helix-rich Mycoplasma protein; Members of this family occur strictly within a subset of ...
338-608
1.18e-06
helix-rich Mycoplasma protein; Members of this family occur strictly within a subset of Mycoplasma species. Members average 750 amino acids in length, including signal peptide. Sequences are predicted (Jpred 3) to be almost entirely alpha-helical. These sequences show strong periodicity (consistent with long alpha helical structures) and low complexity rich in D,E,N,Q, and K. Genes encoding these proteins are often found in tandem. The function is unknown.
The actual alignment was detected with superfamily member TIGR04523:
Pssm-ID: 275316 [Multi-domain] Cd Length: 745 Bit Score: 53.10 E-value: 1.18e-06
gp58-like protein; Sequences found in this family are derived from a number of bacteriophage ...
785-877
5.80e-05
gp58-like protein; Sequences found in this family are derived from a number of bacteriophage and prophage proteins. They are similar to gp58, a minor structural protein of Lactococcus delbrueckii bacteriophage LL-H.
The actual alignment was detected with superfamily member pfam07902:
Pssm-ID: 369586 [Multi-domain] Cd Length: 594 Bit Score: 47.64 E-value: 5.80e-05
Chaperone of endosialidase; This is the very C-terminal, chaperone, domain of the ...
1195-1228
6.11e-05
Chaperone of endosialidase; This is the very C-terminal, chaperone, domain of the bacteriophage protein endosialidase. It releases itself, via the serine-lysine dyad at the N-terminus, from the remainder of the end-tail-spike. Cleavage occurs after the threonine which is the final residue of the End-tail-spike family, pfam12219. The endosialidase protein forms homotrimeric molecules in bacteriophages. The catalytic dyad allows this portion of the molecule to be cleaved from the more N-terminal region such that the latter can fold and bind to polysialic acid in the bacterial outer envelope.
:
Pssm-ID: 404724 Cd Length: 56 Bit Score: 41.85 E-value: 6.11e-05
phage minor structural protein, N-terminal region; This model represents the conserved ...
29-352
3.31e-77
phage minor structural protein, N-terminal region; This model represents the conserved N-terminal region, typically from about residue 25 to about residue 350, of a family of uncharacterized phage proteins 500 to 1700 residues in length. [Mobile and extrachromosomal element functions, Prophage functions]
Pssm-ID: 273743 [Multi-domain] Cd Length: 317 Bit Score: 258.11 E-value: 3.31e-77
helix-rich Mycoplasma protein; Members of this family occur strictly within a subset of ...
338-608
1.18e-06
helix-rich Mycoplasma protein; Members of this family occur strictly within a subset of Mycoplasma species. Members average 750 amino acids in length, including signal peptide. Sequences are predicted (Jpred 3) to be almost entirely alpha-helical. These sequences show strong periodicity (consistent with long alpha helical structures) and low complexity rich in D,E,N,Q, and K. Genes encoding these proteins are often found in tandem. The function is unknown.
Pssm-ID: 275316 [Multi-domain] Cd Length: 745 Bit Score: 53.10 E-value: 1.18e-06
gp58-like protein; Sequences found in this family are derived from a number of bacteriophage ...
785-877
5.80e-05
gp58-like protein; Sequences found in this family are derived from a number of bacteriophage and prophage proteins. They are similar to gp58, a minor structural protein of Lactococcus delbrueckii bacteriophage LL-H.
Pssm-ID: 369586 [Multi-domain] Cd Length: 594 Bit Score: 47.64 E-value: 5.80e-05
Chaperone of endosialidase; This is the very C-terminal, chaperone, domain of the ...
1195-1228
6.11e-05
Chaperone of endosialidase; This is the very C-terminal, chaperone, domain of the bacteriophage protein endosialidase. It releases itself, via the serine-lysine dyad at the N-terminus, from the remainder of the end-tail-spike. Cleavage occurs after the threonine which is the final residue of the End-tail-spike family, pfam12219. The endosialidase protein forms homotrimeric molecules in bacteriophages. The catalytic dyad allows this portion of the molecule to be cleaved from the more N-terminal region such that the latter can fold and bind to polysialic acid in the bacterial outer envelope.
Pssm-ID: 404724 Cd Length: 56 Bit Score: 41.85 E-value: 6.11e-05
family of the cytolysin A (ClyA) family alpha pore-forming toxins (alpha-PFT) including ...
473-599
5.40e-03
family of the cytolysin A (ClyA) family alpha pore-forming toxins (alpha-PFT) including Bacillus cereus HblB, Aeromonas hydrophila AhlB, Bacillus thuringiensis Cry6Aa and similar proteins; This family belongs to the ClyA family of alpha-PFT bacterial toxins. PFTs form the major group of virulence factors in many pathogenic bacteria and in general are critical components of the molecular offensive and defensive machinery of cells in all kingdoms of life. Bacterial PFTs facilitate the takeover of host resources by puncturing holes in the membrane. PFTs can be classified as alpha-PFTs and beta-PFTs depending on the secondary structures of their membrane component. Alpha-PFTs use a ring of amphipathic helices while beta-PFTs use a beta-barrel to construct the pore. Members of this family include the toxins: Bacillus cereus hemolysin binding component B (HblB or HBL-B) of the diarrheal enterotoxin hemolysin BL, Aeromonas hydrophila hemolytic (Ahl) component B (AhlB) of the tripartite AhlABC toxin, Vibrio cholerae cytotoxin motility associated killing factor A (MakA) cytotoxin, Xenorhabdus nematophila alpha-xenorhabdolysin (XaxA), Bacillus thuringiensis crystal 6Aa (Cry6Aa) parasporal crystal (Cry) toxin, and Bacillus cereus non-hemolytic enterotoxin (Nhe) component A (NheA) of the non-hemolytic enterotoxin Nhe, which, despite its name, is hemolytic, among others. In solution, ClyA proteins have an elongated, almost entirely alpha-helical structure, except for a short hydrophobic beta-hairpin known as the beta-tongue. Pore formation by ClyA requires circular oligomerization of the toxin by a sequential mechanism. This, in turn, concentrates the amphipathic helices in the center of the ring-like structure, forming a helical barrel that inserts into the membrane by a wedge-like mechanism. Compared with ClyA, NheA is almost entirely alpha-helical with an enlarged "head" domain, and an enlarged beta-tongue; it has been proposed that NheA could even form beta-barrel pores. Alpha-PFTs with similar structures are increasingly being found in eukaryotes, in particular as components of the immune systems of animals. This family may be distantly related to Escherichia coli alpha-PFT hemolysin E (HlyE, also known as ClyA or SheA).
Pssm-ID: 439149 [Multi-domain] Cd Length: 224 Bit Score: 40.09 E-value: 5.40e-03
phage minor structural protein, N-terminal region; This model represents the conserved ...
29-352
3.31e-77
phage minor structural protein, N-terminal region; This model represents the conserved N-terminal region, typically from about residue 25 to about residue 350, of a family of uncharacterized phage proteins 500 to 1700 residues in length. [Mobile and extrachromosomal element functions, Prophage functions]
Pssm-ID: 273743 [Multi-domain] Cd Length: 317 Bit Score: 258.11 E-value: 3.31e-77
helix-rich Mycoplasma protein; Members of this family occur strictly within a subset of ...
338-608
1.18e-06
helix-rich Mycoplasma protein; Members of this family occur strictly within a subset of Mycoplasma species. Members average 750 amino acids in length, including signal peptide. Sequences are predicted (Jpred 3) to be almost entirely alpha-helical. These sequences show strong periodicity (consistent with long alpha helical structures) and low complexity rich in D,E,N,Q, and K. Genes encoding these proteins are often found in tandem. The function is unknown.
Pssm-ID: 275316 [Multi-domain] Cd Length: 745 Bit Score: 53.10 E-value: 1.18e-06
gp58-like protein; Sequences found in this family are derived from a number of bacteriophage ...
785-877
5.80e-05
gp58-like protein; Sequences found in this family are derived from a number of bacteriophage and prophage proteins. They are similar to gp58, a minor structural protein of Lactococcus delbrueckii bacteriophage LL-H.
Pssm-ID: 369586 [Multi-domain] Cd Length: 594 Bit Score: 47.64 E-value: 5.80e-05
Chaperone of endosialidase; This is the very C-terminal, chaperone, domain of the ...
1195-1228
6.11e-05
Chaperone of endosialidase; This is the very C-terminal, chaperone, domain of the bacteriophage protein endosialidase. It releases itself, via the serine-lysine dyad at the N-terminus, from the remainder of the end-tail-spike. Cleavage occurs after the threonine which is the final residue of the End-tail-spike family, pfam12219. The endosialidase protein forms homotrimeric molecules in bacteriophages. The catalytic dyad allows this portion of the molecule to be cleaved from the more N-terminal region such that the latter can fold and bind to polysialic acid in the bacterial outer envelope.
Pssm-ID: 404724 Cd Length: 56 Bit Score: 41.85 E-value: 6.11e-05
helix-rich Mycoplasma protein; Members of this family occur strictly within a subset of ...
369-610
1.91e-04
helix-rich Mycoplasma protein; Members of this family occur strictly within a subset of Mycoplasma species. Members average 750 amino acids in length, including signal peptide. Sequences are predicted (Jpred 3) to be almost entirely alpha-helical. These sequences show strong periodicity (consistent with long alpha helical structures) and low complexity rich in D,E,N,Q, and K. Genes encoding these proteins are often found in tandem. The function is unknown.
Pssm-ID: 275316 [Multi-domain] Cd Length: 745 Bit Score: 45.78 E-value: 1.91e-04
reticulocyte binding/rhoptry protein; This model represents a group of paralogous families in ...
363-659
6.01e-04
reticulocyte binding/rhoptry protein; This model represents a group of paralogous families in plasmodium species alternately annotated as reticulocyte binding protein, 235-kDa family protein and rhoptry protein. Rhoptry protein is localized on the cell surface and is extremely large (although apparently lacking in repeat structure) and is important for the process of invasion of the RBCs by the parasite. These proteins are found in P. falciparum, P. vivax and P. yoelii.
Pssm-ID: 130673 [Multi-domain] Cd Length: 2757 Bit Score: 44.66 E-value: 6.01e-04
reticulocyte binding/rhoptry protein; This model represents a group of paralogous families in ...
366-983
2.39e-03
reticulocyte binding/rhoptry protein; This model represents a group of paralogous families in plasmodium species alternately annotated as reticulocyte binding protein, 235-kDa family protein and rhoptry protein. Rhoptry protein is localized on the cell surface and is extremely large (although apparently lacking in repeat structure) and is important for the process of invasion of the RBCs by the parasite. These proteins are found in P. falciparum, P. vivax and P. yoelii.
Pssm-ID: 130673 [Multi-domain] Cd Length: 2757 Bit Score: 42.73 E-value: 2.39e-03
family of the cytolysin A (ClyA) family alpha pore-forming toxins (alpha-PFT) including ...
473-599
5.40e-03
family of the cytolysin A (ClyA) family alpha pore-forming toxins (alpha-PFT) including Bacillus cereus HblB, Aeromonas hydrophila AhlB, Bacillus thuringiensis Cry6Aa and similar proteins; This family belongs to the ClyA family of alpha-PFT bacterial toxins. PFTs form the major group of virulence factors in many pathogenic bacteria and in general are critical components of the molecular offensive and defensive machinery of cells in all kingdoms of life. Bacterial PFTs facilitate the takeover of host resources by puncturing holes in the membrane. PFTs can be classified as alpha-PFTs and beta-PFTs depending on the secondary structures of their membrane component. Alpha-PFTs use a ring of amphipathic helices while beta-PFTs use a beta-barrel to construct the pore. Members of this family include the toxins: Bacillus cereus hemolysin binding component B (HblB or HBL-B) of the diarrheal enterotoxin hemolysin BL, Aeromonas hydrophila hemolytic (Ahl) component B (AhlB) of the tripartite AhlABC toxin, Vibrio cholerae cytotoxin motility associated killing factor A (MakA) cytotoxin, Xenorhabdus nematophila alpha-xenorhabdolysin (XaxA), Bacillus thuringiensis crystal 6Aa (Cry6Aa) parasporal crystal (Cry) toxin, and Bacillus cereus non-hemolytic enterotoxin (Nhe) component A (NheA) of the non-hemolytic enterotoxin Nhe, which, despite its name, is hemolytic, among others. In solution, ClyA proteins have an elongated, almost entirely alpha-helical structure, except for a short hydrophobic beta-hairpin known as the beta-tongue. Pore formation by ClyA requires circular oligomerization of the toxin by a sequential mechanism. This, in turn, concentrates the amphipathic helices in the center of the ring-like structure, forming a helical barrel that inserts into the membrane by a wedge-like mechanism. Compared with ClyA, NheA is almost entirely alpha-helical with an enlarged "head" domain, and an enlarged beta-tongue; it has been proposed that NheA could even form beta-barrel pores. Alpha-PFTs with similar structures are increasingly being found in eukaryotes, in particular as components of the immune systems of animals. This family may be distantly related to Escherichia coli alpha-PFT hemolysin E (HlyE, also known as ClyA or SheA).
Pssm-ID: 439149 [Multi-domain] Cd Length: 224 Bit Score: 40.09 E-value: 5.40e-03
reticulocyte binding/rhoptry protein; This model represents a group of paralogous families in ...
311-624
6.62e-03
reticulocyte binding/rhoptry protein; This model represents a group of paralogous families in plasmodium species alternately annotated as reticulocyte binding protein, 235-kDa family protein and rhoptry protein. Rhoptry protein is localized on the cell surface and is extremely large (although apparently lacking in repeat structure) and is important for the process of invasion of the RBCs by the parasite. These proteins are found in P. falciparum, P. vivax and P. yoelii.
Pssm-ID: 130673 [Multi-domain] Cd Length: 2757 Bit Score: 41.19 E-value: 6.62e-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.
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The thumbnail image, if present, provides an approximate view of the feature's location in 3 dimensions.
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Functional characterization of the conserved domain architecture found on the query.
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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
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Domains are color coded according to superfamilies
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if a domain or superfamily has been annotated with functional sites (conserved features),
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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)
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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
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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
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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
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