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Protein

Capsid assembly protein Gp31

Gene

31

Organism
Enterobacteria phage T4 (Bacteriophage T4)
Status
Reviewed-Annotation score: Annotation score: 2 out of 5-Experimental evidence at protein leveli

Functioni

Essential for proper capsid assembly. In absence of Gp31 the major capsid protein (Gp23) assembles into 'lumps'. Acts as a co-chaperonin with the host groEL protein.1 Publication

GO - Biological processi

  • protein folding Source: InterPro
  • viral capsid assembly Source: CACAO
  • viral release from host cell Source: UniProtKB-KW

Keywordsi

Molecular functionChaperone
Biological processViral capsid assembly, Virus exit from host cell

Names & Taxonomyi

Protein namesi
Recommended name:
Capsid assembly protein Gp31
Gene namesi
Name:31
OrganismiEnterobacteria phage T4 (Bacteriophage T4)
Taxonomic identifieri10665 [NCBI]
Taxonomic lineageiVirusesdsDNA viruses, no RNA stageCaudoviralesMyoviridaeTevenvirinaeT4virus
Virus hostiEscherichia coli [TaxID: 562]
Proteomesi
  • UP000009087 Componenti: Genome

Subcellular locationi

GO - Cellular componenti

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00001650181 – 111Capsid assembly protein Gp31Add BLAST111

Expressioni

Keywords - Developmental stagei

Early protein

Interactioni

Subunit structurei

Homoheptamer. Forms a stable complex with groEL in the presence of ATP.

Protein-protein interaction databases

DIPiDIP-59724N.

Structurei

Secondary structure

1111
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details
Feature keyPosition(s)DescriptionActionsGraphical viewLength
Beta strandi15 – 20Combined sources6
Helixi25 – 27Combined sources3
Helixi39 – 44Combined sources6
Beta strandi45 – 54Combined sources10
Beta strandi68 – 72Combined sources5
Helixi73 – 75Combined sources3
Beta strandi77 – 79Combined sources3
Helixi82 – 85Combined sources4
Helixi91 – 93Combined sources3
Beta strandi98 – 102Combined sources5
Helixi103 – 105Combined sources3

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
1G31X-ray2.30A/B/C/D/E/F/G1-111[»]
2CGTelectron microscopy8.20O/P/Q/R/S/T/U1-111[»]
ProteinModelPortaliP17313.
SMRiP17313.
ModBaseiSearch...
MobiDBiSearch...

Miscellaneous databases

EvolutionaryTraceiP17313.

Family & Domainsi

Phylogenomic databases

OrthoDBiVOG0900018P.

Family and domain databases

CDDicd00320. cpn10. 1 hit.
Gene3Di2.30.33.40. 1 hit.
InterProiView protein in InterPro
IPR020818. Chaperonin_GroES.
IPR011032. GroES-like.
IPR016416. Phage_T4_Gp31_GroEL.
PfamiView protein in Pfam
PF00166. Cpn10. 1 hit.
PIRSFiPIRSF004380. Phage_GroES_Gp31. 1 hit.
SUPFAMiSSF50129. SSF50129. 1 hit.

Sequencei

Sequence statusi: Complete.

P17313-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MSEVQQLPIR AVGEYVILVS EPAQAGDEEV TESGLIIGKR VQGEVPELCV
60 70 80 90 100
VHSVGPDVPE GFCEVGDLTS LPVGQIRNVP HPFVALGLKQ PKEIKQKFVT
110
CHYKAIPCLY K
Length:111
Mass (Da):12,079
Last modified:August 1, 1990 - v1
Checksum:iD4F75212CB849EFD
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
X17657 Genomic DNA. Translation: CAA35651.1.
M37882 Genomic DNA. Translation: AAA32506.1.
X54536 Genomic DNA. Translation: CAA38405.1.
M34502 Genomic DNA. Translation: AAA32510.1.
AF158101 Genomic DNA. Translation: AAD42451.1.
PIRiJT0488. VHBPP4.
RefSeqiNP_049825.1. NC_000866.4.

Genome annotation databases

GeneIDi1258757.
KEGGivg:1258757.

Similar proteinsi

Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into one UniRef entry.
90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.

Entry informationi

Entry nameiVG31_BPT4
AccessioniPrimary (citable) accession number: P17313
Entry historyiIntegrated into UniProtKB/Swiss-Prot: August 1, 1990
Last sequence update: August 1, 1990
Last modified: February 15, 2017
This is version 109 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

3D-structure, Complete proteome, Reference proteome

Documents

  1. PDB cross-references
    Index of Protein Data Bank (PDB) cross-references