Summary: Bacteriophage coat protein B
Bacteriophage coat protein B Provide feedback
CoatB is a single filamentous bacteriophage alpha helix of approximately 44 residues. It is likely to assemble into a complex of 35 monomers in a Catherine-wheel like formation . It is the major coat protein of the virion.
External database links
This tab holds annotation information from the InterPro database.
InterPro entry IPR008020
The major coat protein in the capsid of filamentous bacteriophage forms a helical assembly of about 7000 identical protomers, with each protomer comprised of 46 amino acids, after the cleavage of the signal peptide. Each protomer forms a slightly curved helix that combines to form a tubular structure that encapsulates the viral DNA [PUBMED:10666593].
- the number of sequences which exhibit this architecture
a textual description of the architecture, e.g. Gla, EGF x 2, Trypsin.
This example describes an architecture with one
Gladomain, followed by two consecutive
EGFdomains, and finally a single
- the UniProt description of the protein sequence
- the number of residues in the sequence
- the Pfam graphic itself.
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We make a range of alignments for each Pfam-A family:
- the curated alignment from which the HMM for the family is built
- the alignment generated by searching the sequence database using the HMM
- Representative Proteomes (RPs) at 15%, 35%, 55% and 75% co-membership thresholds
- alignment generated by searching the NCBI sequence database using the family HMM
- alignment generated by searching the metagenomics sequence database using the family HMM
You can see the alignments as HTML or in three different sequence viewers:
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1Cannot generate PP/Heatmap alignments for seeds; no PP data available
Key: available, not generated, — not available.
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Curation and family details
|Seed source:||Gene3D pdb_2ifo|
|Author:||Finn RD, Coggill PC|
|Number in seed:||6|
|Number in full:||39|
|Average length of the domain:||46.50 aa|
|Average identity of full alignment:||34 %|
|Average coverage of the sequence by the domain:||62.44 %|
|HMM build commands:||
build method: hmmbuild -o /dev/null HMM SEED
search method: hmmsearch -Z 23193494 -E 1000 --cpu 4 HMM pfamseq
|Family (HMM) version:||4|
|Download:||download the raw HMM for this family|
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The tree shows the occurrence of this domain across different species. More...
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For those sequences which have a structure in the Protein DataBank, we use the mapping between UniProt, PDB and Pfam coordinate systems from the PDBe group, to allow us to map Pfam domains onto UniProt sequences and three-dimensional protein structures. The table below shows the structures on which the CoatB domain has been found. There are 1 instances of this domain found in the PDB. Note that there may be multiple copies of the domain in a single PDB structure, since many structures contain multiple copies of the same protein seqence.
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