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P17071

- VP7_ROTHB

UniProt

P17071 - VP7_ROTHB

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Protein

Outer capsid glycoprotein VP7

Gene
N/A
Organism
Rotavirus A (strain Human/Indonesia/B37/198? G8-Px[x]-Ix-Rx-Cx-Mx-Ax-N2-Tx-Ex-H2) (RV-A)
Status
Reviewed - Annotation score: 3 out of 5- Protein inferred from homologyi

Functioni

Outer capsid protein involved in attachment and possibly entry into the host epithelial cell. It is subsequently lost, together with VP4, following virus entry into the host cell. The outer layer contains 780 copies of VP7, grouped as 260 trimers. Rotavirus attachment and entry into the host cell probably involves multiple sequential contacts between the outer capsid proteins VP4 and VP7, and the cell receptors. In integrin-dependent strains, VP7 seems to essentially target the integrin heterodimers ITGAX/ITGB2 and ITGA5/ITGB3 at a postbinding stage, once the initial attachment by VP4 has been achieved (By similarity).By similarity

GO - Biological processi

  1. viral process Source: UniProtKB-KW
Complete GO annotation...

Keywords - Biological processi

Host-virus interaction

Keywords - Ligandi

Calcium

Names & Taxonomyi

Protein namesi
Recommended name:
Outer capsid glycoprotein VP7
OrganismiRotavirus A (strain Human/Indonesia/B37/198? G8-Px[x]-Ix-Rx-Cx-Mx-Ax-N2-Tx-Ex-H2) (RV-A)
Taxonomic identifieri10949 [NCBI]
Taxonomic lineageiVirusesdsRNA virusesReoviridaeSedoreovirinaeRotavirusRotavirus A
Virus hostiHomo sapiens (Human) [TaxID: 9606]

Subcellular locationi

Virion By similarity. Host endoplasmic reticulum lumen Curated
Note: Immature double-layered particles assembled in the cytoplasm bud across the membrane of the endoplasmic reticulum, acquiring during this process a transient lipid membrane that is modified with the ER resident viral glycoproteins NSP4 and VP7; these enveloped particles also contain VP4. As the particles move towards the interior of the ER cisternae, the transient lipid membrane and the non-structural protein NSP4 are lost, while the virus surface proteins VP4 and VP7 rearrange to form the outermost virus protein layer, yielding mature infectious triple-layered particles (By similarity).By similarity

GO - Cellular componenti

  1. host cell endoplasmic reticulum Source: UniProtKB-KW
  2. T=13 icosahedral viral capsid Source: UniProtKB-KW
  3. viral outer capsid Source: UniProtKB-KW
Complete GO annotation...

Keywords - Cellular componenti

Capsid protein, Host endoplasmic reticulum, Outer capsid protein, T=13 icosahedral capsid protein, Virion

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Signal peptidei1 – 5050Sequence AnalysisAdd
BLAST
Chaini51 – 326276Outer capsid glycoprotein VP7Sequence AnalysisPRO_0000149596Add
BLAST

Amino acid modifications

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Glycosylationi69 – 691N-linked (GlcNAc...); by hostSequence Analysis
Glycosylationi238 – 2381N-linked (GlcNAc...); by hostSequence Analysis

Post-translational modificationi

The N-terminus is blocked possibly by pyroglutamic acid.By similarity
N-glycosylated.By similarity
Intramolecular disulfide bonds.By similarity

Keywords - PTMi

Disulfide bond, Glycoprotein

Interactioni

Subunit structurei

Homotrimer; in the presence of calcium (By similarity). Acquisition of the capsid outer layer requires a high calcium concentration inside the endoplasmic reticulum. Following cell entry, the low calcium concentration in the cytoplasm is probably responsible for the solubilization of the outer layer. Interacts with host integrin heterodimers ITGAX/ITGB2 and ITGA5/ITGB3 (By similarity).By similarity

Family & Domainsi

Sequence similaritiesi

Belongs to the rotavirus VP7 family.Curated

Keywords - Domaini

Signal

Family and domain databases

InterProiIPR001963. VP7.
[Graphical view]
PfamiPF00434. VP7. 1 hit.
[Graphical view]
ProDomiPD000191. VP7. 1 hit.
[Graphical view] [Entries sharing at least one domain]

Sequences (2)i

Sequence statusi: Complete.

Sequence processingi: The displayed sequence is further processed into a mature form.

This entry describes 2 isoformsi produced by alternative initiation. Align

Isoform 1 (identifier: P17071-1) [UniParc]FASTAAdd to Basket

This isoform has been chosen as the 'canonical' sequence. All positional information in this entry refers to it. This is also the sequence that appears in the downloadable versions of the entry.

« Hide

        10         20         30         40         50
MYGIEYTTTL TFLILLVLLN YILKSITRIM DYILYTFLLF IVIVTPFVNS
60 70 80 90 100
QNYGINLPIT GSMDTNYQNV SNPEPFLTST LCLYYPVEAE TEIADSSWKD
110 120 130 140 150
TLSQLFLTKG WPTGSVYLKS YTDIATFSIN PQLYCDYNIV LMKYNANSEL
160 170 180 190 200
DMSELADLIL NEWLCNPMDI ALYYYQQSSE SKQWISMGDS CTDKVCPLNT
210 220 230 240 250
QTLRIGCLTT DTTTFEEVAT AEKLVITDVV DGVNYKINVT TTTCTIRNCK
260 270 280 290 300
KLGPRENVAV IQVGGSFILD ITADPTTAPQ TERMMRINWK KWWQVFYTVV
310 320
DYVNQIIQTM SKRSRSLDSA SFYYRI
Length:326
Mass (Da):37,356
Last modified:August 1, 1990 - v1
Checksum:i6ECC512F0D9B8EC7
GO
Isoform 2 (identifier: P17071-2) [UniParc]FASTAAdd to Basket

The sequence of this isoform differs from the canonical sequence as follows:
     1-29: Missing.

Note: Produced by alternative initiation at Met-30 of isoform 1. No experimental confirmation available.

Show »
Length:297
Mass (Da):33,954
Checksum:i6D439C8238B65F74
GO

Alternative sequence

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Alternative sequencei1 – 2929Missing in isoform 2. CuratedVSP_038618Add
BLAST

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
J04334 Genomic RNA. Translation: AAA47344.1.
PIRiA31469. VGXRB7.

Keywords - Coding sequence diversityi

Alternative initiation

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
J04334 Genomic RNA. Translation: AAA47344.1 .
PIRi A31469. VGXRB7.

3D structure databases

ModBasei Search...
MobiDBi Search...

Protocols and materials databases

Structural Biology Knowledgebase Search...

Family and domain databases

InterProi IPR001963. VP7.
[Graphical view ]
Pfami PF00434. VP7. 1 hit.
[Graphical view ]
ProDomi PD000191. VP7. 1 hit.
[Graphical view ] [Entries sharing at least one domain ]
ProtoNeti Search...

Publicationsi

  1. "The VP7 gene of a new G serotype of human rotavirus (B37) is similar to G3 proteins in the antigenic c region."
    Hum C.P., Dyall-Smith M.L., Holmes I.H.
    Virology 170:55-61(1989) [PubMed] [Europe PMC] [Abstract]
    Cited for: NUCLEOTIDE SEQUENCE [GENOMIC RNA].

Entry informationi

Entry nameiVP7_ROTHB
AccessioniPrimary (citable) accession number: P17071
Entry historyi
Integrated into UniProtKB/Swiss-Prot: August 1, 1990
Last sequence update: August 1, 1990
Last modified: October 29, 2014
This is version 76 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programViral Protein Annotation Program

Miscellaneousi

Miscellaneous

In group A rotaviruses, VP7 defines the G serotype.

Documents

  1. SIMILARITY comments
    Index of protein domains and families

External Data

Dasty 3