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Q99219 (YI31A_YEAST) Reviewed, UniProtKB/Swiss-Prot

Last modified April 16, 2014. Version 81. Feed History...

Clusters with 100%, 90%, 50% identity | Documents (3) | Third-party data text xml rdf/xml gff fasta
to top of pageNames·Attributes·General annotation·Ontologies·Alt products·Sequence annotation·Sequences·References·Cross-refs·Entry info·DocumentsCustomize order

Names and origin

Protein namesRecommended name:
Transposon Ty3-I Gag polyprotein
Alternative name(s):
Gag3
Transposon Ty3-2 protein A
Short name=TY3A

Cleaved into the following 3 chains:

  1. Capsid protein
    Short name=CA
    Alternative name(s):
    p24
  2. Spacer peptide p3
  3. Nucleocapsid protein p9
    Short name=NC
    Alternative name(s):
    p7
Gene names
Name:TY3A-I
Synonyms:YILWTy3-1 GAG
Ordered Locus Names:YIL082W
OrganismSaccharomyces cerevisiae (strain ATCC 204508 / S288c) (Baker's yeast) [Reference proteome]
Taxonomic identifier559292 [NCBI]
Taxonomic lineageEukaryotaFungiDikaryaAscomycotaSaccharomycotinaSaccharomycetesSaccharomycetalesSaccharomycetaceaeSaccharomyces

Protein attributes

Sequence length290 AA.
Sequence statusComplete.
Sequence processingThe displayed sequence is further processed into a mature form.
Protein existenceInferred from homology

General annotation (Comments)

Function

Capsid protein (CA) is the structural component of the virus-like particle (VLP), forming the shell that encapsulates the retrotransposons dimeric RNA genome.

Nucleocapsid protein p9 (NC) forms the nucleocore that coats the retro-elements dimeric RNA. Binds these RNAs through its zinc fingers By similarity. Promotes primer tRNA(i)-Met annealing to the multipartite primer-binding site (PBS), dimerization of Ty3 RNA and initiation of reverse transcription.

Subcellular location

Cytoplasm.

Domain

The N-terminal domain of NC, but not its zinc finger, is required for nucleoprotein complex formation and its chaperone activities.

Miscellaneous

Retrotransposons are mobile genetic entities that are able to replicate via an RNA intermediate and a reverse transcription step. In contrast to retroviruses, retrotransposons are non-infectious, lack an envelope and remain intracellular. Ty3 retrotransposons belong to the gypsy-like elements (metaviridae).

Sequence similarities

Contains 1 CCHC-type zinc finger.

Sequence caution

The sequence AAA35183.1 differs from that shown. Reason: Erroneous initiation.

Ontologies

Keywords
   Cellular componentCytoplasm
   Coding sequence diversityRibosomal frameshifting
   DomainZinc-finger
   LigandMetal-binding
Zinc
   PTMAcetylation
   Technical termComplete proteome
Reference proteome
Transposable element
Gene Ontology (GO)
   Biological_processtransposition, RNA-mediated

Inferred from mutant phenotype PubMed 17442718. Source: SGD

   Cellular_componentcytoplasm

Inferred from electronic annotation. Source: UniProtKB-SubCell

retrotransposon nucleocapsid

Inferred from direct assay PubMed 15956549. Source: SGD

   Molecular_functionDNA binding

Inferred from direct assay PubMed 21917850. Source: SGD

zinc ion binding

Inferred from electronic annotation. Source: InterPro

Complete GO annotation...

Alternative products

This entry describes 2 isoforms produced by ribosomal frameshifting. [Align] [Select]

Note: The Gag-Pol polyprotein is generated by a +1 ribosomal frameshift.
Isoform Transposon Ty3-I Gag polyprotein (identifier: Q99219-1)

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.
Note: Produced by conventional translation.
Isoform Transposon Ty3-I Gag-Pol polyprotein (identifier: Q7LHG5-1)

The sequence of this isoform can be found in the external entry Q7LHG5.
Isoforms of the same protein are often annotated in two different entries if their sequences differ significantly.
Note: Produced by +1 ribosomal frameshifting between codon Ala-285 and Val-286 of the YIL082W ORF.

Sequence annotation (Features)

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifier

Molecule processing

Initiator methionine11Removed By similarity
Chain2 – 290289Transposon Ty3-I Gag polyprotein
PRO_0000279376
Chain2 – 207206Capsid protein
PRO_0000279377
Peptide208 – 23326Spacer peptide p3
PRO_0000279378
Chain234 – 29057Nucleocapsid protein p9
PRO_0000279379

Regions

Zinc finger265 – 28218CCHC-type

Sites

Site207 – 2082Cleavage; by Ty3 protease
Site233 – 2342Cleavage; by Ty3 protease

Amino acid modifications

Modified residue21N-acetylserine By similarity

Sequences

Sequence LengthMass (Da)Tools
Isoform Transposon Ty3-I Gag polyprotein [UniParc].

Last modified November 1, 1996. Version 1.
Checksum: 5113F9717ADD196A

FASTA29034,100
        10         20         30         40         50         60 
MSFMDQIPGG GNYPKLPVEC LPNFPIQPSL TFRGRNDSHK LKNFISEIML NMSMISWPND 

        70         80         90        100        110        120 
ASRIVYCRRH LLNPAAQWAN DFVQEQGILE ITFDTFIQGL YQHFYKPPDI NKIFNAITQL 

       130        140        150        160        170        180 
SEAKLGIERL NQRFRKIWDR MPPDFMTEKA AIMTYTRLLT KETYNIVRMH KPETLKDAME 

       190        200        210        220        230        240 
EAYQTTALTE RFFPGFELDA DGDTIIGATT HLQEEYDSDY DSEDNLTQNR YVHTVRTRRS 

       250        260        270        280        290 
YNKPMSNHRN RRNNNASREE CIKNRLCFYC KKEGHRLNEC RARKASSNRS 

« Hide

Isoform Transposon Ty3-I Gag-Pol polyprotein [UniParc].

See Q7LHG5.

References

« Hide 'large scale' references
[1]"Ty3, a yeast retrotransposon associated with tRNA genes, has homology to animal retroviruses."
Hansen L.J., Chalker D.L., Sandmeyer S.B.
Mol. Cell. Biol. 8:5245-5256(1988) [PubMed] [Europe PMC] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA].
[2]"The nucleotide sequence of Saccharomyces cerevisiae chromosome IX."
Churcher C.M., Bowman S., Badcock K., Bankier A.T., Brown D., Chillingworth T., Connor R., Devlin K., Gentles S., Hamlin N., Harris D.E., Horsnell T., Hunt S., Jagels K., Jones M., Lye G., Moule S., Odell C. expand/collapse author list , Pearson D., Rajandream M.A., Rice P., Rowley N., Skelton J., Smith V., Walsh S.V., Whitehead S., Barrell B.G.
Nature 387:84-87(1997) [PubMed] [Europe PMC] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
Strain: ATCC 204508 / S288c.
[3]Saccharomyces Genome Database
Submitted (DEC-2009) to the EMBL/GenBank/DDBJ databases
Cited for: GENOME REANNOTATION.
Strain: ATCC 204508 / S288c.
[4]"Approaching a complete repository of sequence-verified protein-encoding clones for Saccharomyces cerevisiae."
Hu Y., Rolfs A., Bhullar B., Murthy T.V.S., Zhu C., Berger M.F., Camargo A.A., Kelley F., McCarron S., Jepson D., Richardson A., Raphael J., Moreira D., Taycher E., Zuo D., Mohr S., Kane M.F., Williamson J. expand/collapse author list , Simpson A.J.G., Bulyk M.L., Harlow E., Marsischky G., Kolodner R.D., LaBaer J.
Genome Res. 17:536-543(2007) [PubMed] [Europe PMC] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA].
Strain: ATCC 204508 / S288c.
[5]"Transposable elements and genome organization: a comprehensive survey of retrotransposons revealed by the complete Saccharomyces cerevisiae genome sequence."
Kim J.M., Vanguri S., Boeke J.D., Gabriel A., Voytas D.F.
Genome Res. 8:464-478(1998) [PubMed] [Europe PMC] [Abstract]
Cited for: NOMENCLATURE.
[6]"Happy together: the life and times of Ty retrotransposons and their hosts."
Lesage P., Todeschini A.L.
Cytogenet. Genome Res. 110:70-90(2005) [PubMed] [Europe PMC] [Abstract]
Cited for: REVIEW.
+Additional computationally mapped references.

Cross-references

Sequence databases

EMBL
GenBank
DDBJ
M23367 Genomic DNA. Translation: AAA35183.1. Different initiation.
Z46728 Genomic DNA. Translation: CAA86712.1.
AY557875 Genomic DNA. Translation: AAS56201.1.
BK006942 Genomic DNA. No translation available.
PIRS41555.

3D structure databases

ProteinModelPortalQ99219.
ModBaseSearch...
MobiDBSearch...

Protein-protein interaction databases

DIPDIP-8996N.
IntActQ99219. 1 interaction.
MINTMINT-394390.
STRING4932.YIL082W.

Proteomic databases

PaxDbQ99219.

Protocols and materials databases

StructuralBiologyKnowledgebaseSearch...

Genome annotation databases

EnsemblFungiYIL082W; YIL082W; YIL082W. [Q99219-1]

Organism-specific databases

CYGDYIL082w.
SGDS000001344. YIL082W.

Phylogenomic databases

eggNOGNOG242522.
GeneTreeENSGT00740000115124.
HOGENOMHOG000155559.
OrthoDBEOG7HF1TD.

Gene expression databases

GenevestigatorQ99219.

Family and domain databases

InterProIPR005162. Retrotrans_gag_dom.
IPR001878. Znf_CCHC.
[Graphical view]
PfamPF03732. Retrotrans_gag. 1 hit.
[Graphical view]
SMARTSM00343. ZnF_C2HC. 1 hit.
[Graphical view]
SUPFAMSSF57756. SSF57756. 1 hit.
PROSITEPS50158. ZF_CCHC. 1 hit.
[Graphical view]
ProtoNetSearch...

Entry information

Entry nameYI31A_YEAST
AccessionPrimary (citable) accession number: Q99219
Entry history
Integrated into UniProtKB/Swiss-Prot: March 6, 2007
Last sequence update: November 1, 1996
Last modified: April 16, 2014
This is version 81 of the entry and version 1 of the sequence. [Complete history]
Entry statusReviewed (UniProtKB/Swiss-Prot)
Annotation programFungal Protein Annotation Program

Relevant documents

Yeast chromosome IX

Yeast (Saccharomyces cerevisiae) chromosome IX: entries and gene names

Yeast

Yeast (Saccharomyces cerevisiae): entries, gene names and cross-references to SGD

SIMILARITY comments

Index of protein domains and families