Type II (periplasmic) bacterial L-asparaginase; Asparaginases (amidohydrolases, E.C. 3.5.1.1) ...
54-353
1.80e-133
Type II (periplasmic) bacterial L-asparaginase; Asparaginases (amidohydrolases, E.C. 3.5.1.1) are enzymes that catalyze the hydrolysis of asparagine to aspartic acid and ammonia. In bacteria, there are two classes of amidohydrolases. This model represents type II L-asparaginases, which tend to be highly specific for asparagine and localized to the periplasm. They are potent antileukemic agents and have been used in the treatment of acute lymphoblastic leukemia (ALL), but not without severe side effects. Tumor cells appear to have a heightened dependence on exogenous L-aspartate, and depleting their surroundings of L-aspartate may starve cancerous ALL cells. Type II L-asparaginase acts as a tetramer, which is actually a dimer of two tightly bound dimers. A conserved threonine residue is thought to supply the nucleophile hydroxy-group that attacks the amide bond. Many bacterial L-asparaginases have both L-asparagine and L-glutamine hydrolysis activities, to a different degree, and some of them are annotated as asparaginase/glutaminase.
:
Pssm-ID: 199208 [Multi-domain] Cd Length: 319 Bit Score: 384.17 E-value: 1.80e-133
Type II (periplasmic) bacterial L-asparaginase; Asparaginases (amidohydrolases, E.C. 3.5.1.1) ...
54-353
1.80e-133
Type II (periplasmic) bacterial L-asparaginase; Asparaginases (amidohydrolases, E.C. 3.5.1.1) are enzymes that catalyze the hydrolysis of asparagine to aspartic acid and ammonia. In bacteria, there are two classes of amidohydrolases. This model represents type II L-asparaginases, which tend to be highly specific for asparagine and localized to the periplasm. They are potent antileukemic agents and have been used in the treatment of acute lymphoblastic leukemia (ALL), but not without severe side effects. Tumor cells appear to have a heightened dependence on exogenous L-aspartate, and depleting their surroundings of L-aspartate may starve cancerous ALL cells. Type II L-asparaginase acts as a tetramer, which is actually a dimer of two tightly bound dimers. A conserved threonine residue is thought to supply the nucleophile hydroxy-group that attacks the amide bond. Many bacterial L-asparaginases have both L-asparagine and L-glutamine hydrolysis activities, to a different degree, and some of them are annotated as asparaginase/glutaminase.
Pssm-ID: 199208 [Multi-domain] Cd Length: 319 Bit Score: 384.17 E-value: 1.80e-133
Asparaginase, found in various plant, animal and bacterial cells; Asparaginase catalyses the ...
56-353
8.01e-119
Asparaginase, found in various plant, animal and bacterial cells; Asparaginase catalyses the deamination of asparagine to yield aspartic acid and an ammonium ion, resulting in a depletion of free circulatory asparagine in plasma. The enzyme is effective in the treatment of human malignant lymphomas, which have a diminished capacity to produce asparagine synthetase: in order to survive, such cells absorb asparagine from blood plasma..- if Asn levels have been depleted by injection of asparaginase, the lymphoma cells die.
Pssm-ID: 214873 [Multi-domain] Cd Length: 323 Bit Score: 347.20 E-value: 8.01e-119
L-asparaginase, type II; Two related families of asparaginase (L-asparagine amidohydrolase, EC ...
53-353
1.27e-112
L-asparaginase, type II; Two related families of asparaginase (L-asparagine amidohydrolase, EC 3.5.1.1) are designated type I and type II according to the terminology in E. coli, which has both: L-asparaginase I is a low-affinity enzyme found in the cytoplasm, while L-asparaginase II is a high-affinity periplasmic enzyme synthesized with a cleavable signal sequence. This model describes L-asparaginases related to type II of E. coli. Both the cytoplasmic and the cell wall asparaginases of Saccharomyces cerevisiae belong to this set. Members of this set from Acinetobacter glutaminasificans and Pseudomonas fluorescens are described as having both glutaminase and asparaginase activitities. All members are homotetrameric. [Energy metabolism, Amino acids and amines]
Pssm-ID: 273115 [Multi-domain] Cd Length: 349 Bit Score: 332.50 E-value: 1.27e-112
Type II (periplasmic) bacterial L-asparaginase; Asparaginases (amidohydrolases, E.C. 3.5.1.1) ...
54-353
1.80e-133
Type II (periplasmic) bacterial L-asparaginase; Asparaginases (amidohydrolases, E.C. 3.5.1.1) are enzymes that catalyze the hydrolysis of asparagine to aspartic acid and ammonia. In bacteria, there are two classes of amidohydrolases. This model represents type II L-asparaginases, which tend to be highly specific for asparagine and localized to the periplasm. They are potent antileukemic agents and have been used in the treatment of acute lymphoblastic leukemia (ALL), but not without severe side effects. Tumor cells appear to have a heightened dependence on exogenous L-aspartate, and depleting their surroundings of L-aspartate may starve cancerous ALL cells. Type II L-asparaginase acts as a tetramer, which is actually a dimer of two tightly bound dimers. A conserved threonine residue is thought to supply the nucleophile hydroxy-group that attacks the amide bond. Many bacterial L-asparaginases have both L-asparagine and L-glutamine hydrolysis activities, to a different degree, and some of them are annotated as asparaginase/glutaminase.
Pssm-ID: 199208 [Multi-domain] Cd Length: 319 Bit Score: 384.17 E-value: 1.80e-133
Asparaginase, found in various plant, animal and bacterial cells; Asparaginase catalyses the ...
56-353
8.01e-119
Asparaginase, found in various plant, animal and bacterial cells; Asparaginase catalyses the deamination of asparagine to yield aspartic acid and an ammonium ion, resulting in a depletion of free circulatory asparagine in plasma. The enzyme is effective in the treatment of human malignant lymphomas, which have a diminished capacity to produce asparagine synthetase: in order to survive, such cells absorb asparagine from blood plasma..- if Asn levels have been depleted by injection of asparaginase, the lymphoma cells die.
Pssm-ID: 214873 [Multi-domain] Cd Length: 323 Bit Score: 347.20 E-value: 8.01e-119
L-asparaginase, type II; Two related families of asparaginase (L-asparagine amidohydrolase, EC ...
53-353
1.27e-112
L-asparaginase, type II; Two related families of asparaginase (L-asparagine amidohydrolase, EC 3.5.1.1) are designated type I and type II according to the terminology in E. coli, which has both: L-asparaginase I is a low-affinity enzyme found in the cytoplasm, while L-asparaginase II is a high-affinity periplasmic enzyme synthesized with a cleavable signal sequence. This model describes L-asparaginases related to type II of E. coli. Both the cytoplasmic and the cell wall asparaginases of Saccharomyces cerevisiae belong to this set. Members of this set from Acinetobacter glutaminasificans and Pseudomonas fluorescens are described as having both glutaminase and asparaginase activitities. All members are homotetrameric. [Energy metabolism, Amino acids and amines]
Pssm-ID: 273115 [Multi-domain] Cd Length: 349 Bit Score: 332.50 E-value: 1.27e-112
Bacterial L-asparaginases and related enzymes; Asparaginases (amidohydrolases, E.C. 3.5.1.1) ...
54-371
3.99e-91
Bacterial L-asparaginases and related enzymes; Asparaginases (amidohydrolases, E.C. 3.5.1.1) are dimeric or tetrameric enzymes that catalyze the hydrolysis of asparagine to aspartic acid and ammonia. In bacteria, there are two classes of amidohydrolases, one highly specific for asparagine and localized to the periplasm (type II L-asparaginase), and a second (asparaginase- glutaminase) present in the cytosol (type I L-asparaginase) that hydrolyzes both asparagine and glutamine with similar specificities and has a lower affinity for its substrate. Bacterial L-asparaginases (type II) are potent antileukemic agents and have been used in the treatment of acute lymphoblastic leukemia (ALL). A conserved threonine residue is thought to supply the nucleophile hydroxy-group that attacks the amide bond. Many bacterial L-asparaginases have both L-asparagine and L-glutamine hydrolysis activities, to a different degree, and some of them are annotated as asparaginase/glutaminase. This wider family also includes a subunit of an archaeal Glu-tRNA amidotransferase.
Pssm-ID: 199205 [Multi-domain] Cd Length: 320 Bit Score: 276.70 E-value: 3.99e-91
L-asparaginase, type I; Two related families of asparaginase are designated type I and type II ...
53-332
1.36e-42
L-asparaginase, type I; Two related families of asparaginase are designated type I and type II according to the terminology in E. coli, which has both: L-asparaginase I is a low-affinity enzyme found in the cytoplasm, while L-asparaginase II is a high-affinity secreted enzyme synthesized with a cleavable signal sequence. This model describes L-asparaginases related to type I of E. coli. Archaeal putative asparaginases are of this type but contain an extra ~ 80 residues in a conserved N-terminal region. These archaeal homologs are included in this model.
Pssm-ID: 129610 [Multi-domain] Cd Length: 336 Bit Score: 151.51 E-value: 1.36e-42
GatD subunit of archaeal Glu-tRNA amidotransferase; GatD is involved in the alternative ...
53-332
1.55e-39
GatD subunit of archaeal Glu-tRNA amidotransferase; GatD is involved in the alternative synthesis of Gln-tRNA(Gln) in archaea via the transamidation of incorrectly charged Glu-tRNA(Gln). GatD is active as a dimer, and it provides the amino group required for this reaction. GatD is related to bacterial L-asparaginases (amidohydrolases), which catalyze the hydrolysis of asparagine to aspartic acid and ammonia. This CD spans both the L-asparaginase_like domain and an N-terminal supplementary domain.
Pssm-ID: 199206 [Multi-domain] Cd Length: 402 Bit Score: 145.07 E-value: 1.55e-39
Type I (cytosolic) bacterial L-asparaginase; Asparaginases (amidohydrolases, E.C. 3.5.1.1) are ...
54-349
3.17e-39
Type I (cytosolic) bacterial L-asparaginase; Asparaginases (amidohydrolases, E.C. 3.5.1.1) are enzymes that catalyze the hydrolysis of asparagine to aspartic acid and ammonia. In bacteria, there are two classes of amidohydrolases. This model represents type I L-asparaginases, which are highly specific for asparagine and localized in the cytosol. Type I L-asparaginase acts as a dimer. A conserved threonine residue is thought to supply the nucleophile hydroxy-group that attacks the amide bond. Many bacterial L-asparaginases have both L-asparagine and L-glutamine hydrolysis activities, to a different degree, and some of them are annotated as asparaginase/glutaminase. One example of an enzyme with no L-glutaminase activity is the type I L-asparaginase from Wolinella succinogenes.
Pssm-ID: 199207 [Multi-domain] Cd Length: 316 Bit Score: 141.95 E-value: 3.17e-39
glutamyl-tRNA(Gln) amidotransferase, subunit D; This peptide is found only in the Archaea. It ...
53-332
3.23e-38
glutamyl-tRNA(Gln) amidotransferase, subunit D; This peptide is found only in the Archaea. It is part of a heterodimer, with GatE (TIGR00134), that acts as an amidotransferase on misacylated Glu-tRNA(Gln) to produce Gln-tRNA(Gln). The analogous amidotransferase found in bacteria is the GatABC system, although GatABC homologs in the Archaea appear to act instead on Asp-tRNA(Asn). [Protein synthesis, tRNA aminoacylation]
Pssm-ID: 274001 [Multi-domain] Cd Length: 404 Bit Score: 141.36 E-value: 3.23e-38
periplasmic sugar-binding domain of active transport systems that are members of the type 1 ...
264-344
1.23e-04
periplasmic sugar-binding domain of active transport systems that are members of the type 1 periplasmic binding protein (PBP1) superfamily; Periplasmic sugar-binding domain of active transport systems that are members of the type 1 periplasmic binding protein (PBP1) superfamily. The members of this family function as the primary receptors for chemotaxis and transport of many sugar based solutes in bacteria and archaea. The sugar binding domain is also homologous to the ligand-binding domain of eukaryotic receptors such as glutamate receptor (GluR) and DNA-binding transcriptional repressors such as LacI and GalR. Moreover, this periplasmic binding domain, also known as Venus flytrap domain, undergoes transition from an open to a closed conformational state upon the binding of ligands such as lactose, ribose, fructose, xylose, arabinose, galactose/glucose, and other sugars. This family also includes the periplasmic binding domain of autoinducer-2 (AI-2) receptors such as LsrB and LuxP which are highly homologous to periplasmic pentose/hexose sugar-binding proteins.
Pssm-ID: 380478 [Multi-domain] Cd Length: 268 Bit Score: 43.32 E-value: 1.23e-04
Periplasmic binding protein domain; This domain is found in a variety of bacterial periplasmic ...
277-318
8.06e-03
Periplasmic binding protein domain; This domain is found in a variety of bacterial periplasmic binding proteins. This domain recognizes fructose (Matilla et. al., FEMS Microbiology Reviews, fuab043, 45, 2021, 1. https://doi.org/10.1093/femsre/fuab043).
Pssm-ID: 433182 [Multi-domain] Cd Length: 259 Bit Score: 37.67 E-value: 8.06e-03
Database: CDSEARCH/cdd Low complexity filter: no Composition Based Adjustment: yes E-value threshold: 0.01
References:
Wang J et al. (2023), "The conserved domain database in 2023", Nucleic Acids Res.51(D)384-8.
Lu S et al. (2020), "The conserved domain database in 2020", Nucleic Acids Res.48(D)265-8.
Marchler-Bauer A et al. (2017), "CDD/SPARCLE: functional classification of proteins via subfamily domain architectures.", Nucleic Acids Res.45(D)200-3.
of the residues that compose this conserved feature have been mapped to the query sequence.
Click on the triangle to view details about the feature, including a multiple sequence alignment
of your query sequence and the protein sequences used to curate the domain model,
where hash marks (#) above the aligned sequences show the location of the conserved feature residues.
The thumbnail image, if present, provides an approximate view of the feature's location in 3 dimensions.
Click on the triangle for interactive 3D structure viewing options.
Functional characterization of the conserved domain architecture found on the query.
Click here to see more details.
This image shows a graphical summary of conserved domains identified on the query sequence.
The Show Concise/Full Display button at the top of the page can be used to select the desired level of detail: only top scoring hits
(labeled illustration) or all hits
(labeled illustration).
Domains are color coded according to superfamilies
to which they have been assigned. Hits with scores that pass a domain-specific threshold
(specific hits) are drawn in bright colors.
Others (non-specific hits) and
superfamily placeholders are drawn in pastel colors.
if a domain or superfamily has been annotated with functional sites (conserved features),
they are mapped to the query sequence and indicated through sets of triangles
with the same color and shade of the domain or superfamily that provides the annotation. Mouse over the colored bars or triangles to see descriptions of the domains and features.
click on the bars or triangles to view your query sequence embedded in a multiple sequence alignment of the proteins used to develop the corresponding domain model.
The table lists conserved domains identified on the query sequence. Click on the plus sign (+) on the left to display full descriptions, alignments, and scores.
Click on the domain model's accession number to view the multiple sequence alignment of the proteins used to develop the corresponding domain model.
To view your query sequence embedded in that multiple sequence alignment, click on the colored bars in the Graphical Summary portion of the search results page,
or click on the triangles, if present, that represent functional sites (conserved features)
mapped to the query sequence.
Concise Display shows only the best scoring domain model, in each hit category listed below except non-specific hits, for each region on the query sequence.
(labeled illustration) Standard Display shows only the best scoring domain model from each source, in each hit category listed below for each region on the query sequence.
(labeled illustration) Full Display shows all domain models, in each hit category below, that meet or exceed the RPS-BLAST threshold for statistical significance.
(labeled illustration) Four types of hits can be shown, as available,
for each region on the query sequence:
specific hits meet or exceed a domain-specific e-value threshold
(illustrated example)
and represent a very high confidence that the query sequence belongs to the same protein family as the sequences use to create the domain model
non-specific hits
meet or exceed the RPS-BLAST threshold for statistical significance (default E-value cutoff of 0.01, or an E-value selected by user via the
advanced search options)
the domain superfamily to which the specific and non-specific hits belong
multi-domain models that were computationally detected and are likely to contain multiple single domains
Retrieve proteins that contain one or more of the domains present in the query sequence, using the Conserved Domain Architecture Retrieval Tool
(CDART).
Modify your query to search against a different database and/or use advanced search options
