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

Portal protein

Gene

8

Organism
Enterobacteria phage T3 (Bacteriophage T3)
Status
Reviewed-Annotation score: Annotation score: 2 out of 5-Protein inferred from homologyi

Functioni

Forms the portal vertex of the capsid. 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.By similarity

GO - Biological processi

Keywordsi

Molecular functionViral short tail ejection system
Biological processViral capsid assembly, Viral genome ejection through host cell envelope, Viral genome packaging, Viral penetration into host cytoplasm, Virus entry into host cell, Virus exit from host cell

Names & Taxonomyi

Protein namesi
Recommended name:
Portal protein
Alternative name(s):
Gene product 8
Short name:
Gp8
Head-to-tail connector gp8
Head-to-tail joining protein
Gene namesi
Name:8
OrganismiEnterobacteria phage T3 (Bacteriophage T3)
Taxonomic identifieri10759 [NCBI]
Taxonomic lineageiVirusesdsDNA viruses, no RNA stageCaudoviralesPodoviridaeAutographivirinaeT7virus
Virus hostiEscherichia coli [TaxID: 562]

Subcellular locationi

  • Virion By similarity

GO - Cellular componenti

Keywords - Cellular componenti

Capsid protein, Virion

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00001065161 – 535Portal proteinAdd BLAST535

Interactioni

Subunit structurei

Homododecamer. Interacts with gp10, gp11, gp12, and the large terminase subunit gp19.By similarity

Family & Domainsi

Sequence similaritiesi

Family and domain databases

InterProiView protein in InterPro
IPR020991. Connector_podovirus.
PfamiView protein in Pfam
PF12236. Head-tail_con. 1 hit.

Sequencei

Sequence statusi: Complete.

P20323-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MADSKRTGLG EDGAKATYDR LTNDRRAYET RAENCAQYTI PSLFPKESDN
60 70 80 90 100
ESTDYTTPWQ AVGARGLNNL ASKLMLALFP MQSWMKLTIS EYEAKQLVGD
110 120 130 140 150
PDGLAKVDEG LSMVERIIMN YIESNSYRVT LFECLKQLIV AGNALLYLPE
160 170 180 190 200
PEGSYNPMKL YRLSSYVVQR DAYGNVLQIV TRDQIAFGAL PEDVRSAVEK
210 220 230 240 250
SGGEKKMDEM VDVYTHVYLD EESGDYLKYE EVEDVEIDGS DATYPTDAMP
260 270 280 290 300
YIPVRMVRID GESYGRSYCE EYLGDLRSLE NLQEAIVKMS MISAKVIGLV
310 320 330 340 350
NPAGITQPRR LTKAQTGDFV PGRREDIDFL QLEKQADFTV AKAVSDQIEA
360 370 380 390 400
RLSYAFMLNS AVQRTGERVT AEEIRYVASE LEDTLGGVYS ILSQELQLPL
410 420 430 440 450
VRVLLKQLQA TSQIPELPKE AVEPTISTGL EAIGRGQDLD KLERCISAWA
460 470 480 490 500
ALAPMQGDPD INLAVIKLRI ANAIGIDTSG ILLTDEQKQA LMMQDAAQTG
510 520 530
VENAAAAGGA GVGALATSSP EAMQGAAAKA GLNAT
Length:535
Mass (Da):58,620
Last modified:February 1, 1991 - v1
Checksum:i1791F9551535535C
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
X17255 Genomic DNA. Translation: CAA35152.1.
PIRiS07521.
RefSeqiNP_523332.1. NC_003298.1.

Genome annotation databases

GeneIDi927409.
KEGGivg:927409.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
X17255 Genomic DNA. Translation: CAA35152.1.
PIRiS07521.
RefSeqiNP_523332.1. NC_003298.1.

3D structure databases

ModBaseiSearch...
MobiDBiSearch...

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

GeneIDi927409.
KEGGivg:927409.

Family and domain databases

InterProiView protein in InterPro
IPR020991. Connector_podovirus.
PfamiView protein in Pfam
PF12236. Head-tail_con. 1 hit.
ProtoNetiSearch...

Entry informationi

Entry nameiPORTL_BPT3
AccessioniPrimary (citable) accession number: P20323
Entry historyiIntegrated into UniProtKB/Swiss-Prot: February 1, 1991
Last sequence update: February 1, 1991
Last modified: May 10, 2017
This is version 49 of the entry and version 1 of the sequence. See complete history.
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programViral Protein Annotation Program

Miscellaneousi

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.