value: 1.97e-17
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| EF-G_bact | cd04170 | Elongation factor G (EF-G) family; Translocation is mediated by EF-G (also called translocase). ... |
6-153 | 1.22e-16 | ||||||||||
Elongation factor G (EF-G) family; Translocation is mediated by EF-G (also called translocase). The structure of EF-G closely resembles that of the complex between EF-Tu and tRNA. This is an example of molecular mimicry; a protein domain evolved so that it mimics the shape of a tRNA molecule. EF-G in the GTP form binds to the ribosome, primarily through the interaction of its EF-Tu-like domain with the 50S subunit. The binding of EF-G to the ribosome in this manner stimulates the GTPase activity of EF-G. On GTP hydrolysis, EF-G undergoes a conformational change that forces its arm deeper into the A site on the 30S subunit. To accommodate this domain, the peptidyl-tRNA in the A site moves to the P site, carrying the mRNA and the deacylated tRNA with it. The ribosome may be prepared for these rearrangements by the initial binding of EF-G as well. The dissociation of EF-G leaves the ribosome ready to accept the next aminoacyl-tRNA into the A site. This group contains only bacterial members. Pssm-ID: 206733 [Multi-domain] Cd Length: 268 Bit Score: 80.33 E-value: 1.22e-16
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| InfB | COG0532 | Translation initiation factor IF-2, a GTPase [Translation, ribosomal structure and biogenesis]; ... |
12-233 | 1.28e-16 | ||||||||||
Translation initiation factor IF-2, a GTPase [Translation, ribosomal structure and biogenesis]; Translation initiation factor IF-2, a GTPase is part of the Pathway/BioSystem: Translation factors Pssm-ID: 440298 [Multi-domain] Cd Length: 502 Bit Score: 82.75 E-value: 1.28e-16
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| Ras_like_GTPase | cd00882 | Rat sarcoma (Ras)-like superfamily of small guanosine triphosphatases (GTPases); Ras-like ... |
16-178 | 2.90e-16 | ||||||||||
Rat sarcoma (Ras)-like superfamily of small guanosine triphosphatases (GTPases); Ras-like GTPase superfamily. The Ras-like superfamily of small GTPases consists of several families with an extremely high degree of structural and functional similarity. The Ras superfamily is divided into at least four families in eukaryotes: the Ras, Rho, Rab, and Sar1/Arf families. This superfamily also includes proteins like the GTP translation factors, Era-like GTPases, and G-alpha chain of the heterotrimeric G proteins. Members of the Ras superfamily regulate a wide variety of cellular functions: the Ras family regulates gene expression, the Rho family regulates cytoskeletal reorganization and gene expression, the Rab and Sar1/Arf families regulate vesicle trafficking, and the Ran family regulates nucleocytoplasmic transport and microtubule organization. The GTP translation factor family regulates initiation, elongation, termination, and release in translation, and the Era-like GTPase family regulates cell division, sporulation, and DNA replication. Members of the Ras superfamily are identified by the GTP binding site, which is made up of five characteristic sequence motifs, and the switch I and switch II regions. Pssm-ID: 206648 [Multi-domain] Cd Length: 161 Bit Score: 76.34 E-value: 2.90e-16
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| PLN03126 | PLN03126 | Elongation factor Tu; Provisional |
6-296 | 7.98e-16 | ||||||||||
Elongation factor Tu; Provisional Pssm-ID: 215592 [Multi-domain] Cd Length: 478 Bit Score: 80.43 E-value: 7.98e-16
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| SelB | cd04171 | SelB, the dedicated elongation factor for delivery of selenocysteinyl-tRNA to the ribosome; ... |
12-176 | 1.64e-15 | ||||||||||
SelB, the dedicated elongation factor for delivery of selenocysteinyl-tRNA to the ribosome; SelB is an elongation factor needed for the co-translational incorporation of selenocysteine. Selenocysteine is coded by a UGA stop codon in combination with a specific downstream mRNA hairpin. In bacteria, the C-terminal part of SelB recognizes this hairpin, while the N-terminal part binds GTP and tRNA in analogy with elongation factor Tu (EF-Tu). It specifically recognizes the selenocysteine charged tRNAsec, which has a UCA anticodon, in an EF-Tu like manner. This allows insertion of selenocysteine at in-frame UGA stop codons. In E. coli SelB binds GTP, selenocysteyl-tRNAsec, and a stem-loop structure immediately downstream of the UGA codon (the SECIS sequence). The absence of active SelB prevents the participation of selenocysteyl-tRNAsec in translation. Archaeal and animal mechanisms of selenocysteine incorporation are more complex. Although the SECIS elements have different secondary structures and conserved elements between archaea and eukaryotes, they do share a common feature. Unlike in E. coli, these SECIS elements are located in the 3' UTRs. This group contains bacterial SelBs, as well as, one from archaea. Pssm-ID: 206734 [Multi-domain] Cd Length: 170 Bit Score: 74.56 E-value: 1.64e-15
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| EF-Tu | TIGR00485 | translation elongation factor TU; This model models orthologs of translation elongation factor ... |
6-226 | 2.06e-15 | ||||||||||
translation elongation factor TU; This model models orthologs of translation elongation factor EF-Tu in bacteria, mitochondria, and chloroplasts, one of several GTP-binding translation factors found by the more general pfam model GTP_EFTU. The eukaryotic conterpart, eukaryotic translation elongation factor 1 (eEF-1 alpha), is excluded from this model. EF-Tu is one of the most abundant proteins in bacteria, as well as one of the most highly conserved, and in a number of species the gene is duplicated with identical function. When bound to GTP, EF-Tu can form a complex with any (correctly) aminoacylated tRNA except those for initiation and for selenocysteine, in which case EF-Tu is replaced by other factors. Transfer RNA is carried to the ribosome in these complexes for protein translation. [Protein synthesis, Translation factors] Pssm-ID: 129576 [Multi-domain] Cd Length: 394 Bit Score: 78.28 E-value: 2.06e-15
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| EFG_III-like | cd16257 | Domain III of Elongation factor G (EF-G) and related proteins; Bacterial Elongation factor G ... |
293-364 | 2.52e-15 | ||||||||||
Domain III of Elongation factor G (EF-G) and related proteins; Bacterial Elongation factor G (EF-G) and related proteins play a role in translation and share a similar domain architecture. Elongation factor EFG participates in the elongation phase during protein biosynthesis on the ribosome by stimulating translocation. Its functional cycles depend on GTP binding and its hydrolysis. Domain III is involved in the activation of GTP hydrolysis. This domain III, which is different from domain III in EF-TU and related elongation factors, is found in several translation factors, like bacterial release factors RF3, elongation factor 4, elongation factor 2, GTP-binding protein BipA and tetracycline resistance protein Tet. Pssm-ID: 293914 [Multi-domain] Cd Length: 71 Bit Score: 70.84 E-value: 2.52e-15
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| EF1_alpha | cd01883 | Elongation Factor 1-alpha (EF1-alpha) protein family; EF1 is responsible for the GTP-dependent ... |
6-107 | 1.27e-14 | ||||||||||
Elongation Factor 1-alpha (EF1-alpha) protein family; EF1 is responsible for the GTP-dependent binding of aminoacyl-tRNAs to the ribosomes. EF1 is composed of four subunits: the alpha chain which binds GTP and aminoacyl-tRNAs, the gamma chain that probably plays a role in anchoring the complex to other cellular components and the beta and delta (or beta') chains. This subfamily is the alpha subunit, and represents the counterpart of bacterial EF-Tu for the archaea (aEF1-alpha) and eukaryotes (eEF1-alpha). eEF1-alpha interacts with the actin of the eukaryotic cytoskeleton and may thereby play a role in cellular transformation and apoptosis. EF-Tu can have no such role in bacteria. In humans, the isoform eEF1A2 is overexpressed in 2/3 of breast cancers and has been identified as a putative oncogene. This subfamily also includes Hbs1, a G protein known to be important for efficient growth and protein synthesis under conditions of limiting translation initiation in yeast, and to associate with Dom34. It has been speculated that yeast Hbs1 and Dom34 proteins may function as part of a complex with a role in gene expression. Pssm-ID: 206670 [Multi-domain] Cd Length: 219 Bit Score: 73.29 E-value: 1.27e-14
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| Gem1 | COG1100 | GTPase SAR1 family domain [General function prediction only]; |
16-180 | 1.65e-14 | ||||||||||
GTPase SAR1 family domain [General function prediction only]; Pssm-ID: 440717 [Multi-domain] Cd Length: 177 Bit Score: 71.94 E-value: 1.65e-14
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| PTZ00141 | PTZ00141 | elongation factor 1- alpha; Provisional |
2-231 | 3.00e-14 | ||||||||||
elongation factor 1- alpha; Provisional Pssm-ID: 185474 [Multi-domain] Cd Length: 446 Bit Score: 75.17 E-value: 3.00e-14
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| selB | TIGR00475 | selenocysteine-specific elongation factor SelB; In prokaryotes, the incorporation of ... |
6-230 | 4.39e-14 | ||||||||||
selenocysteine-specific elongation factor SelB; In prokaryotes, the incorporation of selenocysteine as the 21st amino acid, encoded by TGA, requires several elements: SelC is the tRNA itself, SelD acts as a donor of reduced selenium, SelA modifies a serine residue on SelC into selenocysteine, and SelB is a selenocysteine-specific translation elongation factor. 3-prime or 5-prime non-coding elements of mRNA have been found as probable structures for directing selenocysteine incorporation. This model describes the elongation factor SelB, a close homolog rf EF-Tu. It may function by replacing EF-Tu. A C-terminal domain not found in EF-Tu is in all SelB sequences in the seed alignment except that from Methanococcus jannaschii. This model does not find an equivalent protein for eukaryotes. [Protein synthesis, Translation factors] Pssm-ID: 129567 [Multi-domain] Cd Length: 581 Bit Score: 75.29 E-value: 4.39e-14
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| PLN03127 | PLN03127 | Elongation factor Tu; Provisional |
6-297 | 5.18e-14 | ||||||||||
Elongation factor Tu; Provisional Pssm-ID: 178673 [Multi-domain] Cd Length: 447 Bit Score: 74.48 E-value: 5.18e-14
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| small_GTP | TIGR00231 | small GTP-binding protein domain; Proteins with a small GTP-binding domain recognized by this ... |
9-178 | 7.77e-14 | ||||||||||
small GTP-binding protein domain; Proteins with a small GTP-binding domain recognized by this model include Ras, RhoA, Rab11, translation elongation factor G, translation initiation factor IF-2, tetratcycline resistance protein TetM, CDC42, Era, ADP-ribosylation factors, tdhF, and many others. In some proteins the domain occurs more than once.This model recognizes a large number of small GTP-binding proteins and related domains in larger proteins. Note that the alpha chains of heterotrimeric G proteins are larger proteins in which the NKXD motif is separated from the GxxxxGK[ST] motif (P-loop) by a long insert and are not easily detected by this model. [Unknown function, General] Pssm-ID: 272973 [Multi-domain] Cd Length: 162 Bit Score: 69.32 E-value: 7.77e-14
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| PRK12736 | PRK12736 | elongation factor Tu; Reviewed |
6-231 | 5.74e-13 | ||||||||||
elongation factor Tu; Reviewed Pssm-ID: 237184 [Multi-domain] Cd Length: 394 Bit Score: 70.74 E-value: 5.74e-13
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| Era_like | cd00880 | E. coli Ras-like protein (Era)-like GTPase; The Era (E. coli Ras-like protein)-like family ... |
16-178 | 1.67e-12 | ||||||||||
E. coli Ras-like protein (Era)-like GTPase; The Era (E. coli Ras-like protein)-like family includes several distinct subfamilies (TrmE/ThdF, FeoB, YihA (EngB), Era, and EngA/YfgK) that generally show sequence conservation in the region between the Walker A and B motifs (G1 and G3 box motifs), to the exclusion of other GTPases. TrmE is ubiquitous in bacteria and is a widespread mitochondrial protein in eukaryotes, but is absent from archaea. The yeast member of TrmE family, MSS1, is involved in mitochondrial translation; bacterial members are often present in translation-related operons. FeoB represents an unusual adaptation of GTPases for high-affinity iron (II) transport. YihA (EngB) family of GTPases is typified by the E. coli YihA, which is an essential protein involved in cell division control. Era is characterized by a distinct derivative of the KH domain (the pseudo-KH domain) which is located C-terminal to the GTPase domain. EngA and its orthologs are composed of two GTPase domains and, since the sequences of the two domains are more similar to each other than to other GTPases, it is likely that an ancient gene duplication, rather than a fusion of evolutionarily distinct GTPases, gave rise to this family. Pssm-ID: 206646 [Multi-domain] Cd Length: 161 Bit Score: 65.73 E-value: 1.67e-12
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| SelB_euk | cd01889 | SelB, the dedicated elongation factor for delivery of selenocysteinyl-tRNA to the ribosome; ... |
6-184 | 1.15e-11 | ||||||||||
SelB, the dedicated elongation factor for delivery of selenocysteinyl-tRNA to the ribosome; SelB is an elongation factor needed for the co-translational incorporation of selenocysteine. Selenocysteine is coded by a UGA stop codon in combination with a specific downstream mRNA hairpin. In bacteria, the C-terminal part of SelB recognizes this hairpin, while the N-terminal part binds GTP and tRNA in analogy with elongation factor Tu (EF-Tu). It specifically recognizes the selenocysteine charged tRNAsec, which has a UCA anticodon, in an EF-Tu like manner. This allows insertion of selenocysteine at in-frame UGA stop codons. In E. coli SelB binds GTP, selenocysteyl-tRNAsec and a stem-loop structure immediately downstream of the UGA codon (the SECIS sequence). The absence of active SelB prevents the participation of selenocysteyl-tRNAsec in translation. Archaeal and animal mechanisms of selenocysteine incorporation are more complex. Although the SECIS elements have different secondary structures and conserved elements between archaea and eukaryotes, they do share a common feature. Unlike in E. coli, these SECIS elements are located in the 3' UTRs. This group contains eukaryotic SelBs and some from archaea. Pssm-ID: 206676 [Multi-domain] Cd Length: 192 Bit Score: 63.92 E-value: 1.15e-11
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| tufA | CHL00071 | elongation factor Tu |
3-231 | 1.22e-11 | ||||||||||
elongation factor Tu Pssm-ID: 177010 [Multi-domain] Cd Length: 409 Bit Score: 66.90 E-value: 1.22e-11
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| CysN_ATPS | cd04166 | CysN, together with protein CysD, forms the ATP sulfurylase (ATPS) complex; CysN_ATPS ... |
6-135 | 9.26e-11 | ||||||||||
CysN, together with protein CysD, forms the ATP sulfurylase (ATPS) complex; CysN_ATPS subfamily. CysN, together with protein CysD, form the ATP sulfurylase (ATPS) complex in some bacteria and lower eukaryotes. ATPS catalyzes the production of ATP sulfurylase (APS) and pyrophosphate (PPi) from ATP and sulfate. CysD, which catalyzes ATP hydrolysis, is a member of the ATP pyrophosphatase (ATP PPase) family. CysN hydrolysis of GTP is required for CysD hydrolysis of ATP; however, CysN hydrolysis of GTP is not dependent on CysD hydrolysis of ATP. CysN is an example of lateral gene transfer followed by acquisition of new function. In many organisms, an ATPS exists which is not GTP-dependent and shares no sequence or structural similarity to CysN. Pssm-ID: 206729 [Multi-domain] Cd Length: 209 Bit Score: 61.82 E-value: 9.26e-11
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| PRK04000 | PRK04000 | translation initiation factor IF-2 subunit gamma; Validated |
6-231 | 1.07e-10 | ||||||||||
translation initiation factor IF-2 subunit gamma; Validated Pssm-ID: 235194 [Multi-domain] Cd Length: 411 Bit Score: 63.72 E-value: 1.07e-10
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| PLN00043 | PLN00043 | elongation factor 1-alpha; Provisional |
3-231 | 3.67e-10 | ||||||||||
elongation factor 1-alpha; Provisional Pssm-ID: 165621 [Multi-domain] Cd Length: 447 Bit Score: 62.41 E-value: 3.67e-10
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| PRK10512 | PRK10512 | selenocysteinyl-tRNA-specific translation factor; Provisional |
9-171 | 1.03e-09 | ||||||||||
selenocysteinyl-tRNA-specific translation factor; Provisional Pssm-ID: 182508 [Multi-domain] Cd Length: 614 Bit Score: 61.22 E-value: 1.03e-09
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| era | PRK00089 | GTPase Era; Reviewed |
69-181 | 4.02e-09 | ||||||||||
GTPase Era; Reviewed Pssm-ID: 234624 [Multi-domain] Cd Length: 292 Bit Score: 58.14 E-value: 4.02e-09
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| TufA | COG0050 | Translation elongation factor EF-Tu, a GTPase [Translation, ribosomal structure and biogenesis] ... |
3-190 | 4.22e-09 | ||||||||||
Translation elongation factor EF-Tu, a GTPase [Translation, ribosomal structure and biogenesis]; Translation elongation factor EF-Tu, a GTPase is part of the Pathway/BioSystem: Translation factors Pssm-ID: 439820 [Multi-domain] Cd Length: 396 Bit Score: 58.62 E-value: 4.22e-09
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| Era | COG1159 | GTPase Era, involved in 16S rRNA processing [Translation, ribosomal structure and biogenesis]; |
68-181 | 4.60e-09 | ||||||||||
GTPase Era, involved in 16S rRNA processing [Translation, ribosomal structure and biogenesis]; Pssm-ID: 440773 [Multi-domain] Cd Length: 290 Bit Score: 57.69 E-value: 4.60e-09
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| PTZ00327 | PTZ00327 | eukaryotic translation initiation factor 2 gamma subunit; Provisional |
6-225 | 4.82e-09 | ||||||||||
eukaryotic translation initiation factor 2 gamma subunit; Provisional Pssm-ID: 240362 [Multi-domain] Cd Length: 460 Bit Score: 58.86 E-value: 4.82e-09
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| PRK00049 | PRK00049 | elongation factor Tu; Reviewed |
3-223 | 4.86e-09 | ||||||||||
elongation factor Tu; Reviewed Pssm-ID: 234596 [Multi-domain] Cd Length: 396 Bit Score: 58.66 E-value: 4.86e-09
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| PRK12735 | PRK12735 | elongation factor Tu; Reviewed |
6-231 | 9.36e-09 | ||||||||||
elongation factor Tu; Reviewed Pssm-ID: 183708 [Multi-domain] Cd Length: 396 Bit Score: 57.54 E-value: 9.36e-09
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| EngA2 | cd01895 | EngA2 GTPase contains the second domain of EngA; This EngA2 subfamily CD represents the second ... |
16-176 | 1.56e-08 | ||||||||||
EngA2 GTPase contains the second domain of EngA; This EngA2 subfamily CD represents the second GTPase domain of EngA and its orthologs, which are composed of two adjacent GTPase domains. Since the sequences of the two domains are more similar to each other than to other GTPases, it is likely that an ancient gene duplication, rather than a fusion of evolutionarily distinct GTPases, gave rise to this family. Although the exact function of these proteins has not been elucidated, studies have revealed that the E. coli EngA homolog, Der, and Neisseria gonorrhoeae EngA are essential for cell viability. A recent report suggests that E. coli Der functions in ribosome assembly and stability. Pssm-ID: 206682 [Multi-domain] Cd Length: 174 Bit Score: 54.36 E-value: 1.56e-08
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| MnmE | COG0486 | tRNA U34 5-carboxymethylaminomethyl modifying GTPase MnmE/TrmE [Translation, ribosomal ... |
88-191 | 2.17e-08 | ||||||||||
tRNA U34 5-carboxymethylaminomethyl modifying GTPase MnmE/TrmE [Translation, ribosomal structure and biogenesis]; tRNA U34 5-carboxymethylaminomethyl modifying GTPase MnmE/TrmE is part of the Pathway/BioSystem: tRNA modification Pssm-ID: 440253 [Multi-domain] Cd Length: 448 Bit Score: 56.61 E-value: 2.17e-08
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| eIF2_gamma | cd01888 | Gamma subunit of initiation factor 2 (eIF2 gamma); eIF2 is a heterotrimeric translation ... |
6-184 | 4.26e-08 | ||||||||||
Gamma subunit of initiation factor 2 (eIF2 gamma); eIF2 is a heterotrimeric translation initiation factor that consists of alpha, beta, and gamma subunits. The GTP-bound gamma subunit also binds initiator methionyl-tRNA and delivers it to the 40S ribosomal subunit. Following hydrolysis of GTP to GDP, eIF2:GDP is released from the ribosome. The gamma subunit has no intrinsic GTPase activity, but is stimulated by the GTPase activating protein (GAP) eIF5, and GDP/GTP exchange is stimulated by the guanine nucleotide exchange factor (GEF) eIF2B. eIF2B is a heteropentamer, and the epsilon chain binds eIF2. Both eIF5 and eIF2B-epsilon are known to bind strongly to eIF2-beta, but have also been shown to bind directly to eIF2-gamma. It is possible that eIF2-beta serves simply as a high-affinity docking site for eIF5 and eIF2B-epsilon, or that eIF2-beta serves a regulatory role. eIF2-gamma is found only in eukaryotes and archaea. It is closely related to SelB, the selenocysteine-specific elongation factor from eubacteria. The translational factor components of the ternary complex, IF2 in eubacteria and eIF2 in eukaryotes are not the same protein (despite their unfortunately similar names). Both factors are GTPases; however, eubacterial IF-2 is a single polypeptide, while eIF2 is heterotrimeric. eIF2-gamma is a member of the same family as eubacterial IF2, but the two proteins are only distantly related. This family includes translation initiation, elongation, and release factors. Pssm-ID: 206675 [Multi-domain] Cd Length: 197 Bit Score: 53.81 E-value: 4.26e-08
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| EF_Tu | cd01884 | Elongation Factor Tu (EF-Tu) GTP-binding proteins; EF-Tu subfamily. This subfamily includes ... |
3-183 | 4.33e-08 | ||||||||||
Elongation Factor Tu (EF-Tu) GTP-binding proteins; EF-Tu subfamily. This subfamily includes orthologs of translation elongation factor EF-Tu in bacteria, mitochondria, and chloroplasts. It is one of several GTP-binding translation factors found in the larger family of GTP-binding elongation factors. The eukaryotic counterpart, eukaryotic translation elongation factor 1 (eEF-1 alpha), is excluded from this family. EF-Tu is one of the most abundant proteins in bacteria, as well as, one of the most highly conserved, and in a number of species the gene is duplicated with identical function. When bound to GTP, EF-Tu can form a complex with any (correctly) aminoacylated tRNA except those for initiation and for selenocysteine, in which case EF-Tu is replaced by other factors. Transfer RNA is carried to the ribosome in these complexes for protein translation. Pssm-ID: 206671 [Multi-domain] Cd Length: 195 Bit Score: 53.74 E-value: 4.33e-08
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| PRK00093 | PRK00093 | GTP-binding protein Der; Reviewed |
16-179 | 5.56e-08 | ||||||||||
GTP-binding protein Der; Reviewed Pssm-ID: 234628 [Multi-domain] Cd Length: 435 Bit Score: 55.44 E-value: 5.56e-08
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| MnmE_helical | pfam12631 | MnmE helical domain; The tRNA modification GTPase MnmE consists of three domains. An ... |
88-191 | 6.25e-08 | ||||||||||
MnmE helical domain; The tRNA modification GTPase MnmE consists of three domains. An N-terminal domain, a helical domain and a GTPase domain which is nested within the helical domain. This family represents the helical domain. Pssm-ID: 463649 [Multi-domain] Cd Length: 326 Bit Score: 54.79 E-value: 6.25e-08
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| EFG_mtEFG_C | cd03713 | EFG_mtEFG_C: domains similar to the C-terminal domain of the bacterial translational ... |
401-476 | 1.39e-07 | ||||||||||
EFG_mtEFG_C: domains similar to the C-terminal domain of the bacterial translational elongation factor (EF) EF-G. Included in this group is the C-terminus of mitochondrial Elongation factor G1 (mtEFG1) and G2 (mtEFG2) proteins. Eukaryotic cells harbor 2 protein synthesis systems: one localized in the cytoplasm, the other in the mitochondria. Most factors regulating mitochondrial protein synthesis are encoded by nuclear genes, translated in the cytoplasm, and then transported to the mitochondria. The eukaryotic system of elongation factor (EF) components is more complex than that in prokaryotes, with both cytoplasmic and mitochondrial elongation factors and multiple isoforms being expressed in certain species. During the process of peptide synthesis and tRNA site changes, the ribosome is moved along the mRNA a distance equal to one codon with the addition of each amino acid. In bacteria this translocation step is catalyzed by EF-G_GTP, which is hydrolyzed to provide the required energy. Thus, this action releases the uncharged tRNA from the P site and transfers the newly formed peptidyl-tRNA from the A site to the P site. Eukaryotic mtEFG1 proteins show significant homology to bacterial EF-Gs. Mutants in yeast mtEFG1 have impaired mitochondrial protein synthesis, respiratory defects and a tendency to lose mitochondrial DNA. No clear phenotype has been found for mutants in the yeast homologue of mtEFG2, MEF2. Pssm-ID: 239683 [Multi-domain] Cd Length: 78 Bit Score: 49.06 E-value: 1.39e-07
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| trmE | cd04164 | trmE is a tRNA modification GTPase; TrmE (MnmE, ThdF, MSS1) is a 3-domain protein found in ... |
88-178 | 1.75e-07 | ||||||||||
trmE is a tRNA modification GTPase; TrmE (MnmE, ThdF, MSS1) is a 3-domain protein found in bacteria and eukaryotes. It controls modification of the uridine at the wobble position (U34) of tRNAs that read codons ending with A or G in the mixed codon family boxes. TrmE contains a GTPase domain that forms a canonical Ras-like fold. It functions a molecular switch GTPase, and apparently uses a conformational change associated with GTP hydrolysis to promote the tRNA modification reaction, in which the conserved cysteine in the C-terminal domain is thought to function as a catalytic residue. In bacteria that are able to survive in extremely low pH conditions, TrmE regulates glutamate-dependent acid resistance. Pssm-ID: 206727 [Multi-domain] Cd Length: 159 Bit Score: 50.96 E-value: 1.75e-07
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| EFG_III | cd16262 | Domain III of Elongation Factor G (EFG); This model represents domain III of bacterial ... |
301-368 | 3.26e-07 | ||||||||||
Domain III of Elongation Factor G (EFG); This model represents domain III of bacterial Elongation factor G (EF-G), and mitochondrial Elongation factor G1 (mtEFG1) and G2 (mtEFG2), which play an important role during peptide synthesis and tRNA site changes. In bacteria, this translocation step is catalyzed by EF-G_GTP, which is hydrolyzed to provide the required energy. Thus, this action releases the uncharged tRNA from the P site and transfers the newly formed peptidyl-tRNA from the A site to the P site. Eukaryotic cells harbor 2 protein synthesis systems: one localized in the cytoplasm, the other in the mitochondria. Most factors regulating mitochondrial protein synthesis are encoded by nuclear genes, translated in the cytoplasm, and then transported to the mitochondria. The eukaryotic system of elongation factor (EF) components is more complex than that in prokaryotes, with both cytoplasmic and mitochondrial elongation factors and multiple isoforms being expressed in certain species. mtEFG1 and mtEFG2 show significant homology to bacterial EF-Gs. Mutants in yeast mtEFG1 have impaired mitochondrial protein synthesis, respiratory defects, and a tendency to lose mitochondrial DNA. No clear phenotype has been found for mutants of the yeast homolog of mtEFG2, MEF2. Pssm-ID: 293919 [Multi-domain] Cd Length: 76 Bit Score: 47.84 E-value: 3.26e-07
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| Era | cd04163 | E. coli Ras-like protein (Era) is a multifunctional GTPase; Era (E. coli Ras-like protein) is ... |
69-178 | 3.54e-07 | ||||||||||
E. coli Ras-like protein (Era) is a multifunctional GTPase; Era (E. coli Ras-like protein) is a multifunctional GTPase found in all bacteria except some eubacteria. It binds to the 16S ribosomal RNA (rRNA) of the 30S subunit and appears to play a role in the assembly of the 30S subunit, possibly by chaperoning the 16S rRNA. It also contacts several assembly elements of the 30S subunit. Era couples cell growth with cytokinesis and plays a role in cell division and energy metabolism. Homologs have also been found in eukaryotes. Era contains two domains: the N-terminal GTPase domain and a C-terminal domain KH domain that is critical for RNA binding. Both domains are important for Era function. Era is functionally able to compensate for deletion of RbfA, a cold-shock adaptation protein that is required for efficient processing of the 16S rRNA. Pssm-ID: 206726 [Multi-domain] Cd Length: 168 Bit Score: 50.15 E-value: 3.54e-07
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| Translation_Factor_II_like | cd01342 | Domain II of Elongation factor Tu (EF-Tu)-like proteins; Elongation factor Tu consists of ... |
191-275 | 1.03e-06 | ||||||||||
Domain II of Elongation factor Tu (EF-Tu)-like proteins; Elongation factor Tu consists of three structural domains. Domain II adopts a beta barrel structure and is involved in binding to charged tRNA. Domain II is found in other proteins such as elongation factor G and translation initiation factor IF-2. This group also includes the C2 subdomain of domain IV of IF-2 that has the same fold as domain II of (EF-Tu). Like IF-2 from certain prokaryotes such as Thermus thermophilus, mitochondrial IF-2 lacks domain II, which is thought to be involved in binding of E. coli IF-2 to 30S subunits. Pssm-ID: 293888 [Multi-domain] Cd Length: 80 Bit Score: 46.49 E-value: 1.03e-06
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| Rab | cd00154 | Ras-related in brain (Rab) family of small guanosine triphosphatases (GTPases); Rab GTPases ... |
62-178 | 1.66e-06 | ||||||||||
Ras-related in brain (Rab) family of small guanosine triphosphatases (GTPases); Rab GTPases form the largest family within the Ras superfamily. There are at least 60 Rab genes in the human genome, and a number of Rab GTPases are conserved from yeast to humans. Rab GTPases are small, monomeric proteins that function as molecular switches to regulate vesicle trafficking pathways. The different Rab GTPases are localized to the cytosolic face of specific intracellular membranes, where they regulate distinct steps in membrane traffic pathways. In the GTP-bound form, Rab GTPases recruit specific sets of effector proteins onto membranes. Through their effectors, Rab GTPases regulate vesicle formation, actin- and tubulin-dependent vesicle movement, and membrane fusion. GTPase activating proteins (GAPs) interact with GTP-bound Rab and accelerate the hydrolysis of GTP to GDP. Guanine nucleotide exchange factors (GEFs) interact with GDP-bound Rabs to promote the formation of the GTP-bound state. Rabs are further regulated by guanine nucleotide dissociation inhibitors (GDIs), which mask C-terminal lipid binding and promote cytosolic localization. While most unicellular organisms possess 5-20 Rab members, several have been found to possess 60 or more Rabs; for many of these Rab isoforms, homologous proteins are not found in other organisms. Most Rab GTPases contain a lipid modification site at the C-terminus, with sequence motifs CC, CXC, or CCX. Lipid binding is essential for membrane attachment, a key feature of most Rab proteins. Since crystal structures often lack C-terminal residues, the lipid modification site is not available for annotation in many of the CDs in the hierarchy, but is included where possible. Pssm-ID: 206640 [Multi-domain] Cd Length: 159 Bit Score: 48.22 E-value: 1.66e-06
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| CysN | COG2895 | Sulfate adenylyltransferase subunit 1, EFTu-like GTPase family [Inorganic ion transport and ... |
6-231 | 1.77e-06 | ||||||||||
Sulfate adenylyltransferase subunit 1, EFTu-like GTPase family [Inorganic ion transport and metabolism]; Sulfate adenylyltransferase subunit 1, EFTu-like GTPase family is part of the Pathway/BioSystem: Cysteine biosynthesis Pssm-ID: 442140 [Multi-domain] Cd Length: 430 Bit Score: 50.47 E-value: 1.77e-06
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| GTP_EFTU_D2 | pfam03144 | Elongation factor Tu domain 2; Elongation factor Tu consists of three structural domains, this ... |
205-275 | 2.08e-06 | ||||||||||
Elongation factor Tu domain 2; Elongation factor Tu consists of three structural domains, this is the second domain. This domain adopts a beta barrel structure. This the second domain is involved in binding to charged tRNA. This domain is also found in other proteins such as elongation factor G and translation initiation factor IF-2. This domain is structurally related to pfam03143, and in fact has weak sequence matches to this domain. Pssm-ID: 427163 [Multi-domain] Cd Length: 73 Bit Score: 45.72 E-value: 2.08e-06
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| EFG_III | pfam14492 | Elongation Factor G, domain III; This domain is found in Elongation Factor G. It shares a ... |
292-365 | 3.98e-06 | ||||||||||
Elongation Factor G, domain III; This domain is found in Elongation Factor G. It shares a similar structure with domain V (pfam00679). Structural studies in drosophila indicate this is domain 3. Pssm-ID: 464188 [Multi-domain] Cd Length: 75 Bit Score: 44.78 E-value: 3.98e-06
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| EFG_C | smart00838 | Elongation factor G C-terminus; This domain includes the carboxyl terminal regions of ... |
401-477 | 8.46e-06 | ||||||||||
Elongation factor G C-terminus; This domain includes the carboxyl terminal regions of Elongation factor G, elongation factor 2 and some tetracycline resistance proteins and adopt a ferredoxin-like fold. Pssm-ID: 197906 [Multi-domain] Cd Length: 85 Bit Score: 44.03 E-value: 8.46e-06
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| trmE | PRK05291 | tRNA uridine-5-carboxymethylaminomethyl(34) synthesis GTPase MnmE; |
88-178 | 9.39e-06 | ||||||||||
tRNA uridine-5-carboxymethylaminomethyl(34) synthesis GTPase MnmE; Pssm-ID: 235392 [Multi-domain] Cd Length: 449 Bit Score: 48.18 E-value: 9.39e-06
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| RalA_RalB | cd04139 | Ral (Ras-like) family containing highly homologous RalA and RalB; The Ral (Ras-like) subfamily ... |
67-180 | 9.75e-06 | ||||||||||
Ral (Ras-like) family containing highly homologous RalA and RalB; The Ral (Ras-like) subfamily consists of the highly homologous RalA and RalB. Ral proteins are believed to play a crucial role in tumorigenesis, metastasis, endocytosis, and actin cytoskeleton dynamics. Despite their high sequence similarity (>80% sequence identity), nonoverlapping and opposing functions have been assigned to RalA and RalBs in tumor migration. In human bladder and prostate cancer cells, RalB promotes migration while RalA inhibits it. A Ral-specific set of GEFs has been identified that are activated by Ras binding. This RalGEF activity is enhanced by Ras binding to another of its target proteins, phosphatidylinositol 3-kinase (PI3K). Ral effectors include RLIP76/RalBP1, a Rac/cdc42 GAP, and the exocyst (Sec6/8) complex, a heterooctomeric protein complex that is involved in tethering vesicles to specific sites on the plasma membrane prior to exocytosis. In rat kidney cells, RalB is required for functional assembly of the exocyst and for localizing the exocyst to the leading edge of migrating cells. In human cancer cells, RalA is required to support anchorage-independent proliferation and RalB is required to suppress apoptosis. RalA has been shown to localize to the plasma membrane while RalB is localized to the intracellular vesicles. Most Ras proteins contain a lipid modification site at the C-terminus, with a typical sequence motif CaaX, where a = an aliphatic amino acid and X = any amino acid. Lipid binding is essential for membrane attachment, a key feature of most Ras proteins. Due to the presence of truncated sequences in this CD, the lipid modification site is not available for annotation. Pssm-ID: 206710 [Multi-domain] Cd Length: 163 Bit Score: 45.88 E-value: 9.75e-06
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| Ras | pfam00071 | Ras family; Includes sub-families Ras, Rab, Rac, Ral, Ran, Rap Ypt1 and more. Shares P-loop ... |
67-181 | 1.35e-05 | ||||||||||
Ras family; Includes sub-families Ras, Rab, Rac, Ral, Ran, Rap Ypt1 and more. Shares P-loop motif with GTP_EFTU, arf and myosin_head. See pfam00009 pfam00025, pfam00063. As regards Rab GTPases, these are important regulators of vesicle formation, motility and fusion. They share a fold in common with all Ras GTPases: this is a six-stranded beta-sheet surrounded by five alpha-helices. Pssm-ID: 425451 [Multi-domain] Cd Length: 162 Bit Score: 45.58 E-value: 1.35e-05
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| HflX | COG2262 | 50S ribosomal subunit-associated GTPase HflX [Translation, ribosomal structure and biogenesis]; ... |
99-184 | 1.70e-05 | ||||||||||
50S ribosomal subunit-associated GTPase HflX [Translation, ribosomal structure and biogenesis]; Pssm-ID: 441863 [Multi-domain] Cd Length: 419 Bit Score: 47.39 E-value: 1.70e-05
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| cysN | PRK05124 | sulfate adenylyltransferase subunit 1; Provisional |
13-240 | 2.98e-05 | ||||||||||
sulfate adenylyltransferase subunit 1; Provisional Pssm-ID: 235349 [Multi-domain] Cd Length: 474 Bit Score: 46.83 E-value: 2.98e-05
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| HflX | cd01878 | HflX GTPase family; HflX subfamily. A distinct conserved domain with a glycine-rich segment ... |
99-180 | 5.04e-05 | ||||||||||
HflX GTPase family; HflX subfamily. A distinct conserved domain with a glycine-rich segment N-terminal of the GTPase domain characterizes the HflX subfamily. The E. coli HflX has been implicated in the control of the lambda cII repressor proteolysis, but the actual biological functions of these GTPases remain unclear. HflX is widespread, but not universally represented in all three superkingdoms. Pssm-ID: 206666 [Multi-domain] Cd Length: 204 Bit Score: 44.76 E-value: 5.04e-05
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| Ras | cd00876 | Rat sarcoma (Ras) family of small guanosine triphosphatases (GTPases); The Ras family of the ... |
67-180 | 8.16e-05 | ||||||||||
Rat sarcoma (Ras) family of small guanosine triphosphatases (GTPases); The Ras family of the Ras superfamily includes classical N-Ras, H-Ras, and K-Ras, as well as R-Ras, Rap, Ral, Rheb, Rhes, ARHI, RERG, Rin/Rit, RSR1, RRP22, Ras2, Ras-dva, and RGK proteins. Ras proteins regulate cell growth, proliferation and differentiation. Ras is activated by guanine nucleotide exchange factors (GEFs) that release GDP and allow GTP binding. Many RasGEFs have been identified. These are sequestered in the cytosol until activation by growth factors triggers recruitment to the plasma membrane or Golgi, where the GEF colocalizes with Ras. Active GTP-bound Ras interacts with several effector proteins: among the best characterized are the Raf kinases, phosphatidylinositol 3-kinase (PI3K), RalGEFs and NORE/MST1. Most Ras proteins contain a lipid modification site at the C-terminus, with a typical sequence motif CaaX, where a = an aliphatic amino acid and X = any amino acid. Lipid binding is essential for membrane attachment, a key feature of most Ras proteins. Due to the presence of truncated sequences in this CD, the lipid modification site is not available for annotation. Pssm-ID: 206642 [Multi-domain] Cd Length: 160 Bit Score: 43.28 E-value: 8.16e-05
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| PRK05506 | PRK05506 | bifunctional sulfate adenylyltransferase subunit 1/adenylylsulfate kinase protein; Provisional |
13-149 | 1.11e-04 | ||||||||||
bifunctional sulfate adenylyltransferase subunit 1/adenylylsulfate kinase protein; Provisional Pssm-ID: 180120 [Multi-domain] Cd Length: 632 Bit Score: 45.31 E-value: 1.11e-04
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| Arf_Arl | cd00878 | ADP-ribosylation factor(Arf)/Arf-like (Arl) small GTPases; Arf (ADP-ribosylation factor)/Arl ... |
123-178 | 1.38e-04 | ||||||||||
ADP-ribosylation factor(Arf)/Arf-like (Arl) small GTPases; Arf (ADP-ribosylation factor)/Arl (Arf-like) small GTPases. Arf proteins are activators of phospholipase D isoforms. Unlike Ras proteins they lack cysteine residues at their C-termini and therefore are unlikely to be prenylated. Arfs are N-terminally myristoylated. Members of the Arf family are regulators of vesicle formation in intracellular traffic that interact reversibly with membranes of the secretory and endocytic compartments in a GTP-dependent manner. They depart from other small GTP-binding proteins by a unique structural device, interswitch toggle, that implements front-back communication from N-terminus to the nucleotide binding site. Arf-like (Arl) proteins are close relatives of the Arf, but only Arl1 has been shown to function in membrane traffic like the Arf proteins. Arl2 has an unrelated function in the folding of native tubulin, and Arl4 may function in the nucleus. Most other Arf family proteins are so far relatively poorly characterized. Thus, despite their significant sequence homologies, Arf family proteins may regulate unrelated functions. Pssm-ID: 206644 [Multi-domain] Cd Length: 158 Bit Score: 42.56 E-value: 1.38e-04
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| YjeQ_EngC | cd01854 | Ribosomal interacting GTPase YjeQ/EngC, a circularly permuted subfamily of the Ras GTPases; ... |
123-176 | 2.62e-04 | ||||||||||
Ribosomal interacting GTPase YjeQ/EngC, a circularly permuted subfamily of the Ras GTPases; YjeQ (YloQ in Bacillus subtilis) is a ribosomal small subunit-dependent GTPase; hence also known as RsgA. YjeQ is a late-stage ribosomal biogenesis factor involved in the 30S subunit maturation, and it represents a protein family whose members are broadly conserved in bacteria and have been shown to be essential to the growth of E. coli and B. subtilis. Proteins of the YjeQ family contain all sequence motifs typical of the vast class of P-loop-containing GTPases, but show a circular permutation, with a G4-G1-G3 pattern of motifs as opposed to the regular G1-G3-G4 pattern seen in most GTPases. All YjeQ family proteins display a unique domain architecture, which includes an N-terminal OB-fold RNA-binding domain, the central permuted GTPase domain, and a zinc knuckle-like C-terminal cysteine domain. Pssm-ID: 206747 [Multi-domain] Cd Length: 211 Bit Score: 42.39 E-value: 2.62e-04
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| PRK04004 | PRK04004 | translation initiation factor IF-2; Validated |
1-173 | 4.86e-04 | ||||||||||
translation initiation factor IF-2; Validated Pssm-ID: 235195 [Multi-domain] Cd Length: 586 Bit Score: 42.86 E-value: 4.86e-04
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| H_N_K_Ras_like | cd04138 | Ras GTPase family containing H-Ras,N-Ras and K-Ras4A/4B; H-Ras/N-Ras/K-Ras subfamily. H-Ras, ... |
67-180 | 1.04e-03 | ||||||||||
Ras GTPase family containing H-Ras,N-Ras and K-Ras4A/4B; H-Ras/N-Ras/K-Ras subfamily. H-Ras, N-Ras, and K-Ras4A/4B are the prototypical members of the Ras family. These isoforms generate distinct signal outputs despite interacting with a common set of activators and effectors, and are strongly associated with oncogenic progression in tumor initiation. Mutated versions of Ras that are insensitive to GAP stimulation (and are therefore constitutively active) are found in a significant fraction of human cancers. Many Ras guanine nucleotide exchange factors (GEFs) have been identified. They are sequestered in the cytosol until activation by growth factors triggers recruitment to the plasma membrane or Golgi, where the GEF colocalizes with Ras. Active (GTP-bound) Ras interacts with several effector proteins that stimulate a variety of diverse cytoplasmic signaling activities. Some are known to positively mediate the oncogenic properties of Ras, including Raf, phosphatidylinositol 3-kinase (PI3K), RalGEFs, and Tiam1. Others are proposed to play negative regulatory roles in oncogenesis, including RASSF and NORE/MST1. Most Ras proteins contain a lipid modification site at the C-terminus, with a typical sequence motif CaaX, where a = an aliphatic amino acid and X = any amino acid. Lipid binding is essential for membrane attachment, a key feature of most Ras proteins. Due to the presence of truncated sequences in this CD, the lipid modification site is not available for annotation. Pssm-ID: 133338 [Multi-domain] Cd Length: 162 Bit Score: 40.09 E-value: 1.04e-03
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| RAS | smart00173 | Ras subfamily of RAS small GTPases; Similar in fold and function to the bacterial EF-Tu GTPase. ... |
67-180 | 1.20e-03 | ||||||||||
Ras subfamily of RAS small GTPases; Similar in fold and function to the bacterial EF-Tu GTPase. p21Ras couples receptor Tyr kinases and G protein receptors to protein kinase cascades Pssm-ID: 214541 [Multi-domain] Cd Length: 164 Bit Score: 39.85 E-value: 1.20e-03
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| BipA_TypA_C | cd03710 | BipA_TypA_C: a C-terminal portion of BipA or TypA having homology to the C terminal domains of ... |
401-446 | 1.58e-03 | ||||||||||
BipA_TypA_C: a C-terminal portion of BipA or TypA having homology to the C terminal domains of the elongation factors EF-G and EF-2. A member of the ribosome binding GTPase superfamily, BipA is widely distributed in bacteria and plants. BipA is a highly conserved protein with global regulatory properties in Escherichia coli. BipA is phosphorylated on a tyrosine residue under some cellular conditions. Mutants show altered regulation of some pathways. BipA functions as a translation factor that is required specifically for the expression of the transcriptional modulator Fis. BipA binds to ribosomes at a site that coincides with that of EF-G and has a GTPase activity that is sensitive to high GDP:GTP ratios and, is stimulated by 70S ribosomes programmed with mRNA and aminoacylated tRNAs. The growth rate-dependent induction of BipA allows the efficient expression of Fis, thereby modulating a range of downstream processes, including DNA metabolism and type III secretion. Pssm-ID: 239681 [Multi-domain] Cd Length: 79 Bit Score: 37.48 E-value: 1.58e-03
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| EFG_mtEFG_II | cd04088 | Domain II of bacterial elongation factor G and C-terminal domain of mitochondrial Elongation ... |
201-275 | 1.72e-03 | ||||||||||
Domain II of bacterial elongation factor G and C-terminal domain of mitochondrial Elongation factors G1 and G2; This family represents the domain II of bacterial Elongation factor G (EF-G)and mitochondrial Elongation factors G1 (mtEFG1) and G2 (mtEFG2). During the process of peptide synthesis and tRNA site changes, the ribosome is moved along the mRNA a distance equal to one codon with the addition of each amino acid. In bacteria this translocation step is catalyzed by EF-G_GTP, which is hydrolyzed to provide the required energy. Thus, this action releases the uncharged tRNA from the P site and transfers the newly formed peptidyl-tRNA from the A site to the P site. Eukaryotic cells harbor 2 protein synthesis systems: one localized in the cytoplasm, the other in the mitochondria. Most factors regulating mitochondrial protein synthesis are encoded by nuclear genes, translated in the cytoplasm, and then transported to the mitochondria. The eukaryotic system of elongation factor (EF) components is more complex than that in prokaryotes, with both cytoplasmic and mitochondrial elongation factors and multiple isoforms being expressed in certain species. mtEFG1 and mtEFG2 show significant homology to bacterial EF-Gs. Mutants in yeast mtEFG1 have impaired mitochondrial protein synthesis, respiratory defects and a tendency to lose mitochondrial DNA. No clear phenotype has been found for mutants in the yeast homolog of mtEFG2, MEF2. Pssm-ID: 293905 [Multi-domain] Cd Length: 83 Bit Score: 37.50 E-value: 1.72e-03
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| MMR_HSR1 | pfam01926 | 50S ribosome-binding GTPase; The full-length GTPase protein is required for the complete ... |
51-132 | 2.40e-03 | ||||||||||
50S ribosome-binding GTPase; The full-length GTPase protein is required for the complete activity of the protein of interacting with the 50S ribosome and binding of both adenine and guanine nucleotides, with a preference for guanine nucleotide. Pssm-ID: 460387 [Multi-domain] Cd Length: 113 Bit Score: 37.98 E-value: 2.40e-03
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| BipA_TypA_II | cd03691 | Domain II of BipA; BipA (also called TypA) is a highly conserved protein with global ... |
191-286 | 3.50e-03 | ||||||||||
Domain II of BipA; BipA (also called TypA) is a highly conserved protein with global regulatory properties in Escherichia coli. BipA is phosphorylated on a tyrosine residue under some cellular conditions. Mutants show altered regulation of some pathways. BipA functions as a translation factor that is required specifically for the expression of the transcriptional modulator Fis. BipA binds to ribosomes at a site that coincides with that of EF-G and has a GTPase activity that is sensitive to high GDP:GTP ratios and is stimulated by 70S ribosomes programmed with mRNA and aminoacylated tRNAs. The growth rate-dependent induction of BipA allows the efficient expression of Fis, thereby modulating a range of downstream processes, including DNA metabolism and type III secretion. The domain II of BipA shows similarity to the domain II of the elongation factors (EFs) EF-G and EF-Tu. Pssm-ID: 293892 [Multi-domain] Cd Length: 94 Bit Score: 37.17 E-value: 3.50e-03
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| small_GTPase | smart00010 | Small GTPase of the Ras superfamily; ill-defined subfamily; SMART predicts Ras-like small ... |
67-180 | 3.95e-03 | ||||||||||
Small GTPase of the Ras superfamily; ill-defined subfamily; SMART predicts Ras-like small GTPases of the ARF, RAB, RAN, RAS, and SAR subfamilies. Others that could not be classified in this way are predicted to be members of the small GTPase superfamily without predictions of the subfamily. Pssm-ID: 197466 [Multi-domain] Cd Length: 166 Bit Score: 38.31 E-value: 3.95e-03
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| Obg | cd01898 | Obg GTPase; The Obg nucleotide binding protein subfamily has been implicated in stress ... |
129-176 | 4.47e-03 | ||||||||||
Obg GTPase; The Obg nucleotide binding protein subfamily has been implicated in stress response, chromosome partitioning, replication initiation, mycelium development, and sporulation. Obg proteins are among a large group of GTP binding proteins conserved from bacteria to humans. The E. coli homolog, ObgE is believed to function in ribosomal biogenesis. Members of the subfamily contain two equally and highly conserved domains, a C-terminal GTP binding domain and an N-terminal glycine-rich domain. Pssm-ID: 206685 [Multi-domain] Cd Length: 170 Bit Score: 38.17 E-value: 4.47e-03
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| Arf | pfam00025 | ADP-ribosylation factor family; Pfam combines a number of different Prosite families together |
121-180 | 6.28e-03 | ||||||||||
ADP-ribosylation factor family; Pfam combines a number of different Prosite families together Pssm-ID: 459636 [Multi-domain] Cd Length: 160 Bit Score: 37.59 E-value: 6.28e-03
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| obgE | PRK12297 | GTPase CgtA; Reviewed |
129-197 | 6.49e-03 | ||||||||||
GTPase CgtA; Reviewed Pssm-ID: 237046 [Multi-domain] Cd Length: 424 Bit Score: 39.31 E-value: 6.49e-03
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