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Q03612

- YE11B_YEAST

UniProt

Q03612 - YE11B_YEAST

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Protein

Transposon Ty1-ER1 Gag-Pol polyprotein

Gene

TY1B-ER1

Organism
Saccharomyces cerevisiae (strain ATCC 204508 / S288c) (Baker's yeast)
Status
Reviewed - Annotation score: 5 out of 5- Protein inferred from homologyi

Functioni

Capsid protein (CA) is the structural component of the virus-like particle (VLP), forming the shell that encapsulates the retrotransposons dimeric RNA genome. The particles are assembled from trimer-clustered units and there are holes in the capsid shells that allow for the diffusion of macromolecules. CA has also nucleocapsid-like chaperone activity, promoting primer tRNA(i)-Met annealing to the multipartite primer-binding site (PBS), dimerization of Ty1 RNA and initiation of reverse transcription (By similarity).By similarity
The aspartyl protease (PR) mediates the proteolytic cleavages of the Gag and Gag-Pol polyproteins after assembly of the VLP.By similarity
Reverse transcriptase/ribonuclease H (RT) is a multifunctional enzyme that catalyzes the conversion of the retro-elements RNA genome into dsDNA within the VLP. The enzyme displays a DNA polymerase activity that can copy either DNA or RNA templates, and a ribonuclease H (RNase H) activity that cleaves the RNA strand of RNA-DNA heteroduplexes during plus-strand synthesis and hydrolyzes RNA primers. The conversion leads to a linear dsDNA copy of the retrotransposon that includes long terminal repeats (LTRs) at both ends (By similarity).By similarity
Integrase (IN) targets the VLP to the nucleus, where a subparticle preintegration complex (PIC) containing at least integrase and the newly synthesized dsDNA copy of the retrotransposon must transit the nuclear membrane. Once in the nucleus, integrase performs the integration of the dsDNA into the host genome (By similarity).By similarity

Catalytic activityi

Deoxynucleoside triphosphate + DNA(n) = diphosphate + DNA(n+1).
Endonucleolytic cleavage to 5'-phosphomonoester.

Sites

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Sitei401 – 4022Cleavage; by Ty1 proteaseBy similarity
Active sitei461 – 4611For protease activity; shared with dimeric partnerPROSITE-ProRule annotation
Sitei582 – 5832Cleavage; by Ty1 proteaseBy similarity
Metal bindingi671 – 6711Magnesium; catalytic; for integrase activityPROSITE-ProRule annotation
Metal bindingi736 – 7361Magnesium; catalytic; for integrase activityPROSITE-ProRule annotation
Sitei1217 – 12182Cleavage; by Ty1 proteaseBy similarity
Metal bindingi1346 – 13461Magnesium; catalytic; for reverse transcriptase activityPROSITE-ProRule annotation
Metal bindingi1427 – 14271Magnesium; catalytic; for reverse transcriptase activityPROSITE-ProRule annotation
Metal bindingi1428 – 14281Magnesium; catalytic; for reverse transcriptase activityPROSITE-ProRule annotation
Metal bindingi1610 – 16101Magnesium; catalytic; for RNase H activityPROSITE-ProRule annotation
Metal bindingi1652 – 16521Magnesium; catalytic; for RNase H activityPROSITE-ProRule annotation
Metal bindingi1685 – 16851Magnesium; catalytic; for RNase H activityPROSITE-ProRule annotation

GO - Molecular functioni

  1. aspartic-type endopeptidase activity Source: UniProtKB-KW
  2. ATP binding Source: UniProtKB-KW
  3. DNA binding Source: UniProtKB-KW
  4. DNA-directed DNA polymerase activity Source: SGD
  5. metal ion binding Source: UniProtKB-KW
  6. peptidase activity Source: SGD
  7. ribonuclease activity Source: SGD
  8. RNA binding Source: SGD
  9. RNA-directed DNA polymerase activity Source: SGD
  10. RNA-DNA hybrid ribonuclease activity Source: UniProtKB-EC

GO - Biological processi

  1. DNA-dependent DNA replication Source: GOC
  2. DNA integration Source: UniProtKB-KW
  3. DNA recombination Source: UniProtKB-KW
  4. RNA-dependent DNA replication Source: GOC
  5. RNA phosphodiester bond hydrolysis Source: GOC
  6. transposition, RNA-mediated Source: SGD
  7. viral release from host cell Source: UniProtKB-KW
Complete GO annotation...

Keywords - Molecular functioni

Aspartyl protease, DNA-directed DNA polymerase, Endonuclease, Hydrolase, Nuclease, Nucleotidyltransferase, Protease, RNA-directed DNA polymerase, Transferase

Keywords - Biological processi

DNA integration, DNA recombination, Transposition, Virion maturation, Virus exit from host cell

Keywords - Ligandi

ATP-binding, DNA-binding, Magnesium, Metal-binding, Nucleotide-binding, RNA-binding, Zinc

Names & Taxonomyi

Protein namesi
Recommended name:
Transposon Ty1-ER1 Gag-Pol polyprotein
Alternative name(s):
Gag-Pol-p199
TY1A-TY1B
Transposon Ty1 TYA-TYB polyprotein
p190
Cleaved into the following 4 chains:
Capsid protein
Short name:
CA
Alternative name(s):
Gag-p45
p54
Ty1 protease (EC:3.4.23.-)
Short name:
PR
Alternative name(s):
Pol-p20
p23
Integrase
Short name:
IN
Alternative name(s):
Pol-p71
p84
p90
Alternative name(s):
Pol-p63
p60
Gene namesi
Name:TY1B-ER1
Synonyms:YERCTy1-1 POL
Ordered Locus Names:YER138C
OrganismiSaccharomyces cerevisiae (strain ATCC 204508 / S288c) (Baker's yeast)
Taxonomic identifieri559292 [NCBI]
Taxonomic lineageiEukaryotaFungiDikaryaAscomycotaSaccharomycotinaSaccharomycetesSaccharomycetalesSaccharomycetaceaeSaccharomyces
ProteomesiUP000002311: Chromosome V

Organism-specific databases

CYGDiYER138c.
SGDiS000000940. YER138C.

Subcellular locationi

Cytoplasm. Nucleus By similarity

GO - Cellular componenti

  1. cytoplasm Source: UniProtKB-KW
  2. nucleus Source: SGD
  3. retrotransposon nucleocapsid Source: SGD
Complete GO annotation...

Keywords - Cellular componenti

Cytoplasm, Nucleus

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 17551755Transposon Ty1-ER1 Gag-Pol polyproteinPRO_0000279043Add
BLAST
Chaini1 – 401401Capsid proteinBy similarityPRO_0000279044Add
BLAST
Chaini402 – 582181Ty1 proteaseBy similarityPRO_0000279045Add
BLAST
Chaini583 – 1217635IntegraseBy similarityPRO_0000279046Add
BLAST
Chaini1218 – 1755538Reverse transcriptase/ribonuclease HBy similarityPRO_0000279047Add
BLAST

Amino acid modifications

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Modified residuei416 – 4161PhosphoserineBy similarity

Post-translational modificationi

Initially, virus-like particles (VLPs) are composed of the structural unprocessed proteins Gag and Gag-Pol, and contain also the host initiator methionine tRNA (tRNA(i)-Met) which serves as a primer for minus-strand DNA synthesis, and a dimer of genomic Ty RNA. Processing of the polyproteins occurs within the particle and proceeds by an ordered pathway, called maturation. First, the protease (PR) is released by autocatalytic cleavage of the Gag-Pol polyprotein yielding capsid protein p45 and a Pol-p154 precursor protein. This cleavage is a prerequisite for subsequent processing of Pol-p154 at the remaining sites to release the mature structural and catalytic proteins. Maturation takes place prior to the RT reaction and is required to produce transposition-competent VLPs (By similarity).By similarity

Keywords - PTMi

Phosphoprotein

Proteomic databases

MaxQBiQ03612.

Expressioni

Gene expression databases

GenevestigatoriQ03612.

Interactioni

Subunit structurei

The capsid protein forms a homotrimer, from which the VLPs are assembled. The protease is a homodimer, whose active site consists of two apposed aspartic acid residues (By similarity).By similarity

Protein-protein interaction databases

BioGridi36885. 14 interactions.
DIPiDIP-8790N.
IntActiQ03612. 4 interactions.
MINTiMINT-692519.
STRINGi4932.YER138C.

Structurei

3D structure databases

ProteinModelPortaliQ03612.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Domains and Repeats

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Domaini660 – 835176Integrase catalyticPROSITE-ProRule annotationAdd
BLAST
Domaini1338 – 1476139Reverse transcriptase Ty1/copia-typeAdd
BLAST
Domaini1610 – 1752143RNase H Ty1/copia-typeAdd
BLAST

Region

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Regioni299 – 401103RNA-bindingBy similarityAdd
BLAST
Regioni583 – 64058Integrase-type zinc finger-likeAdd
BLAST

Motif

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Motifi1178 – 121235Bipartite nuclear localization signalBy similarityAdd
BLAST

Compositional bias

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Compositional biasi64 – 14683Pro-richAdd
BLAST

Domaini

The C-terminal RNA-binding region of CA is sufficient for all its nucleocapsid-like chaperone activities.By similarity
Integrase core domain contains the D-x(n)-D-x(35)-E motif, named for the phylogenetically conserved glutamic acid and aspartic acid residues and the invariant 35 amino acid spacing between the second and third acidic residues. Each acidic residue of the D,D(35)E motif is independently essential for the 3'-processing and strand transfer activities of purified integrase protein (By similarity).By similarity

Sequence similaritiesi

Contains 1 integrase catalytic domain.PROSITE-ProRule annotation
Contains 1 peptidase A11 domain.Curated

Keywords - Domaini

Zinc-finger

Phylogenomic databases

GeneTreeiENSGT00730000111602.
HOGENOMiHOG000280731.
InParanoidiQ03612.
OrthoDBiEOG7TJ3S3.

Family and domain databases

Gene3Di3.30.420.10. 1 hit.
InterProiIPR001969. Aspartic_peptidase_AS.
IPR001584. Integrase_cat-core.
IPR015820. Retrotransposon_Ty1A_N.
IPR012337. RNaseH-like_dom.
IPR013103. RVT_2.
[Graphical view]
PfamiPF00665. rve. 1 hit.
PF07727. RVT_2. 1 hit.
PF01021. TYA. 1 hit.
[Graphical view]
SUPFAMiSSF53098. SSF53098. 1 hit.
PROSITEiPS00141. ASP_PROTEASE. 1 hit.
PS50994. INTEGRASE. 1 hit.
[Graphical view]

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 ribosomal frameshifting. Align

Note: The Gag-Pol polyprotein is generated by a +1 ribosomal frameshift. The ratio of Gag:Gag-Pol varies between 20:1 and 5:1 (By similarity).By similarity

Isoform Transposon Ty1-ER1 Gag-Pol polyprotein (identifier: Q03612-1) [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
MESQQLSQHS PISHGSACAS VTSKEVHTNQ DPLDVSASKT EECEKASTKA
60 70 80 90 100
NSQQTTTPAS SAVPENPHHA SPQPASVPPP QNGPYPQQCM MTQNQANPSG
110 120 130 140 150
WSFYGHPSMI PYTPYQMSPM YFPPGPQSQF PQYPSSVGTP LSTPSPESGN
160 170 180 190 200
TFTDSSSADS DMTSTKKYVR PPPMLTSPND FPNWVKTYIK FLQNSNLGGI
210 220 230 240 250
IPTVNGKPVR QITDDELTFL YNTFQIFAPS QFLPTWVKDI LSVDYTDIMK
260 270 280 290 300
ILSKSIEKMQ SDTQEANDIV TLANLQYNGS TPADAFETKV TNIIDRLNNN
310 320 330 340 350
GIHINNKVAC QLIMRGLSGE YKFLRYTRHR HLNMTVAELF LDIHAIYEEQ
360 370 380 390 400
QGSRNSKPNY RRNLSDEKND SRSYTNTTKP KVIARNPQKT NNSKSKTARA
410 420 430 440 450
HNVSTSNNSP STDNDSISKS TTEPIQLNNK HDLHLGQELT ESTVNHTNHS
460 470 480 490 500
DDELPGHLLL DSGASRTLIR SAHHIHSASS NPDINVVDAQ KRNIPINAIG
510 520 530 540 550
DLQFHFQDNT KTSIKVLHTP NIAYDLLSLN ELAAVDITAC FTKNVLERSD
560 570 580 590 600
GTVLAPIVKY GDFYWVSKKY LLPSNISVPT INNVHTSEST RKYPYPFIHR
610 620 630 640 650
MLAHANAQTI RYSLKNNTIT YFNESDVDWS SAIDYQCPDC LIGKSTKHRH
660 670 680 690 700
IKGSRLKYQN SYEPFQYLHT DIFGPVHNLP KSAPSYFISF TDETTKFRWV
710 720 730 740 750
YPLHDRREDS ILDVFTTILA FIKNQFQASV LVIQMDRGSE YTNRTLHKFL
760 770 780 790 800
EKNGITPCYT TTADSRAHGV AERLNRTLLD DCRTQLQCSG LPNHLWFSAI
810 820 830 840 850
EFSTIVRNSL ASPKSKKSAR QHAGLAGLDI STLLPFGQPV IVNDHNPNSK
860 870 880 890 900
IHPRGIPGYA LHPSRNSYGY IIYLPSLKKT VDTTNYVILQ GKESRLDQFN
910 920 930 940 950
YDALTFDEDL NRLTASYQSF IASNEIQQSD DLNIESDHDF QSDIELHPEQ
960 970 980 990 1000
PRNVLSKAVS PTDSTPPSTH TEDSKRVSKT NIRAPREVDP NISESNILPS
1010 1020 1030 1040 1050
KKRSSTPQIS NIESTGSGGM HKLNVPLLAP MSQSNTHESS HASKSKDFRH
1060 1070 1080 1090 1100
SDSYSENETN HTNVPISSTG GTNNKTVPQI SDQETEKRII HRSPSIDASP
1110 1120 1130 1140 1150
PENNSSHNIV PIKTPTTVSE QNTEESIIAD LPLPDLPPES PTEFPDPFKE
1160 1170 1180 1190 1200
LPPINSHQTN SSLGGIGDSN AYTTINSKKR SLEDNETEIK VSRDTWNTKN
1210 1220 1230 1240 1250
MRSLEPPRSK KRIHLIAAVK AVKSIKPIRT TLRYDEAITY NKDIKEKEKY
1260 1270 1280 1290 1300
IEAYHKEVNQ LLKMKTWDTD EYYDRKEIDP KRVINSMFIF NKKRDGTHKA
1310 1320 1330 1340 1350
RFVARGDIQH PDTYDSGMQS NTVHHYALMT SLSLALDNNY YITQLDISSA
1360 1370 1380 1390 1400
YLYADIKEEL YIRPPPHLGM NDKLIRLKKS LYGLKQSGAN WYETIKSYLI
1410 1420 1430 1440 1450
KQCGMEEVRG WSCVFKNSQV TICLFVDDMI LFSKDLNANK KIITTLKKQY
1460 1470 1480 1490 1500
DTKIINLGES DNEIQYDILG LEIKYQRGKY MKLGMENSLT EKIPKLNVPL
1510 1520 1530 1540 1550
NPKGRKLSAP GQPGLYIDQD ELEIDEDEYK EKVHEMQKLI GLASYVGYKF
1560 1570 1580 1590 1600
RFDLLYYINT LAQHILFPSR QVLDMTYELI QFMWDTRDKQ LIWHKNKPTE
1610 1620 1630 1640 1650
PDNKLVAISD ASYGNQPYYK SQIGNIYLLN GKVIGGKSTK ASLTCTSTTE
1660 1670 1680 1690 1700
AEIHAISESV PLLNNLSYLI QELNKKPIIK GLLTDSRSTI SIIKSTNEEK
1710 1720 1730 1740 1750
FRNRFFGTKA MRLRDEVSGN NLYVYYIETK KNIADVMTKP LPIKTFKLLT

NKWIH

Note: Produced by +1 ribosomal frameshifting between codon Leu-435 and Gly-436 of the YER137C-A ORF.

Length:1,755
Mass (Da):198,562
Last modified:November 1, 1996 - v1
Checksum:i6EB17ED89FF1F6FB
GO
Isoform Transposon Ty1-ER1 Gag polyprotein (identifier: P0CX71-1) [UniParc]FASTAAdd to Basket

The sequence of this isoform can be found in the external entry P0CX71.
Isoforms of the same protein are often annotated in two different entries if their sequences differ significantly.

Note: Produced by conventional translation.

Length:440
Mass (Da):48,953
GO

Sequence databases

Select the link destinations:
EMBL
GenBank
DDBJ
Links Updated
U18917 Genomic DNA. Translation: AAB64665.1.
BK006939 Genomic DNA. Translation: DAA07797.1.
PIRiS50641.
RefSeqiNP_011064.3. NM_001179028.3. [Q03612-1]

Genome annotation databases

EnsemblFungiiYER138C; YER138C; YER138C. [Q03612-1]
GeneIDi856879.
KEGGisce:YER138C.

Keywords - Coding sequence diversityi

Ribosomal frameshifting

Cross-referencesi

Sequence databases

Select the link destinations:
EMBL
GenBank
DDBJ
Links Updated
U18917 Genomic DNA. Translation: AAB64665.1 .
BK006939 Genomic DNA. Translation: DAA07797.1 .
PIRi S50641.
RefSeqi NP_011064.3. NM_001179028.3. [Q03612-1 ]

3D structure databases

ProteinModelPortali Q03612.
ModBasei Search...
MobiDBi Search...

Protein-protein interaction databases

BioGridi 36885. 14 interactions.
DIPi DIP-8790N.
IntActi Q03612. 4 interactions.
MINTi MINT-692519.
STRINGi 4932.YER138C.

Proteomic databases

MaxQBi Q03612.

Protocols and materials databases

Structural Biology Knowledgebase Search...

Genome annotation databases

EnsemblFungii YER138C ; YER138C ; YER138C . [Q03612-1 ]
GeneIDi 856879.
KEGGi sce:YER138C.

Organism-specific databases

CYGDi YER138c.
SGDi S000000940. YER138C.

Phylogenomic databases

GeneTreei ENSGT00730000111602.
HOGENOMi HOG000280731.
InParanoidi Q03612.
OrthoDBi EOG7TJ3S3.

Miscellaneous databases

NextBioi 983260.

Gene expression databases

Genevestigatori Q03612.

Family and domain databases

Gene3Di 3.30.420.10. 1 hit.
InterProi IPR001969. Aspartic_peptidase_AS.
IPR001584. Integrase_cat-core.
IPR015820. Retrotransposon_Ty1A_N.
IPR012337. RNaseH-like_dom.
IPR013103. RVT_2.
[Graphical view ]
Pfami PF00665. rve. 1 hit.
PF07727. RVT_2. 1 hit.
PF01021. TYA. 1 hit.
[Graphical view ]
SUPFAMi SSF53098. SSF53098. 1 hit.
PROSITEi PS00141. ASP_PROTEASE. 1 hit.
PS50994. INTEGRASE. 1 hit.
[Graphical view ]
ProtoNeti Search...

Publicationsi

« Hide 'large scale' publications
  1. Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
    Strain: ATCC 204508 / S288c.
  2. Cited for: GENOME REANNOTATION.
    Strain: ATCC 204508 / S288c.
  3. "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.
  4. "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.
  5. "Reverse transcriptase and integrase of the Saccharomyces cerevisiae Ty1 element."
    Wilhelm F.-X., Wilhelm M., Gabriel A.
    Cytogenet. Genome Res. 110:269-287(2005) [PubMed] [Europe PMC] [Abstract]
    Cited for: REVIEW, DOMAINS.

Entry informationi

Entry nameiYE11B_YEAST
AccessioniPrimary (citable) accession number: Q03612
Secondary accession number(s): D3DM43
Entry historyi
Integrated into UniProtKB/Swiss-Prot: March 6, 2007
Last sequence update: November 1, 1996
Last modified: October 29, 2014
This is version 111 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programFungal Protein Annotation Program

Miscellaneousi

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. Ty1 retrotransposons belong to the copia elements (pseudoviridae).

Keywords - Technical termi

Complete proteome, Multifunctional enzyme, Reference proteome, Transposable element

Documents

  1. Peptidase families
    Classification of peptidase families and list of entries
  2. SIMILARITY comments
    Index of protein domains and families
  3. Yeast
    Yeast (Saccharomyces cerevisiae): entries, gene names and cross-references to SGD
  4. Yeast chromosome V
    Yeast (Saccharomyces cerevisiae) chromosome V: entries and gene names

External Data

Dasty 3