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Q6WAT6

- VP3_ROTBU

UniProt

Q6WAT6 - VP3_ROTBU

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Protein
Protein VP3
Gene
N/A
Organism
Rotavirus A (strain Cow/United Kingdom/UK/1975 G6-P7[5]-I2-R2-C2-M2-A3-N2-T7-E2-H3) (RV-A)
Status
Reviewed - Annotation score: 3 out of 5 - Protein inferred from homologyi

Functioni

Multifunctional enzyme involved in mRNA capping. Catalyzes the formation of the 5' cap structure on the viral plus-strand transcripts. Specifically binds to GTP and displays guanylyltransferase and methyltransferase activities. Has affinity for ssRNA but not for dsRNA. Capping activity is non-specific and caps RNAs that initiate with either a G or an A residue. Together with VP1 polymerase, forms an enzyme complex positioned near the channels situated at each of the five-fold vertices of the core. Following infection, the outermost layer of the virus is lost, leaving a double-layered particle (DLP) made up of the core and VP6 shell. VP1 then catalyzes the transcription of fully conservative plus-strand genomic RNAs that are capped by VP3 and extruded through the DLP's channels into the cytoplasm where they function as mRNAs for translation of viral proteins. DLPs probably have an RNA triphosphatase activity as well, whereas open cores don't By similarity.

Catalytic activityi

GTP + (5')pp-Pur-mRNA = diphosphate + G(5')ppp-Pur-mRNA.
S-adenosyl-L-methionine + G(5')pppR-RNA = S-adenosyl-L-homocysteine + m7G(5')pppR-RNA.

GO - Molecular functioni

  1. GTP binding Source: UniProtKB-KW
  2. RNA binding Source: UniProtKB-KW
  3. mRNA (guanine-N7-)-methyltransferase activity Source: UniProtKB-EC
  4. mRNA guanylyltransferase activity Source: UniProtKB-EC

GO - Biological processi

  1. viral process Source: InterPro
Complete GO annotation...

Keywords - Molecular functioni

Methyltransferase, Nucleotidyltransferase, Transferase

Keywords - Biological processi

mRNA capping, mRNA processing

Keywords - Ligandi

GTP-binding, Nucleotide-binding, RNA-binding, S-adenosyl-L-methionine

Names & Taxonomyi

Protein namesi
Recommended name:
Protein VP3
Including the following 2 domains:
mRNA guanylyltransferase (EC:2.7.7.50)
mRNA (guanine-N(7)-)-methyltransferase (EC:2.1.1.56)
OrganismiRotavirus A (strain Cow/United Kingdom/UK/1975 G6-P7[5]-I2-R2-C2-M2-A3-N2-T7-E2-H3) (RV-A)
Taxonomic identifieri10934 [NCBI]
Taxonomic lineageiVirusesdsRNA virusesReoviridaeSedoreovirinaeRotavirusRotavirus A
Virus hostiBos taurus (Bovine) [TaxID: 9913]
ProteomesiUP000008657: Genome

Subcellular locationi

Virion Reviewed prediction
Note: Attached inside the inner capsid as a minor component. Also found in spherical cytoplasmic structures, called virus factories, that appear early after infection and are the site of viral replication and packaging Reviewed prediction.

GO - Cellular componenti

  1. viral nucleocapsid Source: InterPro
Complete GO annotation...

Keywords - Cellular componenti

Virion

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 835835Protein VP3
PRO_0000368074Add
BLAST

Interactioni

Subunit structurei

Interacts with VP1 Reviewed prediction. Interacts with VP2 By similarity.

Family & Domainsi

Sequence similaritiesi

Belongs to the rotavirus VP3 family.

Family and domain databases

InterProiIPR011181. VP3_Rotav.
[Graphical view]
PfamiPF06929. Rotavirus_VP3. 1 hit.
[Graphical view]
PIRSFiPIRSF004015. LigT_rotavirus. 1 hit.
PROSITEiPS51589. SAM_MT56_VP3. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Complete.

Q6WAT6-1 [UniParc]FASTAAdd to Basket

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MKVLALRHSV AQVYADTQIY IHDETKDDYE NAFFISNLTT HNILYLNYSV    50
KTLQILNKSG IAAVEIQKMD KLFTLIRCNF TYDYIDDVVY LHDYSYYTNN 100
EIRTDQHWVT KTNIEDYLLP GWKLTYVGYN GNDTRGHYNF SFKCQNAATD 150
DDAIIEYIYS NELDFQNFIL KKIKERMTTS LPIARLSNRV FRDKLFKTLV 200
SDHSKIVNVG PRNESMFTFL DHPSIKQFSN GPYLVKDTIK LKQERWLGKR 250
LSQFDIGQYK NYVKCINNLI SIYDMYHEKP IIYMLGSAPS YWIHDVKQYS 300
NLKFETWDPL DTPYSDLHHK ELFYISDVTK LKDNSILYID IRTDRENADW 350
KTWRKIVEEQ TVNNLNIAYK YLSTGKAKVC CVKMTAMDLE LPISAKLLHH 400
PTTEIRSEFY LIMDIWDSKN IKRFIPKGVL YSYINNIITE NVFIQQPFKL 450
KTLRNEYVVA LYALSNDFNN REDVIKLINN QKNALITVRI NNTFKDEPKV 500
GFKDIYDWTF LPTDFETNES IITSYDGCLG VFGLSISLAS KPTGNNHLFM 550
LSGTNKYFNM DQFANHMSIS RRSHQIRFSE SATSYSGYIF RDLSNNNFNL 600
IGTNVENSVS GHVYNALIYY RYNYSFDLKR WIYLHSTNKA SIEGGRYYEH 650
APIELIYACR SAREFAKLQD DLTVLRYSNE IENYINKVYS ITYADDPNYF 700
IGIKFKNIPY EYDVKVPHLT FGVLNISDSM VPDVVVILKK FKSELFRMDV 750
TTSYTYMLSD EIYVANVSGV LSTYFKLYNA FYKEQITFGQ SRMFIPHITL 800
SFSNKKVVRI DSTRLNIDFI YLRKIKGDTV FDMAE 835
Length:835
Mass (Da):98,045
Last modified:July 5, 2004 - v1
Checksum:iC47E642ABA171312
GO

Sequence databases

Select the link destinations:
EMBL
GenBank
DDBJ
Links Updated
AY300923 Genomic RNA. Translation: AAQ74387.1.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBL
GenBank
DDBJ
Links Updated
AY300923 Genomic RNA. Translation: AAQ74387.1 .

3D structure databases

ModBasei Search...
MobiDBi Search...

Protocols and materials databases

Structural Biology Knowledgebase Search...

Family and domain databases

InterProi IPR011181. VP3_Rotav.
[Graphical view ]
Pfami PF06929. Rotavirus_VP3. 1 hit.
[Graphical view ]
PIRSFi PIRSF004015. LigT_rotavirus. 1 hit.
PROSITEi PS51589. SAM_MT56_VP3. 1 hit.
[Graphical view ]
ProtoNeti Search...

Publicationsi

  1. "Sequence analysis of the guanylyltransferase (VP3) of group A rotaviruses."
    Cook J.P., McCrae M.A.
    J. Gen. Virol. 85:929-932(2004) [PubMed] [Europe PMC] [Abstract]
    Cited for: NUCLEOTIDE SEQUENCE [GENOMIC RNA].

Entry informationi

Entry nameiVP3_ROTBU
AccessioniPrimary (citable) accession number: Q6WAT6
Entry historyi
Integrated into UniProtKB/Swiss-Prot: April 14, 2009
Last sequence update: July 5, 2004
Last modified: April 16, 2014
This is version 25 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programViral Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome, Multifunctional enzyme

Documents

  1. SIMILARITY comments
    Index of protein domains and families

External Data

Dasty 3

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