Skip Header

You are using a version of browser that may not display all the features of this website. Please consider upgrading your browser.
Protein

Internal scaffolding protein B

Gene

B

Organism
Enterobacteria phage phiK (Bacteriophage phi-K)
Status
Reviewed-Annotation score: Annotation score: 2 out of 5-Protein inferred from homologyi

Functioni

Participates in the assembly of the viral procapsid in the cytoplasm. Forms first a 12S pre-assembly complex with protein H, and F and G pentamers, then twelve 12S complexes are joined by the D protein to form the procapsid. Internal scaffold protein B is released from the procapsid upon genome packaging, possibly through affinity displacement by the protein J, or by proteolysis.By similarity

Miscellaneous

Phi KhT, a host-range mutant of phi K, can grow on E.coli C and B, besides K12, and is more thermosensitive than the parental phage phi K.

GO - Biological processi

Keywordsi

Biological processViral capsid assembly, Virus exit from host cell

Names & Taxonomyi

Protein namesi
Recommended name:
Internal scaffolding protein B
Alternative name(s):
Scaffolding protein B
Short name:
GPB
Gene namesi
Name:B
OrganismiEnterobacteria phage phiK (Bacteriophage phi-K)
Taxonomic identifieri10848 [NCBI]
Taxonomic lineageiVirusesssDNA virusesMicroviridaeBullavirinaeAlpha3microvirus
Virus hostiEscherichia coli [TaxID: 562]
Proteomesi
  • UP000002122 Componenti: Genome

Subcellular locationi

  • Host cytoplasm By similarity

GO - Cellular componenti

Keywords - Cellular componenti

Host cytoplasm

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00001648691 – 117Internal scaffolding protein BAdd BLAST117

Post-translational modificationi

The proteolytic cleavage of the protein B by the host may occur directly inside the procapsid, thus releasing the scaffold protein in order to continue virion assembly. The B protein would be completely processed into small fragments by proteolytic digestion.By similarity

Interactioni

Subunit structurei

Component of the procapsid complex composed of 60 copies of the internally located B, 240 copies of the external scaffolding protein D, 60 copies of each of the viral structural proteins F and G proteins, and 12 copies of H.By similarity

Structurei

3D structure databases

ProteinModelPortaliQ38036.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Belongs to the microviridae B protein family.Curated

Phylogenomic databases

OrthoDBiVOG0900015X.

Family and domain databases

InterProiView protein in InterPro
IPR003513. Phage_B.
PfamiView protein in Pfam
PF02304. Phage_B. 1 hit.
ProDomiView protein in ProDom or Entries sharing at least one domain
PD012751. Phage_B. 1 hit.

Sequencei

Sequence statusi: Complete.

Q38036-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MQESINGNLS EERISGAQQP EAWNGAPVNG SPEQQSASGA ESNQLRFQSS
60 70 80 90 100
LSDSERERQK ATDLEHRRAA FARHFGCAPG SEKHVESYSS FDEKDTRVQL
110
AEFYRFNDGH LKKWGYF
Length:117
Mass (Da):13,226
Last modified:November 1, 1997 - v1
Checksum:iABB8292704E13C0E
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
X60323 Genomic DNA. Translation: CAA42885.1.
RefSeqiNP_043943.1. NC_001730.1.

Genome annotation databases

GeneIDi1261193.
KEGGivg:1261193.

Similar proteinsi

Entry informationi

Entry nameiSCAFB_BPPHK
AccessioniPrimary (citable) accession number: Q38036
Entry historyiIntegrated into UniProtKB/Swiss-Prot: November 1, 1997
Last sequence update: November 1, 1997
Last modified: July 5, 2017
This is version 50 of the entry and version 1 of the sequence. See complete history.
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programViral Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome

Documents

  1. SIMILARITY comments
    Index of protein domains and families