ID   IF4A_VANPO              Reviewed;         396 AA.
AC   A7TK55;
DT   13-NOV-2007, integrated into UniProtKB/Swiss-Prot.
DT   02-OCT-2007, sequence version 1.
DT   03-AUG-2022, entry version 66.
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=Kpol_1060p58;
OS   Vanderwaltozyma polyspora (strain ATCC 22028 / DSM 70294 / BCRC 21397 / CBS
OS   2163 / NBRC 10782 / NRRL Y-8283 / UCD 57-17) (Kluyveromyces polysporus).
OC   Eukaryota; Fungi; Dikarya; Ascomycota; Saccharomycotina; Saccharomycetes;
OC   Saccharomycetales; Saccharomycetaceae; Vanderwaltozyma.
OX   NCBI_TaxID=436907;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 22028 / DSM 70294 / BCRC 21397 / CBS 2163 / NBRC 10782 / NRRL
RC   Y-8283 / UCD 57-17;
RX   PubMed=17494770; DOI=10.1073/pnas.0608218104;
RA   Scannell D.R., Frank A.C., Conant G.C., Byrne K.P., Woolfit M., Wolfe K.H.;
RT   "Independent sorting-out of thousands of duplicated gene pairs in two yeast
RT   species descended from a whole-genome duplication.";
RL   Proc. Natl. Acad. Sci. U.S.A. 104:8397-8402(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; DS480405; EDO17401.1; -; Genomic_DNA.
DR   RefSeq; XP_001645259.1; XM_001645209.1.
DR   AlphaFoldDB; A7TK55; -.
DR   SMR; A7TK55; -.
DR   STRING; 436907.A7TK55; -.
DR   EnsemblFungi; EDO17401; EDO17401; Kpol_1060p58.
DR   GeneID; 5545619; -.
DR   KEGG; vpo:Kpol_1060p58; -.
DR   eggNOG; KOG0327; Eukaryota.
DR   HOGENOM; CLU_003041_1_0_1; -.
DR   InParanoid; A7TK55; -.
DR   OMA; EHKDGQR; -.
DR   OrthoDB; 726081at2759; -.
DR   PhylomeDB; A7TK55; -.
DR   Proteomes; UP000000267; Unassembled WGS sequence.
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   CDD; cd18046; DEADc_EIF4AII_EIF4AI_DDX2; 1.
DR   Gene3D; 3.40.50.300; -; 2.
DR   InterPro; IPR011545; DEAD/DEAH_box_helicase_dom.
DR   InterPro; IPR044728; EIF4A_DEADc.
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..396
FT                   /note="ATP-dependent RNA helicase eIF4A"
FT                   /id="PRO_0000310173"
FT   DOMAIN          54..223
FT                   /note="Helicase ATP-binding"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00541"
FT   DOMAIN          234..395
FT                   /note="Helicase C-terminal"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00542"
FT   MOTIF           23..51
FT                   /note="Q motif"
FT   MOTIF           171..174
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   396 AA;  44592 MW;  3AA878B6098F437D CRC64;
     MSAEGVSEIE ESQIQTNYDK VVYKFDDMNL KDELLKGVYG YGFEEPSAIQ QRAILPIVEE
     HDVLAQAQSG TGKTGTFSIA ALQRIDSSIK APQALILAPT RELALQIQKV VIALAFHMDV
     KVHACIGGTS FVEDTEGLKD AQIVVGTPGR VSDNIQRHRF KTDNIKMFIL DEADEMLSSG
     FREQIYQIFT MLPPTTQVVL LSATLPGDVL EVTTKFMRNP IRILVKKDEL TLEGIKQFYI
     NVEEEQYKFD CLSDLYDSIS VTQAVIFCNT RRKVEELTQK LTESNFTVSS IYSDLPQQER
     DVIMKEFRSG SSRILISTDL LARGIDVQQV SLVINYDLPT NKENYIHRIG RGGRFGRKGV
     AINFVTNEDV GAMREIEKFY STQIEELPAD VAEMFT