SpaH/EbpB family LPXTG-anchored major pilin; Members of this family are pilin major subunits ...
1-488
7.39e-38
SpaH/EbpB family LPXTG-anchored major pilin; Members of this family are pilin major subunits whose structure includes an LPXTG motif-containing signal (see TIGR01167) near the C-terminus, for processing by sortases. Most contain a recognizable D2-type fimbrial isopeptide formation domain (see TIGR04226), in which Lys-to-Asn isopeptide bond formation provides additional structural integrity to support adhesion despite shear. For proper members of this subfamily, lengths fall typically in the range of 460 to 640 amino acids in length. Many members of this family contribute to the virulence of certain Gram-positive pathogens, including SpaA, SpaD, and SpaH from Corynebacterium diphtheriae, and EbpB and EbpC from Enterococcus faecalis.
The actual alignment was detected with superfamily member NF033902:
Pssm-ID: 468234 [Multi-domain] Cd Length: 533 Bit Score: 145.28 E-value: 7.39e-38
SpaH/EbpB family LPXTG-anchored major pilin; Members of this family are pilin major subunits ...
1-488
7.39e-38
SpaH/EbpB family LPXTG-anchored major pilin; Members of this family are pilin major subunits whose structure includes an LPXTG motif-containing signal (see TIGR01167) near the C-terminus, for processing by sortases. Most contain a recognizable D2-type fimbrial isopeptide formation domain (see TIGR04226), in which Lys-to-Asn isopeptide bond formation provides additional structural integrity to support adhesion despite shear. For proper members of this subfamily, lengths fall typically in the range of 460 to 640 amino acids in length. Many members of this family contribute to the virulence of certain Gram-positive pathogens, including SpaA, SpaD, and SpaH from Corynebacterium diphtheriae, and EbpB and EbpC from Enterococcus faecalis.
Pssm-ID: 468234 [Multi-domain] Cd Length: 533 Bit Score: 145.28 E-value: 7.39e-38
Gram-positive pilin subunit D1, N-terminal domain; GramPos_pilinD1 is the first subunit domain ...
32-188
2.32e-33
Gram-positive pilin subunit D1, N-terminal domain; GramPos_pilinD1 is the first subunit domain of Gram-positive pilins from Strep.pneumoniae. There are three major pilin subunits that form the polymeric backbone of the pilin from S. pneumoniae, constructed of three Ig-like, CnaB, domains along with a crucial N-terminal domain, D1. The three IG-like domains are stabilized by internal Lys-Asn isopeptide bonds, but this N-terminal domain makes few contact with the rest of the molecule due to the different orientation of its G beta-strand. Strand G of D1 also carries the YPKN motif that provides the essential Lys residue for the sortase-mediated intermolecular linkages along the pilus shaft. Gram-positive pili are formed from a single chain of covalently linked subunit proteins (pilins), usually comprising an adhesin at the distal tip, a major pilin that forms the polymer shaft and a minor pilin that mediates cell wall anchoring at the base.
Pssm-ID: 465172 Cd Length: 161 Bit Score: 124.06 E-value: 2.32e-33
fimbrial isopeptide formation D2 domain; The Streptococcus Pneumoniae pilus backbone protein, RrgB, has three tandem domains with Lys-to-Asn isopeptide bonds, but these three regions are extremely divergent in sequence. This model represents the homology domain family of the D2 domain. It occurs just once in many surface proteins but up to twenty times in some pilin subunit proteins. Three of every four members have the typical Gram-positive C-terminal motif, LPXTG, although in many cases this motif may be involved in pilin subunit cross-linking rather than cell wall attachment. Proteins with this domain include fimbrial proteins with lectin-like adhesion functions, and the majority of characterized members are involved in surface adhesion to host structures.
Pssm-ID: 275067 [Multi-domain] Cd Length: 124 Bit Score: 55.73 E-value: 1.47e-09
SpaH/EbpB family LPXTG-anchored major pilin; Members of this family are pilin major subunits ...
1-488
7.39e-38
SpaH/EbpB family LPXTG-anchored major pilin; Members of this family are pilin major subunits whose structure includes an LPXTG motif-containing signal (see TIGR01167) near the C-terminus, for processing by sortases. Most contain a recognizable D2-type fimbrial isopeptide formation domain (see TIGR04226), in which Lys-to-Asn isopeptide bond formation provides additional structural integrity to support adhesion despite shear. For proper members of this subfamily, lengths fall typically in the range of 460 to 640 amino acids in length. Many members of this family contribute to the virulence of certain Gram-positive pathogens, including SpaA, SpaD, and SpaH from Corynebacterium diphtheriae, and EbpB and EbpC from Enterococcus faecalis.
Pssm-ID: 468234 [Multi-domain] Cd Length: 533 Bit Score: 145.28 E-value: 7.39e-38
Gram-positive pilin subunit D1, N-terminal domain; GramPos_pilinD1 is the first subunit domain ...
32-188
2.32e-33
Gram-positive pilin subunit D1, N-terminal domain; GramPos_pilinD1 is the first subunit domain of Gram-positive pilins from Strep.pneumoniae. There are three major pilin subunits that form the polymeric backbone of the pilin from S. pneumoniae, constructed of three Ig-like, CnaB, domains along with a crucial N-terminal domain, D1. The three IG-like domains are stabilized by internal Lys-Asn isopeptide bonds, but this N-terminal domain makes few contact with the rest of the molecule due to the different orientation of its G beta-strand. Strand G of D1 also carries the YPKN motif that provides the essential Lys residue for the sortase-mediated intermolecular linkages along the pilus shaft. Gram-positive pili are formed from a single chain of covalently linked subunit proteins (pilins), usually comprising an adhesin at the distal tip, a major pilin that forms the polymer shaft and a minor pilin that mediates cell wall anchoring at the base.
Pssm-ID: 465172 Cd Length: 161 Bit Score: 124.06 E-value: 2.32e-33
fimbrial isopeptide formation D2 domain; The Streptococcus Pneumoniae pilus backbone protein, RrgB, has three tandem domains with Lys-to-Asn isopeptide bonds, but these three regions are extremely divergent in sequence. This model represents the homology domain family of the D2 domain. It occurs just once in many surface proteins but up to twenty times in some pilin subunit proteins. Three of every four members have the typical Gram-positive C-terminal motif, LPXTG, although in many cases this motif may be involved in pilin subunit cross-linking rather than cell wall attachment. Proteins with this domain include fimbrial proteins with lectin-like adhesion functions, and the majority of characterized members are involved in surface adhesion to host structures.
Pssm-ID: 275067 [Multi-domain] Cd Length: 124 Bit Score: 55.73 E-value: 1.47e-09
Gram-positive pilin backbone subunit 2, Cna-B-like domain; GramPos_pilinBB is one of the major ...
220-329
1.06e-07
Gram-positive pilin backbone subunit 2, Cna-B-like domain; GramPos_pilinBB is one of the major backbone units of Gram-positive pili, such as those from S.pneumoniae. There are three major pilin subunits that form the polymeric backbone of the pilin from S. pneumoniae, constructed of three transthyretin-like, CnaB, domains along with a crucial N-terminal domain, D1. The three Cna-B like domains are stabilized by internal Lys-Asn isopeptdie bonds, Gram-positive pili are formed from a single chain of covalently linked subunit proteins (pilins), usually comprising an adhesin at the distal tip, a major pilin that forms the polymer shaft and a minor pilin that mediates cell wall anchoring at the base.
Pssm-ID: 435436 Cd Length: 114 Bit Score: 50.09 E-value: 1.06e-07
Prealbumin-like fold domain; This entry contains a prealbumin-like domain from a wide variety ...
352-443
3.54e-05
Prealbumin-like fold domain; This entry contains a prealbumin-like domain from a wide variety of bacterial surface proteins. This entry corresponds to domain 1 and domain 3 of SpaA from Corynebacterium diphtheriae. Some members of this family contain an isopeptide bond.
Pssm-ID: 465513 [Multi-domain] Cd Length: 72 Bit Score: 41.80 E-value: 3.54e-05
LPXTG-motif cell wall anchor domain; This model describes the LPXTG motif-containing region ...
460-490
1.66e-03
LPXTG-motif cell wall anchor domain; This model describes the LPXTG motif-containing region found at the C-terminus of many surface proteins of Streptococcus and Streptomyces species. Cleavage between the Thr and Gly by sortase or a related enzyme leads to covalent anchoring at the new C-terminal Thr to the cell wall. Hits that do not lie at the C-terminus or are not found in Gram-positive bacteria are probably false-positive. A common feature of this proteins containing this domain appears to be a high proportion of charged and zwitterionic residues immediatedly upstream of the LPXTG motif. This model differs from other descriptions of the LPXTG region by including a portion of that upstream charged region. [Cell envelope, Other]
Pssm-ID: 273478 [Multi-domain] Cd Length: 34 Bit Score: 35.91 E-value: 1.66e-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
