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Q80IG9

- VP7_ROTB9

UniProt

Q80IG9 - VP7_ROTB9

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Protein
Outer capsid glycoprotein VP7
Gene
N/A
Organism
Rotavirus A (isolate Cow/Germany/993/1983 G18-P[17]-Ix-Rx-Cx-Mx-Ax-Nx-Tx-Ex-Hx) (RV-A)
Status
Reviewed - Annotation score: 2 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.

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 (isolate Cow/Germany/993/1983 G18-P[17]-Ix-Rx-Cx-Mx-Ax-Nx-Tx-Ex-Hx) (RV-A)
Taxonomic identifieri45408 [NCBI]
Taxonomic lineageiVirusesdsRNA virusesReoviridaeSedoreovirinaeRotavirusRotavirus A
Virus hostiBos taurus (Bovine) [TaxID: 9913]

Subcellular locationi

Virion By similarity. Host endoplasmic reticulum lumen Reviewed prediction
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.

GO - Cellular componenti

  1. T=13 icosahedral viral capsid Source: UniProtKB-KW
  2. host cell endoplasmic reticulum lumen Source: UniProtKB-SubCell
  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 – 5353 Reviewed prediction
Add
BLAST
Chaini54 – 329276Outer capsid glycoprotein VP7 Reviewed prediction
PRO_0000369095Add
BLAST

Amino acid modifications

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Glycosylationi72 – 721N-linked (GlcNAc...); by host Reviewed prediction
Glycosylationi241 – 2411N-linked (GlcNAc...); by host Reviewed prediction
Glycosylationi321 – 3211N-linked (GlcNAc...); by host Reviewed prediction

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.

Family & Domainsi

Sequence similaritiesi

Belongs to the rotavirus VP7 family.

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]

Sequencei

Sequence statusi: Complete.

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

Q80IG9-1 [UniParc]FASTAAdd to Basket

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MYSTECTILL IEIIFYFFAA VVVYDAIHKM ANSPIFCIAV LAVVFAVSPK    50
CFAQNYGINV PITGSLDVAV PNKTDDQIGL TSSLCIYYPN EAEIEINDNE 100
WKNTVAQLLL TKGWPTTSVY LNGYADLQSF SNNPQLNCDY NIVLVKYDQN 150
AGLDMSELAE LLLYEWLCNE MDVNLYYYQQ TSEANKWIAM GSDCTIKVCP 200
LNTQTLGIGC QTTDVATFEQ LTATEKLAII DVVDGVNHKV NYTIATCTLK 250
NCIRLNQREN VAIIQVGGPE IIDVSEDPMI VPKMIRATRI NWKKWWQVFY 300
TVVDYINTII QAMSKRSRSL NTSTYFLRI 329
Length:329
Mass (Da):37,178
Last modified:June 1, 2003 - v1
Checksum:i2B203086D872C467
GO

Sequence databases

Select the link destinations:
EMBL
GenBank
DDBJ
Links Updated
X98869 Genomic RNA. Translation: CAD83158.1.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBL
GenBank
DDBJ
Links Updated
X98869 Genomic RNA. Translation: CAD83158.1 .

3D structure databases

ModBasei 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. "Bovine rotavirus 993/83 shows a third subtype of avian VP7 protein."
    Rohwedder A., Hotop H., Minamoto N., Ito H., Nakagomi O., Brussow H.
    Virus Genes 14:147-151(1997) [PubMed] [Europe PMC] [Abstract]
    Cited for: NUCLEOTIDE SEQUENCE [GENOMIC RNA].

Entry informationi

Entry nameiVP7_ROTB9
AccessioniPrimary (citable) accession number: Q80IG9
Entry historyi
Integrated into UniProtKB/Swiss-Prot: April 14, 2009
Last sequence update: June 1, 2003
Last modified: February 19, 2014
This is version 39 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

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