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Protein

Terminase, small subunit gp18

Gene

18

Organism
Enterobacteria phage T7 (Bacteriophage T7)
Status
Reviewed-Annotation score: Annotation score: 2 out of 5-Experimental evidence at protein leveli

Functioni

Plays a role in packaging a single copy of genome into the prohead. The terminase is composed of two subunits (a large and a small) and the small subunit recognizes the DNA to be encaspidated. Once the DNA is packaged, the terminase detaches from the connector and the tail replaces it to finish maturation of the virion.1 Publication

GO - Molecular functioni

GO - Biological processi

Keywordsi

Molecular functionDNA-binding
Biological processViral genome packaging, Virus exit from host cell

Names & Taxonomyi

Protein namesi
Recommended name:
Terminase, small subunit gp18
Alternative name(s):
DNA-packaging protein A
Gene product 18
Short name:
Gp18
Gene namesi
Ordered Locus Names:18
OrganismiEnterobacteria phage T7 (Bacteriophage T7)
Taxonomic identifieri10760 [NCBI]
Taxonomic lineageiVirusesdsDNA viruses, no RNA stageCaudoviralesPodoviridaeAutographivirinaeT7virus
Virus hostiEscherichia coli [TaxID: 562]
Proteomesi
  • UP000000840 Componenti: Genome

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00001065351 – 89Terminase, small subunit gp18Add BLAST89

Interactioni

Subunit structurei

Homooctamer (Probable). Interacts with the terminase large subunit gp19; the active complex is probably heterooligomeric.1 Publication

Family & Domainsi

Sequence similaritiesi

Belongs to the terminase small subunit family.Curated

Phylogenomic databases

OrthoDBiVOG090001LC.

Family and domain databases

InterProiView protein in InterPro
IPR024345. DNA_matur_Phage_T7-like.
PfamiView protein in Pfam
PF11123. DNA_Packaging_2. 1 hit.
ProDomiView protein in ProDom or Entries sharing at least one domain
PD029080. PD029080. 1 hit.

Sequencei

Sequence statusi: Complete.

P03693-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MEKDKSLITF LEMLDTAMAQ RMLADLSDHE RRSPQLYNAI NKLLDRHKFQ
60 70 80
IGKLQPDVHI LGGLAGALEE YKEKVGDNGL TDDDIYTLQ
Length:89
Mass (Da):10,146
Last modified:July 21, 1986 - v1
Checksum:i344B03EC22B42145
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
V01146 Genomic DNA. Translation: CAA24437.1.
PIRiA04315. JVBPA7.
RefSeqiNP_042007.1. NC_001604.1.

Genome annotation databases

GeneIDi1261042.
KEGGivg:1261042.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
V01146 Genomic DNA. Translation: CAA24437.1.
PIRiA04315. JVBPA7.
RefSeqiNP_042007.1. NC_001604.1.

3D structure databases

ModBaseiSearch...
MobiDBiSearch...

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

GeneIDi1261042.
KEGGivg:1261042.

Phylogenomic databases

OrthoDBiVOG090001LC.

Family and domain databases

InterProiView protein in InterPro
IPR024345. DNA_matur_Phage_T7-like.
PfamiView protein in Pfam
PF11123. DNA_Packaging_2. 1 hit.
ProDomiView protein in ProDom or Entries sharing at least one domain
PD029080. PD029080. 1 hit.
ProtoNetiSearch...

Entry informationi

Entry nameiTERS_BPT7
AccessioniPrimary (citable) accession number: P03693
Entry historyiIntegrated into UniProtKB/Swiss-Prot: July 21, 1986
Last sequence update: July 21, 1986
Last modified: February 15, 2017
This is version 58 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, Reference proteome

Documents

  1. SIMILARITY comments
    Index of protein domains and families

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.