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IF4A_PICST
ID   IF4A_PICST              Reviewed;         397 AA.
AC   A3GFI4;
DT   01-MAY-2007, integrated into UniProtKB/Swiss-Prot.
DT   03-APR-2007, sequence version 1.
DT   03-AUG-2022, entry version 79.
DE   RecName: Full=ATP-dependent RNA helicase eIF4A;
DE            EC=3.6.4.13;
DE   AltName: Full=Eukaryotic initiation factor 4A;
DE            Short=eIF-4A;
DE   AltName: Full=Translation initiation factor 1;
GN   Name=TIF1; Synonyms=TIF41; ORFNames=PICST_74636;
OS   Scheffersomyces stipitis (strain ATCC 58785 / CBS 6054 / NBRC 10063 / NRRL
OS   Y-11545) (Yeast) (Pichia stipitis).
OC   Eukaryota; Fungi; Dikarya; Ascomycota; Saccharomycotina; Saccharomycetes;
OC   Saccharomycetales; Debaryomycetaceae; Scheffersomyces.
OX   NCBI_TaxID=322104;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 58785 / CBS 6054 / NBRC 10063 / NRRL Y-11545;
RX   PubMed=17334359; DOI=10.1038/nbt1290;
RA   Jeffries T.W., Grigoriev I.V., Grimwood J., Laplaza J.M., Aerts A.,
RA   Salamov A., Schmutz J., Lindquist E., Dehal P., Shapiro H., Jin Y.-S.,
RA   Passoth V., Richardson P.M.;
RT   "Genome sequence of the lignocellulose-bioconverting and xylose-fermenting
RT   yeast Pichia stipitis.";
RL   Nat. Biotechnol. 25:319-326(2007).
CC   -!- FUNCTION: ATP-dependent RNA helicase which is a subunit of the eIF4F
CC       complex involved in cap recognition and is required for mRNA binding to
CC       ribosome. In the current model of translation initiation, eIF4A unwinds
CC       RNA secondary structures in the 5'-UTR of mRNAs which is necessary to
CC       allow efficient binding of the small ribosomal subunit, and subsequent
CC       scanning for the initiator codon (By similarity). {ECO:0000250}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=ATP + H2O = ADP + H(+) + phosphate; Xref=Rhea:RHEA:13065,
CC         ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:30616,
CC         ChEBI:CHEBI:43474, ChEBI:CHEBI:456216; EC=3.6.4.13;
CC   -!- SUBUNIT: Component of the eIF4F complex, which composition varies with
CC       external and internal environmental conditions. It is composed of at
CC       least eIF4A, eIF4E and eIF4G (By similarity). {ECO:0000250}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000250}.
CC   -!- DOMAIN: The Q motif is unique to and characteristic of the DEAD box
CC       family of RNA helicases and controls ATP binding and hydrolysis.
CC   -!- SIMILARITY: Belongs to the DEAD box helicase family. eIF4A subfamily.
CC       {ECO:0000305}.
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DR   EMBL; AAVQ01000001; EAZ63353.1; -; Genomic_DNA.
DR   RefSeq; XP_001387376.1; XM_001387339.1.
DR   AlphaFoldDB; A3GFI4; -.
DR   SMR; A3GFI4; -.
DR   STRING; 4924.XP_001387376.1; -.
DR   PRIDE; A3GFI4; -.
DR   EnsemblFungi; EAZ63353; EAZ63353; PICST_74636.
DR   GeneID; 4851033; -.
DR   KEGG; pic:PICST_74636; -.
DR   eggNOG; KOG0327; Eukaryota.
DR   HOGENOM; CLU_003041_1_0_1; -.
DR   InParanoid; A3GFI4; -.
DR   OMA; EHKDGQR; -.
DR   OrthoDB; 726081at2759; -.
DR   Proteomes; UP000002258; Chromosome 1.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0005524; F:ATP binding; IEA:UniProtKB-KW.
DR   GO; GO:0016887; F:ATP hydrolysis activity; IEA:RHEA.
DR   GO; GO:0003723; F:RNA binding; IEA:UniProtKB-KW.
DR   GO; GO:0003724; F:RNA helicase activity; IEA:UniProtKB-EC.
DR   GO; GO:0003743; F:translation initiation factor activity; IEA:UniProtKB-KW.
DR   Gene3D; 3.40.50.300; -; 2.
DR   InterPro; IPR011545; DEAD/DEAH_box_helicase_dom.
DR   InterPro; IPR014001; Helicase_ATP-bd.
DR   InterPro; IPR001650; Helicase_C.
DR   InterPro; IPR027417; P-loop_NTPase.
DR   InterPro; IPR000629; RNA-helicase_DEAD-box_CS.
DR   InterPro; IPR014014; RNA_helicase_DEAD_Q_motif.
DR   Pfam; PF00270; DEAD; 1.
DR   Pfam; PF00271; Helicase_C; 1.
DR   SMART; SM00487; DEXDc; 1.
DR   SMART; SM00490; HELICc; 1.
DR   SUPFAM; SSF52540; SSF52540; 1.
DR   PROSITE; PS00039; DEAD_ATP_HELICASE; 1.
DR   PROSITE; PS51192; HELICASE_ATP_BIND_1; 1.
DR   PROSITE; PS51194; HELICASE_CTER; 1.
DR   PROSITE; PS51195; Q_MOTIF; 1.
PE   3: Inferred from homology;
KW   ATP-binding; Cytoplasm; Helicase; Hydrolase; Initiation factor;
KW   Nucleotide-binding; Protein biosynthesis; Reference proteome; RNA-binding.
FT   CHAIN           1..397
FT                   /note="ATP-dependent RNA helicase eIF4A"
FT                   /id="PRO_0000285135"
FT   DOMAIN          54..224
FT                   /note="Helicase ATP-binding"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00541"
FT   DOMAIN          235..396
FT                   /note="Helicase C-terminal"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00542"
FT   MOTIF           23..51
FT                   /note="Q motif"
FT   MOTIF           172..175
FT                   /note="DEAD box"
FT   BINDING         67..74
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00541"
SQ   SEQUENCE   397 AA;  44720 MW;  A6C77BBE47809EED CRC64;
     MSSDGIKEID SDLIETNYDN VVYKFDDLNL KPNIVRGIFG YGYETPSAIQ QRAILPITEG
     RDVLAQAQSG TGKTATFTIS ALQRIDENEK STQALILAPT RELALQIKNV ITSIGLYLNV
     TVHASIGGTS MQDDIEAFRS GVQVVVGTPG RVFDMIERRY FKTEKVKMFI MDEADEMLSS
     GFKEQIYNIF RLLPETTQVV LLSATMPQDV LEVTTKFMNN PVRILVKKDE LTLEGIKQFY
     INVELEDYKF DCLCDLYDSI SVTQAVIFCN TRSKVEFLTT KLKAENFTVS AIHADLPQAE
     RDTIMKEFRS GSSRILIATD LLARGIDVQQ VSLVINYDLP SNKENYIHRI GRGGRFGRKG
     VAINFVTERD VGMMREIEQF YSTQIEEMPA DIGALFN
 
 
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