Portal protein - P54309 (PORTL_BPSPP)

 

Protein Feature View of PDB entries mapped to a UniProtKB sequence  

  • Number of PDB entries for P54309: 3
 
Function
Forms the portal vertex of the capsid (PubMed:17363899). This portal plays critical roles in head assembly, genome packaging, neck/tail attachment, and genome ejection. The portal protein multimerizes as a single ring-shaped homododecamer arranged around a central channel. Binds to the terminase subunits to form the packaging machine. Necessary to ensure correct procapsid size during capsid assembly. Once the capsid is packaged with the DNA, the terminase complex is substituted by the connector proteins gp15. UniProt
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Subunit Structure
Homododecamer (PubMed:8890151, PubMed:17363899). Has been seen as 13-mer and 14-mer multimer in experiments, but assembles as homododecamer in vivo (PubMed:8890151, PubMed:17363899). Interacts with the gp7 protein (PubMed:10656821, PubMed:12940981). Interacts with the connector proteins gp15; this interaction occurs at the end of the packaging when the terminase complex is replaced by the connector (PubMed:25991862). UniProt
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Data in green originates from UniProtKB  
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Data in yellow originates from Pfam  , by interacting with the HMMER3 web site  
Data in purple originates from Phosphosite  .
Data in orange originates from the SCOP   (version 1.75) and SCOPe   (version 2.04) classifications.
Data in grey has been calculated using BioJava  . Protein disorder predictions are based on JRONN (Troshin, P. and Barton, G. J. unpublished), a Java implementation of RONN  
  • Red: potentially disorderd region
  • Blue: probably ordered region.
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  • Blue: hydrophilic.
Data in lilac represent the genomic exon structure projected onto the UniProt sequence.
Data in blue originates from PDB
  • Secstruc: Secondary structure projected from representative PDB entries onto the UniProt sequence.
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The PDB to UniProt mapping is based on the data provided by the EBI SIFTS project. See also Velankar et al., Nucleic Acids Research 33, D262-265 (2005).
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