phage portal protein belonging to the SPP1-like portal protein family forms the portal vertex of the capsid; the portal plays critical roles in head assembly, genome packaging, neck/tail attachment, and genome ejection; may be partial
Phage portal protein, SPP1 Gp6-like; This bacteriophage protein forms a gateway that enables ...
16-483
3.65e-143
Phage portal protein, SPP1 Gp6-like; This bacteriophage protein forms a gateway that enables DNA passage during packaging and ejection of the phage genome. It also forms the junction between the phage head (capsid) and the tail proteins. During SPP1 morphogenesis, the portal protein, Gp6, participates in the procapsid assembly reaction. In the mature SPP1 virion, Gp6 exists as a dodecamer, while recombinant SPP1 Gp6 has been shown to form 13-subunit assemblies. This protein is common to Siphoviridae (phages with long non-contractile tails) and Myoviridae (phages with contractile tails). It is also found in a number of bacterial species. This family also includes the old Pfam family Phage_min_cap (PF:PF05126). RC Paper describing PDB structure 2jes
The actual alignment was detected with superfamily member TIGR01542:
Pssm-ID: 418597 Cd Length: 476 Bit Score: 419.70 E-value: 3.65e-143
phage portal protein, putative, A118 family; This model represents a family of phage minor ...
16-483
3.65e-143
phage portal protein, putative, A118 family; This model represents a family of phage minor structural proteins. The protein is suggested to be the head-tail connector, or portal protein, on the basis of its position in the phage gene order, its presence in mature phage, its size, and its conservation across a number of complete genomes of tailed phage that lack other candidate portal proteins. Several other known portal protein families lack clear homology to this family and to each other. [Mobile and extrachromosomal element functions, Prophage functions]
Pssm-ID: 130605 Cd Length: 476 Bit Score: 419.70 E-value: 3.65e-143
Phage portal protein, SPP1 Gp6-like; This bacteriophage protein forms a gateway that enables ...
29-479
1.87e-21
Phage portal protein, SPP1 Gp6-like; This bacteriophage protein forms a gateway that enables DNA passage during packaging and ejection of the phage genome. It also forms the junction between the phage head (capsid) and the tail proteins. During SPP1 morphogenesis, the portal protein, Gp6, participates in the procapsid assembly reaction. In the mature SPP1 virion, Gp6 exists as a dodecamer, while recombinant SPP1 Gp6 has been shown to form 13-subunit assemblies. This protein is common to Siphoviridae (phages with long non-contractile tails) and Myoviridae (phages with contractile tails). It is also found in a number of bacterial species. This family also includes the old Pfam family Phage_min_cap (PF:PF05126). RC Paper describing PDB structure 2jes
Pssm-ID: 398687 Cd Length: 416 Bit Score: 96.63 E-value: 1.87e-21
phage portal protein, putative, A118 family; This model represents a family of phage minor ...
16-483
3.65e-143
phage portal protein, putative, A118 family; This model represents a family of phage minor structural proteins. The protein is suggested to be the head-tail connector, or portal protein, on the basis of its position in the phage gene order, its presence in mature phage, its size, and its conservation across a number of complete genomes of tailed phage that lack other candidate portal proteins. Several other known portal protein families lack clear homology to this family and to each other. [Mobile and extrachromosomal element functions, Prophage functions]
Pssm-ID: 130605 Cd Length: 476 Bit Score: 419.70 E-value: 3.65e-143
Phage portal protein, SPP1 Gp6-like; This bacteriophage protein forms a gateway that enables ...
29-479
1.87e-21
Phage portal protein, SPP1 Gp6-like; This bacteriophage protein forms a gateway that enables DNA passage during packaging and ejection of the phage genome. It also forms the junction between the phage head (capsid) and the tail proteins. During SPP1 morphogenesis, the portal protein, Gp6, participates in the procapsid assembly reaction. In the mature SPP1 virion, Gp6 exists as a dodecamer, while recombinant SPP1 Gp6 has been shown to form 13-subunit assemblies. This protein is common to Siphoviridae (phages with long non-contractile tails) and Myoviridae (phages with contractile tails). It is also found in a number of bacterial species. This family also includes the old Pfam family Phage_min_cap (PF:PF05126). RC Paper describing PDB structure 2jes
Pssm-ID: 398687 Cd Length: 416 Bit Score: 96.63 E-value: 1.87e-21
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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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.
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if a domain or superfamily has been annotated with functional sites (conserved features),
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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,
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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,
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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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the domain superfamily to which the specific and non-specific hits belong
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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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