UniProtKB - P0DOI4 (VP1_POVK3)
Protein
Major capsid protein VP1
Gene
N/A
Organism
KI polyomavirus (isolate Stockholm 380) (KIPyV)
Status
Functioni
Forms an icosahedral capsid with a T=7 symmetry and a 40 nm diameter. The capsid is composed of 72 pentamers linked to each other by disulfide bonds and associated with VP2 or VP3 proteins. Interacts with sialic acids on the cell surface to provide virion attachment to target cell. Once attached, the virion is internalized by endocytosis and traffics to the endoplasmic reticulum. Inside the endoplasmic reticulum, the protein folding machinery isomerizes VP1 interpentamer disulfide bonds, thereby triggering initial uncoating. Next, the virion uses the endoplasmic reticulum-associated degradation machinery to probably translocate in the cytosol before reaching the nucleus. Nuclear entry of the viral DNA involves the selective exposure and importin recognition of VP2/Vp3 nuclear localization signal. In late phase of infection, neo-synthesized VP1 encapsulates replicated genomic DNA in the nucleus, and participates in rearranging nucleosomes around the viral DNA.By similarity1 Publication
GO - Molecular functioni
- structural molecule activity Source: InterPro
GO - Biological processi
- endocytosis involved in viral entry into host cell Source: UniProtKB-KW
- virion attachment to host cell Source: UniProtKB-KW
Keywordsi
Biological process | Host-virus interaction, Viral attachment to host cell, Viral penetration into host cytoplasm, Virus endocytosis by host, Virus entry into host cell |
Names & Taxonomyi
Protein namesi | Recommended name: Major capsid protein VP1Alternative name(s): Major structural protein VP1 |
Organismi | KI polyomavirus (isolate Stockholm 380) (KIPyV) |
Taxonomic identifieri | 423448 [NCBI] |
Taxonomic lineagei | Viruses › Monodnaviria › Shotokuvirae › Cossaviricota › Papovaviricetes › Sepolyvirales › Polyomaviridae › Betapolyomavirus › |
Virus hosti | Homo sapiens (Human) [TaxID: 9606] |
Proteomesi |
|
Subcellular locationi
- Virion By similarity
- Host nucleus By similarity
Keywords - Cellular componenti
Capsid protein, Host nucleus, T=7 icosahedral capsid protein, VirionPTM / Processingi
Molecule processing
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
ChainiPRO_0000442711 | 1 – 378 | Major capsid protein VP1Add BLAST | 378 |
Keywords - PTMi
Disulfide bondInteractioni
Subunit structurei
Homomultimer. The virus capsid is composed of 72 icosahedral units, each one composed of five disulfide-linked copies of VP1.
Interacts with minor capsid proteins VP2 and VP3.
By similarityFamily & Domainsi
Sequence similaritiesi
Belongs to the polyomaviruses coat protein VP1 family.Curated
Family and domain databases
Gene3Di | 2.60.175.10, 1 hit |
InterProi | View protein in InterPro IPR000662, Capsid_VP1_Polyomavir IPR011222, dsDNA_vir_gr_I_capsid IPR036931, Polyomavir_VP1_sf |
Pfami | View protein in Pfam PF00718, Polyoma_coat, 1 hit |
SUPFAMi | SSF88648, SSF88648, 1 hit |
s (3)i Sequence
Sequence statusi: Complete.
This entry describes 3 produced by isoformsialternative splicing and alternative initiation. AlignAdd to basketIsoform VP1 (identifier: P0DOI4-1) [UniParc]FASTAAdd to basket
This isoform has been chosen as the sequence. All positional information in this entry refers to it. This is also the sequence that appears in the downloadable versions of the entry. canonicali
10 20 30 40 50
MSCTPCRPQK RLTRPRSQVP RVQTLATEVK KGGVEVLAAV PLSEETEFKV
60 70 80 90 100
ELFVKPVIGN TTAAQDGREP TPHYWSISSA IHDKESGSSI KVEETPDADT
110 120 130 140 150
TVCYSLAEIA PPDIPNQVSE CDMKVWELYR METELLVVPL VNALGNTNGV
160 170 180 190 200
VHGLAGTQLY FWAVGGQPLD VVGVTPTDKY KGPTTYTINP PGDPRTLHVY
210 220 230 240 250
NSNTPKAKVT SERYSVESWA PDPSRNDNCR YFGRVVGGAA TPPVVSYGNN
260 270 280 290 300
STIPLLDENG IGILCLQGRL YITCADMLGT ANSRIHTPMA RFFRLHFRQR
310 320 330 340 350
RVKNPFTMNV LYKQVFNRPT ETVDAQVGVT EVTMVEEIGP LPPSIQTTLP
360 370
TSVNLTQLPR TVTLQSQAPL LNTQQNSK
Note: Produced by alternative splicing of the late mRNA.
Isoform VP2 (identifier: P0DOJ3-1) [UniParc] [UniParc]FASTAAdd to basket
Also known as: Minor capsid protein VP2
The sequence of this isoform can be found in the external entry P0DOJ3.
Isoforms of the same protein are often annotated in two different entries if their sequences differ significantly.
Isoforms of the same protein are often annotated in two different entries if their sequences differ significantly.
Isoform VP3 (identifier: P0DOJ3-2) [UniParc] [UniParc]FASTAAdd to basket
Also known as: Minor capsid protein VP3
The sequence of this isoform can be found in the external entry P0DOJ3.
Isoforms of the same protein are often annotated in two different entries if their sequences differ significantly.
Isoforms of the same protein are often annotated in two different entries if their sequences differ significantly.
Sequence databases
Select the link destinations: EMBLi GenBanki DDBJi Links Updated | EF127908 Genomic DNA Translation: ABN09927.1 |
Keywords - Coding sequence diversityi
Alternative initiation, Alternative splicingSimilar proteinsi
Cross-referencesi
Sequence databases
Select the link destinations: EMBLi GenBanki DDBJi Links Updated | EF127908 Genomic DNA Translation: ABN09927.1 |
3D structure databases
SMRi | P0DOI4 |
ModBasei | Search... |
Family and domain databases
Gene3Di | 2.60.175.10, 1 hit |
InterProi | View protein in InterPro IPR000662, Capsid_VP1_Polyomavir IPR011222, dsDNA_vir_gr_I_capsid IPR036931, Polyomavir_VP1_sf |
Pfami | View protein in Pfam PF00718, Polyoma_coat, 1 hit |
SUPFAMi | SSF88648, SSF88648, 1 hit |
ProtoNeti | Search... |
MobiDBi | Search... |
Entry informationi
Entry namei | VP1_POVK3 | |
Accessioni | P0DOI4Primary (citable) accession number: P0DOI4 Secondary accession number(s): A3R4M8, A3R4N3, A3R4N8 | |
Entry historyi | Integrated into UniProtKB/Swiss-Prot: | December 20, 2017 |
Last sequence update: | December 20, 2017 | |
Last modified: | August 12, 2020 | |
This is version 10 of the entry and version 1 of the sequence. See complete history. | ||
Entry statusi | Reviewed (UniProtKB/Swiss-Prot) | |
Annotation program | Viral Protein Annotation Program |