M42 family metallopeptidase is an aminopeptidase similar to Escherichia coli aminopeptidase YpdE that has a broad aminopeptidase activity on non-blocked peptides by progressively cleaving amino acids off the peptide substrate
M42 Peptidases, also known as glutamyl aminopeptidase family; Peptidase M42 family proteins, ...
4-329
1.45e-162
M42 Peptidases, also known as glutamyl aminopeptidase family; Peptidase M42 family proteins, also known as glutamyl aminopeptidases (GAP), are co-catalytic metallopeptidases, found in archaea and bacteria. They typically bind two zinc or cobalt atoms and include cellulase and endo-1,4-beta-glucanase (endoglucanase). Some of the enzymes exhibit typical aminopeptidase specificity, whereas others are also capable of N-terminal deblocking activity, i.e. hydrolyzing acylated N-terminal residues. GAP removes glutamyl residues from the N-terminus of peptide substrates, but is also effective against aspartyl and, to a lesser extent, seryl residues. Lactococcus lactis glutamyl aminopeptidase (PepA; aminopeptidase A) has high thermal stability and aids growth of the organism in milk. Pyrococcus horikoshii contain a thermostable de-blocking aminopeptidase member of this family, used commercially for N-terminal protein sequencing.
Pssm-ID: 193517 [Multi-domain] Cd Length: 332 Bit Score: 457.31 E-value: 1.45e-162
M42 glutamyl aminopeptidase; These peptidases are found in Archaea and Bacteria. The example ...
43-325
7.55e-111
M42 glutamyl aminopeptidase; These peptidases are found in Archaea and Bacteria. The example in Lactococcus lactis, PepA, aids growth on milk. Pyrococcus horikoshii contain a thermostable de-blocking aminopeptidase member of this family used commercially for N-terminal protein sequencing.
Pssm-ID: 428431 [Multi-domain] Cd Length: 292 Bit Score: 324.53 E-value: 7.55e-111
glutamyl aminopeptidase; This model represents the M42.001 clade within MEROPS family M42. M42 ...
6-338
1.04e-60
glutamyl aminopeptidase; This model represents the M42.001 clade within MEROPS family M42. M42 includes glutamyl aminopeptidase as in the present model, deblocking aminopeptidases as from Pyrococcus horikoshii and related species, and endo-1,4-beta-glucanase (cellulase M) as from Clostridium thermocellum. The current family includes [Protein fate, Degradation of proteins, peptides, and glycopeptides]
Pssm-ID: 132151 Cd Length: 350 Bit Score: 198.11 E-value: 1.04e-60
M42 Peptidases, also known as glutamyl aminopeptidase family; Peptidase M42 family proteins, ...
4-329
1.45e-162
M42 Peptidases, also known as glutamyl aminopeptidase family; Peptidase M42 family proteins, also known as glutamyl aminopeptidases (GAP), are co-catalytic metallopeptidases, found in archaea and bacteria. They typically bind two zinc or cobalt atoms and include cellulase and endo-1,4-beta-glucanase (endoglucanase). Some of the enzymes exhibit typical aminopeptidase specificity, whereas others are also capable of N-terminal deblocking activity, i.e. hydrolyzing acylated N-terminal residues. GAP removes glutamyl residues from the N-terminus of peptide substrates, but is also effective against aspartyl and, to a lesser extent, seryl residues. Lactococcus lactis glutamyl aminopeptidase (PepA; aminopeptidase A) has high thermal stability and aids growth of the organism in milk. Pyrococcus horikoshii contain a thermostable de-blocking aminopeptidase member of this family, used commercially for N-terminal protein sequencing.
Pssm-ID: 193517 [Multi-domain] Cd Length: 332 Bit Score: 457.31 E-value: 1.45e-162
M42 Peptidase, endoglucanases; Peptidase M42 family, Frv (Frv Operon Protein; Endo-1 4-Beta-Glucanase; Cellulase Protein; Endoglucanase; Endo-1 4-Beta-Glucanase Homolog; Glucanase; EC. 3.2.1.4) subfamily. Frv is a co-catalytic metallopeptidase, found in archaea and bacteria, including Pyrococcus horikoshii tetrahedral shaped phTET1 (DAPPh1; FrvX; PhDAP aminopeptidase; PhTET aminopeptidase; deblocking aminopeptidase), phTET2 (DAPPh2) and phTET3 (DAPPh3), Haloarcula marismortui TET (HmTET) as well as Bacillus subtilis YsdC. All of these exhibit aminopeptidase and deblocking activities. The HmTET is a broad substrate aminopeptidase capable of degrading large peptides. PhTET2, which shares 24% identity with HmTET, is a cobalt-activated peptidase and possibly a deblocking aminopeptidase, assembled as a 12-subunit tetrahedral dodecamer, while PhTET1 can be alternatively assembled as a tetrahedral dodecamer or as an octahedral tetracosameric structure. The active site in such a self-compartmentalized complex is located on the inside such that substrate sizes are limited, indicating function as possible peptide scavengers. PhTET2 cleaves polypeptides by a nonprocessive mechanism, preferring N-terminal hydrophobic or uncharged polar amino acids. Streptococcus pneumoniae PepA (SpPepA) also forms dodecamer with tetrahedral architecture, and exhibits selective substrate specificity to acidic amino acids with the preference to glutamic acid, with the substrate binding S1 pocket containing an Arg allows electrostatic interactions with the N-terminal acidic residue in the substrate. The YsdC gene is conserved in a number of thermophiles, archaea and pathogenic bacterial species; the closest structural homolog is Thermotoga maritima FrwX (34% identity), which is annotated as either a cellulase or an endoglucanase, and is possibly involved in polysaccharide biosynthesis or degradation.
Pssm-ID: 349906 [Multi-domain] Cd Length: 337 Bit Score: 397.70 E-value: 4.29e-139
M42 glutamyl aminopeptidase; These peptidases are found in Archaea and Bacteria. The example ...
43-325
7.55e-111
M42 glutamyl aminopeptidase; These peptidases are found in Archaea and Bacteria. The example in Lactococcus lactis, PepA, aids growth on milk. Pyrococcus horikoshii contain a thermostable de-blocking aminopeptidase member of this family used commercially for N-terminal protein sequencing.
Pssm-ID: 428431 [Multi-domain] Cd Length: 292 Bit Score: 324.53 E-value: 7.55e-111
glutamyl aminopeptidase; This model represents the M42.001 clade within MEROPS family M42. M42 ...
6-338
1.04e-60
glutamyl aminopeptidase; This model represents the M42.001 clade within MEROPS family M42. M42 includes glutamyl aminopeptidase as in the present model, deblocking aminopeptidases as from Pyrococcus horikoshii and related species, and endo-1,4-beta-glucanase (cellulase M) as from Clostridium thermocellum. The current family includes [Protein fate, Degradation of proteins, peptides, and glycopeptides]
Pssm-ID: 132151 Cd Length: 350 Bit Score: 198.11 E-value: 1.04e-60
M42 Peptidase, endoglucanase-like subfamily; Peptidase M42 family, glucanase (endo-1,4-beta-glucanase or endoglucanase)-like subfamily. Proteins in this subfamily are co-catalytic metallopeptidases, found in archaea and bacteria. They show similarity to cellulase and endo-1,4-beta-glucanase (endoglucanase) which typically bind two zinc or cobalt atoms. Some of the enzymes exhibit typical aminopeptidase specificity, whereas others are also capable of N-terminal deblocking activity, i.e. hydrolyzing acylated N-terminal residues. Many of these enzymes are assembled either as tetrahedral dodecamers or as octahedral tetracosameric structures, with the active site located on the inside such that substrate sizes are limited, indicating function as possible peptide scavengers.
Pssm-ID: 349907 [Multi-domain] Cd Length: 337 Bit Score: 101.58 E-value: 2.48e-24
M18 peptidase aminopeptidase family; Peptidase M18 aminopeptidase family is widely distributed ...
166-329
6.60e-07
M18 peptidase aminopeptidase family; Peptidase M18 aminopeptidase family is widely distributed in bacteria and eukaryotes, but only the yeast aminopeptidase I and mammalian aspartyl aminopeptidase have been characterized to date. Yeast aminopeptidase I is active only in its dodecameric form with broad substrate specificity, acting on N-terminal leucine and most other amino acids. In contrast, the mammalian aspartyl aminopeptidase is highly selective for hydrolysis of N-terminal Asp or Glu residues from peptides. These enzymes have two catalytic zinc ions at the active site.
Pssm-ID: 349892 Cd Length: 430 Bit Score: 50.61 E-value: 6.60e-07
M20 Peptidases with similarity to acetylornithine deacetylases and succinyl-diaminopimelate ...
3-66
4.02e-03
M20 Peptidases with similarity to acetylornithine deacetylases and succinyl-diaminopimelate desuccinylases; Peptidase M20 family, uncharacterized protein subfamily with similarity to acetylornithine deacetylase/succinyl-diaminopimelate desuccinylase (ArgE/DapE) subfamily. ArgE/DapE enzymes catalyze analogous reactions and share a common activator, the metal ion (usually Co2+ or Zn2+). ArgE catalyzes a broad range of substrates, including N-acetylornithine, alpha-N-acetylmethionine and alpha-N-formylmethionine, while DapE catalyzes the hydrolysis of N-succinyl-L,L-diaminopimelate (L,L-SDAP) to L,L-diaminopimelate and succinate. Proteins in this subfamily are mostly fungal, and have been inferred by similarity as being related to both ArgE and DapE.
Pssm-ID: 349903 [Multi-domain] Cd Length: 340 Bit Score: 38.79 E-value: 4.02e-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
