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Q65526 (VP3_ROTBS) Reviewed, UniProtKB/Swiss-Prot

Last modified April 16, 2014. Version 37. Feed History...

Clusters with 100%, 90%, 50% identity | Documents (1) | Third-party data text xml rdf/xml gff fasta
to top of pageNames·Attributes·General annotation·Ontologies·Sequence annotation·Sequences·References·Cross-refs·Entry info·DocumentsCustomize order

Names and origin

Protein namesRecommended name:
Protein VP3

Including the following 2 domains:

  1. mRNA guanylyltransferase
    EC=2.7.7.50
  2. mRNA (guanine-N(7)-)-methyltransferase
    EC=2.1.1.56
OrganismRotavirus C (isolate Cow/Japan/Shintoku/1991) (RV-C)
Taxonomic identifier33723 [NCBI]
Taxonomic lineageVirusesdsRNA virusesReoviridaeSedoreovirinaeRotavirus
Virus hostBos taurus (Bovine) [TaxID: 9913]

Protein attributes

Sequence length695 AA.
Sequence statusComplete.
Protein existenceInferred from homology

General annotation (Comments)

Function

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. 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 activity

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.

Subunit structure

Interacts with VP1 Potential. Interacts with VP2.

Subcellular location

Virion Potential. 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 Potential.

Sequence similarities

Belongs to the rotavirus VP3 family.

Sequence annotation (Features)

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifier

Molecule processing

Chain1 – 695695Protein VP3
PRO_0000369871

Sequences

Sequence LengthMass (Da)Tools
Q65526 [UniParc].

Last modified November 1, 1996. Version 1.
Checksum: 1EF9F1ECFFAD3328

FASTA69581,517
        10         20         30         40         50         60 
MRVLGLFERG NNLNFADTYV YTWNKQYSFH ENAFLISNQV ATTIIIYLDK EIVNQVNEAF 

        70         80         90        100        110        120 
NLLNSNGIPA LIIKSDHIGI FTSSNFTYDW QNKIIYFHEY TYYKNNEFIV SDEFWLNTSI 

       130        140        150        160        170        180 
QDLLPYKVLF FERGLRKLYE GEEYILYNTA TDDDIIYKYI YEKDVIMSGN DYSKLYDTKS 

       190        200        210        220        230        240 
FKNFVHFMRL LRMRFAVPFD QLSNRVTRSR AFAKSKIHIG LRNESIPQAL DNIHHYWINY 

       250        260        270        280        290        300 
SANGMRVSEL KGSGSYSEKK ISEFDIGQFK NYMNFLTLMF YIKNMKKKPS CTIIGAAPGY 

       310        320        330        340        350        360 
WIPSMKKYFN IVTYDDKHVD STEHYNRYFT DDDIASVKTN GVYIDVRSDF KNYDWKKRRQ 

       370        380        390        400        410        420 
LVEEETMRWL SITYKLLENR YVEAVLLKMT AMDIEIPDGY FVHFPTTYRK SEYYLLVDKQ 

       430        440        450        460        470        480 
TVKRPKIKIT KSLAYGAINT IFSDNVFISG KYSLKGKTEG VLALYCLSNT INPKEKVVQY 

       490        500        510        520        530        540 
ANSFSGTCMT VRLNNTYILN KIIDFKTNAD YTFLPSDFQC SIKTVLTSYR GYAGVFGYAI 

       550        560        570        580        590        600 
TKDLKSDGNN HIYIIPNARD DDNFDTFASH LGLSRYSHSK RFSESATTMS GYLFRDMVSG 

       610        620        630        640        650        660 
KENMEDTDTE NLASGHVFNA IAHYRFDYTY DIVGWLKLHK MRKFRVKSNI YGEHTDDEIR 

       670        680        690 
NAIEAAYVYY LLDGDEVGKE YAKRIMEIWD VQTWG 

« Hide

References

[1]"Sequence analysis of VP3 and VP4 genes of a bovine group C rotavirus: molecular evidence for a new P type."
Jiang B., Gentsch J.R., Tsunemitsu H., Saif L.J., Glass R.I.
Submitted (MAY-1995) to the EMBL/GenBank/DDBJ databases
Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA].

Cross-references

Sequence databases

EMBL
GenBank
DDBJ
U26552 Genomic DNA. Translation: AAB01673.1.

3D structure databases

ModBaseSearch...
MobiDBSearch...

Protocols and materials databases

StructuralBiologyKnowledgebaseSearch...

Family and domain databases

InterProIPR011181. VP3_Rotav.
[Graphical view]
PfamPF06929. Rotavirus_VP3. 1 hit.
[Graphical view]
PIRSFPIRSF004015. LigT_rotavirus. 1 hit.
PROSITEPS51589. SAM_MT56_VP3. 1 hit.
[Graphical view]
ProtoNetSearch...

Entry information

Entry nameVP3_ROTBS
AccessionPrimary (citable) accession number: Q65526
Entry history
Integrated into UniProtKB/Swiss-Prot: April 14, 2009
Last sequence update: November 1, 1996
Last modified: April 16, 2014
This is version 37 of the entry and version 1 of the sequence. [Complete history]
Entry statusReviewed (UniProtKB/Swiss-Prot)
Annotation programViral Protein Annotation Program

Relevant documents

SIMILARITY comments

Index of protein domains and families