PDZ domain-containing protein [Actinobacteria bacterium]
Protein Classification
S1C family serine protease( domain architecture ID 11415729)
S1C family serine protease containing a C-terminal PDZ domain, similar to the Deg/high-temperature requirement factor A (HtrA) family of housekeeping serine proteases that participate in folding and degradation of aberrant proteins, and in processing and maturation of native proteins
List of domain hits
| Name | Accession | Description | Interval | E-value | |||||
| DegQ | COG0265 | Periplasmic serine protease, S1-C subfamily, contain C-terminal PDZ domain [Posttranslational ... |
104-397 | 1.44e-111 | |||||
Periplasmic serine protease, S1-C subfamily, contain C-terminal PDZ domain [Posttranslational modification, protein turnover, chaperones]; : Pssm-ID: 440035 [Multi-domain] Cd Length: 274 Bit Score: 327.88 E-value: 1.44e-111
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| Name | Accession | Description | Interval | E-value | ||||||
| DegQ | COG0265 | Periplasmic serine protease, S1-C subfamily, contain C-terminal PDZ domain [Posttranslational ... |
104-397 | 1.44e-111 | ||||||
Periplasmic serine protease, S1-C subfamily, contain C-terminal PDZ domain [Posttranslational modification, protein turnover, chaperones]; Pssm-ID: 440035 [Multi-domain] Cd Length: 274 Bit Score: 327.88 E-value: 1.44e-111
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| degP_htrA_DO | TIGR02037 | periplasmic serine protease, Do/DeqQ family; This family consists of a set proteins various ... |
68-400 | 3.58e-96 | ||||||
periplasmic serine protease, Do/DeqQ family; This family consists of a set proteins various designated DegP, heat shock protein HtrA, and protease DO. The ortholog in Pseudomonas aeruginosa is designated MucD and is found in an operon that controls mucoid phenotype. This family also includes the DegQ (HhoA) paralog in E. coli which can rescue a DegP mutant, but not the smaller DegS paralog, which cannot. Members of this family are located in the periplasm and have separable functions as both protease and chaperone. Members have a trypsin domain and two copies of a PDZ domain. This protein protects bacteria from thermal and other stresses and may be important for the survival of bacterial pathogens.// The chaperone function is dominant at low temperatures, whereas the proteolytic activity is turned on at elevated temperatures. [Protein fate, Protein folding and stabilization, Protein fate, Degradation of proteins, peptides, and glycopeptides] Pssm-ID: 273938 [Multi-domain] Cd Length: 428 Bit Score: 294.13 E-value: 3.58e-96
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| PRK10139 | PRK10139 | serine endoprotease DegQ; |
25-398 | 3.15e-56 | ||||||
serine endoprotease DegQ; Pssm-ID: 182262 [Multi-domain] Cd Length: 455 Bit Score: 191.31 E-value: 3.15e-56
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| Trypsin_2 | pfam13365 | Trypsin-like peptidase domain; This family includes trypsin-like peptidase domains. |
106-244 | 1.24e-35 | ||||||
Trypsin-like peptidase domain; This family includes trypsin-like peptidase domains. Pssm-ID: 433149 [Multi-domain] Cd Length: 142 Bit Score: 127.54 E-value: 1.24e-35
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| MarP_fam_protase | NF033740 | MarP family serine protease; The founding member of this family of membrane-spanning serine ... |
106-276 | 2.76e-21 | ||||||
MarP family serine protease; The founding member of this family of membrane-spanning serine proteases, which is restricted to Actinobacteria, is the acid resistance periplasmic serine protease MarP of Mycobacterium tuberculosis. Recent work shows that MarP is required to cleave and activate the peptidoglycan hydrolase RipA, and loss of RipA activity creates a defect in progeny separation during cell division. Therefore, the requirement for MarP in order to survive acidic conditions may be a consequence of peptidoglycan hydrolysis requirements, explaining why MarP family members are distributed more broadly in the Actinobacteria than the subset of species capable of surviving intracellularly as pathogens. Pssm-ID: 468161 [Multi-domain] Cd Length: 390 Bit Score: 94.48 E-value: 2.76e-21
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| cpPDZ_Deg_HtrA-like | cd06779 | permuted PDZ domain of Deg/high-temperature requirement factor A (HtrA) family of housekeeping ... |
285-390 | 4.25e-12 | ||||||
permuted PDZ domain of Deg/high-temperature requirement factor A (HtrA) family of housekeeping serine proteases and related domains; PDZ (PSD-95 (Postsynaptic density protein 95), Dlg (Discs large protein), and ZO-1 (Zonula occludens-1)) domain of Deg/HtrA-type serine proteases that participate in folding and degradation of aberrant proteins, and in processing and maturation of native proteins. Typically, these proteases have an N-terminal serine protease domain and at least one C-terminal PDZ domain that recognizes substrates, and in some cases activates the protease function. An exception is yeast Nma11p which has two protease domains and four PDZ domains; its N-terminal half is comprised of a protease domain, followed by two PDZ domains, and its C-terminal half has a similar domain arrangement. HtrA-type proteases include the human HtrA1-4 and MBTPS2, tricorn protease, DegS, DegP and C-terminal processing peptidase, cyanobacterial serine proteases Hhoa, HhoB, and HtrA, and yeast Nma11p. PDZ domains usually bind in a sequence-specific manner to short peptide sequences located at the C-termini of their partner proteins (known as PDZ binding motifs). The PDZ superfamily includes canonical PDZ domains and as well as those with circular permutations and domain swapping of beta-strands. The canonical PDZ domain contains six beta-strands A-F and two alpha-helices (alpha-helix 1 and 2); arranged as A, B, C, alpha-helix 1, beta-strands D, E, alpha-helix 2 and beta-strand F. This Deg/HtrA family PDZ domain is a circularly permuted PDZ domain which places beta-strand A at the C-terminus. Another permutation exists in the PDZ superfamily which places both beta-strands A and B on the C-terminus. Pssm-ID: 467621 [Multi-domain] Cd Length: 91 Bit Score: 61.93 E-value: 4.25e-12
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| Name | Accession | Description | Interval | E-value | ||||||
| DegQ | COG0265 | Periplasmic serine protease, S1-C subfamily, contain C-terminal PDZ domain [Posttranslational ... |
104-397 | 1.44e-111 | ||||||
Periplasmic serine protease, S1-C subfamily, contain C-terminal PDZ domain [Posttranslational modification, protein turnover, chaperones]; Pssm-ID: 440035 [Multi-domain] Cd Length: 274 Bit Score: 327.88 E-value: 1.44e-111
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| degP_htrA_DO | TIGR02037 | periplasmic serine protease, Do/DeqQ family; This family consists of a set proteins various ... |
68-400 | 3.58e-96 | ||||||
periplasmic serine protease, Do/DeqQ family; This family consists of a set proteins various designated DegP, heat shock protein HtrA, and protease DO. The ortholog in Pseudomonas aeruginosa is designated MucD and is found in an operon that controls mucoid phenotype. This family also includes the DegQ (HhoA) paralog in E. coli which can rescue a DegP mutant, but not the smaller DegS paralog, which cannot. Members of this family are located in the periplasm and have separable functions as both protease and chaperone. Members have a trypsin domain and two copies of a PDZ domain. This protein protects bacteria from thermal and other stresses and may be important for the survival of bacterial pathogens.// The chaperone function is dominant at low temperatures, whereas the proteolytic activity is turned on at elevated temperatures. [Protein fate, Protein folding and stabilization, Protein fate, Degradation of proteins, peptides, and glycopeptides] Pssm-ID: 273938 [Multi-domain] Cd Length: 428 Bit Score: 294.13 E-value: 3.58e-96
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| PRK10139 | PRK10139 | serine endoprotease DegQ; |
25-398 | 3.15e-56 | ||||||
serine endoprotease DegQ; Pssm-ID: 182262 [Multi-domain] Cd Length: 455 Bit Score: 191.31 E-value: 3.15e-56
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| PRK10942 | PRK10942 | serine endoprotease DegP; |
89-398 | 6.67e-55 | ||||||
serine endoprotease DegP; Pssm-ID: 236802 [Multi-domain] Cd Length: 473 Bit Score: 188.05 E-value: 6.67e-55
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| PRK10898 | PRK10898 | serine endoprotease DegS; |
67-398 | 5.10e-53 | ||||||
serine endoprotease DegS; Pssm-ID: 182820 [Multi-domain] Cd Length: 353 Bit Score: 179.81 E-value: 5.10e-53
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| Trypsin_2 | pfam13365 | Trypsin-like peptidase domain; This family includes trypsin-like peptidase domains. |
106-244 | 1.24e-35 | ||||||
Trypsin-like peptidase domain; This family includes trypsin-like peptidase domains. Pssm-ID: 433149 [Multi-domain] Cd Length: 142 Bit Score: 127.54 E-value: 1.24e-35
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| MarP_fam_protase | NF033740 | MarP family serine protease; The founding member of this family of membrane-spanning serine ... |
106-276 | 2.76e-21 | ||||||
MarP family serine protease; The founding member of this family of membrane-spanning serine proteases, which is restricted to Actinobacteria, is the acid resistance periplasmic serine protease MarP of Mycobacterium tuberculosis. Recent work shows that MarP is required to cleave and activate the peptidoglycan hydrolase RipA, and loss of RipA activity creates a defect in progeny separation during cell division. Therefore, the requirement for MarP in order to survive acidic conditions may be a consequence of peptidoglycan hydrolysis requirements, explaining why MarP family members are distributed more broadly in the Actinobacteria than the subset of species capable of surviving intracellularly as pathogens. Pssm-ID: 468161 [Multi-domain] Cd Length: 390 Bit Score: 94.48 E-value: 2.76e-21
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| Trypsin | pfam00089 | Trypsin; |
108-274 | 3.46e-14 | ||||||
Trypsin; Pssm-ID: 459667 [Multi-domain] Cd Length: 219 Bit Score: 71.32 E-value: 3.46e-14
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| cpPDZ_Deg_HtrA-like | cd06779 | permuted PDZ domain of Deg/high-temperature requirement factor A (HtrA) family of housekeeping ... |
285-390 | 4.25e-12 | ||||||
permuted PDZ domain of Deg/high-temperature requirement factor A (HtrA) family of housekeeping serine proteases and related domains; PDZ (PSD-95 (Postsynaptic density protein 95), Dlg (Discs large protein), and ZO-1 (Zonula occludens-1)) domain of Deg/HtrA-type serine proteases that participate in folding and degradation of aberrant proteins, and in processing and maturation of native proteins. Typically, these proteases have an N-terminal serine protease domain and at least one C-terminal PDZ domain that recognizes substrates, and in some cases activates the protease function. An exception is yeast Nma11p which has two protease domains and four PDZ domains; its N-terminal half is comprised of a protease domain, followed by two PDZ domains, and its C-terminal half has a similar domain arrangement. HtrA-type proteases include the human HtrA1-4 and MBTPS2, tricorn protease, DegS, DegP and C-terminal processing peptidase, cyanobacterial serine proteases Hhoa, HhoB, and HtrA, and yeast Nma11p. PDZ domains usually bind in a sequence-specific manner to short peptide sequences located at the C-termini of their partner proteins (known as PDZ binding motifs). The PDZ superfamily includes canonical PDZ domains and as well as those with circular permutations and domain swapping of beta-strands. The canonical PDZ domain contains six beta-strands A-F and two alpha-helices (alpha-helix 1 and 2); arranged as A, B, C, alpha-helix 1, beta-strands D, E, alpha-helix 2 and beta-strand F. This Deg/HtrA family PDZ domain is a circularly permuted PDZ domain which places beta-strand A at the C-terminus. Another permutation exists in the PDZ superfamily which places both beta-strands A and B on the C-terminus. Pssm-ID: 467621 [Multi-domain] Cd Length: 91 Bit Score: 61.93 E-value: 4.25e-12
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| cpPDZ_HhoA-like | cd10838 | circularly permuted PDZ domain of Synechocystis sp. PCC 6803 putative serine proteases HhoA, ... |
285-393 | 3.69e-07 | ||||||
circularly permuted PDZ domain of Synechocystis sp. PCC 6803 putative serine proteases HhoA, HhoB, and HtrA and related domains; PDZ (PSD-95 (Postsynaptic density protein 95), Dlg (Discs large protein), and ZO-1 (Zonula occludens-1)) domain of the cyanobacterial Synechocystis sp. PCC 6803 putative serine proteases HhoA, HhoB and HtrA, and related domains. These three proteases are functionally overlapping, and are involved in a number of key physiological responses, ranging from protection against light and heat stresses to phototaxis. HhoA assembles into trimers, mediated by its protease domain and further into a hexamer by a novel interaction between the PDZ domains of opposing trimers. PDZ domains usually bind in a sequence-specific manner to short peptide sequences located at the C-terminal of their partner proteins (known as PDZ binding motifs). The PDZ superfamily includes canonical PDZ domains and as well as those with circular permutations and domain swapping of beta-strands. The canonical PDZ domain contains six beta-strands A-F and two alpha-helices (alpha-helix 1 and 2); arranged as A, B, C, alpha-helix 1, beta-strands D, E, alpha-helix 2 and beta-strand F. This HhoA-like PDZ domain is a circularly permuted PDZ domain which places beta-strand A on the C-terminus. Another permutation exists in the PDZ superfamily which places both beta-strands A and B on the C-terminus. Pssm-ID: 467629 [Multi-domain] Cd Length: 104 Bit Score: 48.08 E-value: 3.69e-07
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| cpPDZ1_DegP-like | cd10839 | circularly permuted first PDZ domain (PDZ1) of Escherichia coli periplasmic serine ... |
285-390 | 4.13e-07 | ||||||
circularly permuted first PDZ domain (PDZ1) of Escherichia coli periplasmic serine endoprotease DegP and related domains; PDZ (PSD-95 (Postsynaptic density protein 95), Dlg (Discs large protein), and ZO-1 (Zonula occludens-1)) domain 1 of Escherichia coli DegP (also known as heat shock protein DegP and Protease Do) and related domains. DegP belongs to the HtrA family of housekeeping proteases. It acts as a protease, degrading transiently denatured and unfolded or misfolded proteins which accumulate in the periplasm following heat shock or other stress conditions, and as a molecular chaperone at low temperatures. DegP has two PDZ domains in addition to the protease domain; its PDZ1 domain is responsible for identifying the distinct substrate sequences that affect degradation (degron) of the substrate sequence, and its PDZ2 domain is responsible for combining with other DegP monomers to form a stable oligomer structure. PDZ domains usually bind in a sequence-specific manner to short peptide sequences located at the C-terminal of their partner proteins (known as PDZ binding motifs). The PDZ superfamily includes canonical PDZ domains and as well as those with circular permutations and domain swapping of beta-strands. The canonical PDZ domain contains six beta-strands A-F and two alpha-helices (alpha-helix 1 and 2); arranged as A, B, C, alpha-helix 1, beta-strands D, E, alpha-helix 2 and beta-strand F. This DegP family PDZ domain 1 is a circularly permuted PDZ domain which places beta-strand A on the C-terminus. Another permutation exists in the PDZ superfamily which places both beta-strands A and B on the C-terminus. Pssm-ID: 467630 [Multi-domain] Cd Length: 91 Bit Score: 47.48 E-value: 4.13e-07
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| PDZ_2 | pfam13180 | PDZ domain; |
345-392 | 1.05e-06 | ||||||
PDZ domain; Pssm-ID: 433015 [Multi-domain] Cd Length: 74 Bit Score: 46.11 E-value: 1.05e-06
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| eMpr | COG3591 | V8-like Glu-specific endopeptidase [Posttranslational modification, protein turnover, ... |
98-245 | 1.10e-06 | ||||||
V8-like Glu-specific endopeptidase [Posttranslational modification, protein turnover, chaperones]; Pssm-ID: 442810 [Multi-domain] Cd Length: 194 Bit Score: 48.90 E-value: 1.10e-06
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| cpPDZ_DegS | cd06777 | circularly permuted PDZ domain of DegS serine endoprotease; PDZ (PSD-95 (Postsynaptic density ... |
287-392 | 1.24e-06 | ||||||
circularly permuted PDZ domain of DegS serine endoprotease; PDZ (PSD-95 (Postsynaptic density protein 95), Dlg (Discs large protein), and ZO-1 (Zonula occludens-1)) domain of Escherichia coli DegS and related domains. DegS (also known as Site-1 protease DegS, S1P protease DegS, and Site-1-type intramembrane protease) participates in the activation of the sigma(E) extracytoplasmic stress response. Initially, there is an accumulation of misfolded membrane proteins (OMPs) in the periplasm which bind by their YXF motif to the DegS PDZ domain, activating DegS-catalyzed cleavage of the RseA periplasmic domain and making RseA a substrate for cleavage by another membrane protease RseP. PDZ domains usually bind in a sequence-specific manner to short peptide sequences located at the C-terminal of their partner proteins (known as PDZ binding motifs). The PDZ superfamily includes canonical PDZ domains and as well as those with circular permutations and domain swapping of beta-strands. The canonical PDZ domain contains six beta-strands A-F and two alpha-helices (alpha-helix 1 and 2); arranged as A, B, C, alpha-helix 1, beta-strands D, E, alpha-helix 2 and beta-strand F. This DegS family PDZ domain is a circularly permuted PDZ domain which places beta-strand A on the C-terminus. Another permutation exists in the PDZ superfamily which places both beta-strands A and B on the C-terminus. Pssm-ID: 467620 [Multi-domain] Cd Length: 93 Bit Score: 46.23 E-value: 1.24e-06
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| cpPDZ_BsHtra-like | cd06781 | circularly permuted PDZ domain of Bacillus subtilis HtrA-type serine proteases HtrA, HtrB, and ... |
345-392 | 2.56e-05 | ||||||
circularly permuted PDZ domain of Bacillus subtilis HtrA-type serine proteases HtrA, HtrB, and YyxA and related domains; PDZ (PSD-95 (Postsynaptic density protein 95), Dlg (Discs large protein), and ZO-1 (Zonula occludens-1)) domain of Bacillus subtilis HtrA/YkdA, HtrB/YvtA and YyxA/YycK, and related domains. HtrA-type serine proteases participate in folding and degradation of aberrant proteins, and in processing and maturation of native proteins. HtrA, HtrB, and YyxA have a single transmembrane domain at the N-terminus and a PDZ domain at the C-terminus. Expression of htrA and htrB genes is induced both by heat shock and by secretion stress (by a common) mechanism; yyxA is neither heat shock nor secretion stress inducible. HtrA and HtrB may have overlapping cellular functions; YyxA may have a cellular function distinct from the other two proteases or have the same function but under different conditions. PDZ domains usually bind in a sequence-specific manner to short peptide sequences located at the C-terminal of their partner proteins (known as PDZ binding motifs). The PDZ superfamily includes canonical PDZ domains and as well as those with circular permutations and domain swapping of beta-strands. The canonical PDZ domain contains six beta-strands A-F and two alpha-helices (alpha-helix 1 and 2); arranged as A, B, C, alpha-helix 1, beta-strands D, E, alpha-helix 2 and beta-strand F. This BsHtrA-like PDZ domain is a circularly permuted PDZ domain which places beta-strand A on the C-terminus. Another permutation exists in the PDZ superfamily which places both beta-strands A and B on the C-terminus. Pssm-ID: 467622 [Multi-domain] Cd Length: 98 Bit Score: 42.62 E-value: 2.56e-05
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| cpPDZ_BsYlbL-like | cd23080 | circularly permuted PDZ domain of Bacillus subtilis YlbL and related domains; Permuted PDZ ... |
345-400 | 1.73e-04 | ||||||
circularly permuted PDZ domain of Bacillus subtilis YlbL and related domains; Permuted PDZ (PSD-95 (Postsynaptic density protein 95), Dlg (Discs large protein), and ZO-1 (Zonula occludens-1)) domain of Bacillus subtilis YlbL and related domains. YlbL is an S16 protease which participates with another unrelated S41 protease (CtpA) in a dual protease mechanism that promotes DNA damage checkpoint recovery. Deletion of both proteases leads to accumulation of the cell division inhibitor YneA. PDZ domains usually bind in sequence-specific manner to short peptide sequences located at the C-terminal of their partner proteins (known as PDZ binding motifs). The PDZ superfamily includes canonical PDZ domains and as well as those with circular permutations and domain swapping of beta-strands. The canonical PDZ domain contains six beta-strands A-F and two alpha-helices (alpha-helix 1 and 2); arranged as beta-strands A, B, C, alpha-helix 1, beta-strands D, E, alpha-helix 2 and beta-strand F. This YlbL family PDZ domain is a circularly permuted PDZ domain which places both beta-strands A and B at the C-terminus. Another permutation exists in the PDZ superfamily which places beta-strand A at the C-terminus. Pssm-ID: 467637 [Multi-domain] Cd Length: 83 Bit Score: 39.79 E-value: 1.73e-04
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| cpPDZ_AtDEGP1-like | cd00990 | circularly permuted PDZ domain of Arabidopsis thaliana DEGP1, and related domains; PDZ (PSD-95 ... |
345-392 | 2.62e-04 | ||||||
circularly permuted PDZ domain of Arabidopsis thaliana DEGP1, and related domains; PDZ (PSD-95 (Postsynaptic density protein 95), Dlg (Discs large protein), and ZO-1 (Zonula occludens-1)) domain of Arabidopsis thaliana DEGP1 (also known as protease Do-like 1, chloroplastic, protein DEGRADATION OF PERIPLASMIC PROTEINS 1, DEGP PROTEASE 1 and DEG1), and related domains. DEGP1 is a serine protease that is required at high temperature and may be involved in the degradation of damaged proteins. This family also includes Arabidopsis protease DEGP8/Do-like 8 (chloroplastic), a probable serine protease. PDZ domains usually bind in a sequence-specific manner to short peptide sequences located at the C-terminal of their partner proteins (known as PDZ binding motifs). The PDZ superfamily includes canonical PDZ domains and as well as those with circular permutations and domain swapping of beta-strands. The canonical PDZ domain contains six beta-strands A-F and two alpha-helices (alpha-helix 1 and 2); arranged as A, B, C, alpha-helix 1, beta-strands D, E, alpha-helix 2 and beta-strand F. This AtDEGP-like PDZ domain is a circularly permuted PDZ domain which places beta-strand A on the C-terminus. Another permutation exists in the PDZ superfamily which places both beta-strands A and B on the C-terminus. Pssm-ID: 467618 [Multi-domain] Cd Length: 102 Bit Score: 39.87 E-value: 2.62e-04
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| cpPDZ_RseP_YlbL-like | cd10824 | circularly permuted PDZ domains of Escherichia coli Regulator of sigma-E protease (RseP), ... |
345-396 | 2.71e-04 | ||||||
circularly permuted PDZ domains of Escherichia coli Regulator of sigma-E protease (RseP), Bacillus subtilis YlbL protease, and related domains; Permuted PDZ (PSD-95 (Postsynaptic density protein 95), Dlg (Discs large protein), and ZO-1 (Zonula occludens-1)) domain of ResP (also known as Site-2 protease RseP, and YaeL), Bacillus subtilis YlbL, and related domains, including archaeal and chloroplast PDZ domains. RseP participates in the regulation of an extracytoplasmic stress response through the cleavage of membrane-spanning anti-stress-response transcription factor (anti-sigmaE) protein RseA. YlbL is an S16 protease which participates with another unrelated S41 protease (CtpA) in a dual protease mechanism that promotes DNA damage checkpoint recovery. PDZ domains usually bind in a sequence-specific manner to short peptide sequences located at the C-terminal of their partner proteins (known as PDZ binding motifs). The PDZ superfamily includes canonical PDZ domains and as well as those with circular permutations and domain swapping of beta-strands. The canonical PDZ domain contains six beta-strands A-F and two alpha-helices (alpha-helix 1 and 2); arranged as beta-strands A, B, C, alpha-helix 1, beta-strands D, E, alpha-helix 2 and beta-strand F. This RseP-YlbL family PDZ domain is a circularly permuted PDZ domain which places both beta-strands A and B at the C-terminus. Another permutation exists in the PDZ superfamily which places beta-strand A at the C-terminus. Pssm-ID: 467636 [Multi-domain] Cd Length: 82 Bit Score: 39.48 E-value: 2.71e-04
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| cpPDZ_EcRseP-like | cd23081 | circularly permuted PDZ domains of Escherichia coli Regulator of sigma-E protease (RseP) and ... |
345-391 | 1.17e-03 | ||||||
circularly permuted PDZ domains of Escherichia coli Regulator of sigma-E protease (RseP) and related domains; Permuted PDZ (PSD-95 (Postsynaptic density protein 95), Dlg (Discs large protein), and ZO-1 (Zonula occludens-1)) domain of ResP (also known as Site-2 protease RseP, and YaeL), and related domains. RseP is involved in the regulation of an extracytoplasmic stress response through the cleavage of membrane-spanning anti-stress-response transcription factor (anti-sigmE) protein RseA; it cleaves the peptide bond between the critical alanine and cysteine in the transmembrane region of RseA, releasing the cytoplasmic domain of RseA with its associated sigmaE. RseP contains two tandem-arranged periplasmic PDZ domains (PDZ-N/PDZ1 and PDZ-C/PDZ2) which act to negatively regulate protease action on intact RseA; they serve as a size-exclusion filter which prevents the access of an intact RseA into the active site of RseP. PDZ domains usually bind in sequence-specific manner to short peptide sequences located at the C-terminal of their partner proteins (known as PDZ binding motifs). The PDZ superfamily includes canonical PDZ domains and as well as those with circular permutations and domain swapping of beta-strands. The canonical PDZ domain contains six beta-strands A-F and two alpha-helices (alpha-helix 1 and 2); arranged as beta-strands A, B, C, alpha-helix 1, beta-strands D, E, alpha-helix 2 and beta-strand F. This RseP family PDZ domain is a circularly permuted PDZ domain which places both beta-strands A and B at the C-terminus. Another permutation exists in the PDZ superfamily which places beta-strand A at the C-terminus. Pssm-ID: 467638 [Multi-domain] Cd Length: 83 Bit Score: 37.56 E-value: 1.17e-03
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