ID   IF1_TROW8               Reviewed;          73 AA.
AC   Q83I58;
DT   01-MAR-2004, integrated into UniProtKB/Swiss-Prot.
DT   01-JUN-2003, sequence version 1.
DT   25-MAY-2022, entry version 105.
DE   RecName: Full=Translation initiation factor IF-1 {ECO:0000255|HAMAP-Rule:MF_00075};
GN   Name=infA {ECO:0000255|HAMAP-Rule:MF_00075}; OrderedLocusNames=TW228;
OS   Tropheryma whipplei (strain TW08/27) (Whipple's bacillus).
OC   Bacteria; Actinobacteria; Micrococcales; Tropherymataceae; Tropheryma.
OX   NCBI_TaxID=218496;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=TW08/27;
RX   PubMed=12606174; DOI=10.1016/s0140-6736(03)12597-4;
RA   Bentley S.D., Maiwald M., Murphy L.D., Pallen M.J., Yeats C.A., Dover L.G.,
RA   Norbertczak H.T., Besra G.S., Quail M.A., Harris D.E., von Herbay A.,
RA   Goble A., Rutter S., Squares R., Squares S., Barrell B.G., Parkhill J.,
RA   Relman D.A.;
RT   "Sequencing and analysis of the genome of the Whipple's disease bacterium
RT   Tropheryma whipplei.";
RL   Lancet 361:637-644(2003).
CC   -!- FUNCTION: One of the essential components for the initiation of protein
CC       synthesis. Stabilizes the binding of IF-2 and IF-3 on the 30S subunit
CC       to which N-formylmethionyl-tRNA(fMet) subsequently binds. Helps
CC       modulate mRNA selection, yielding the 30S pre-initiation complex (PIC).
CC       Upon addition of the 50S ribosomal subunit IF-1, IF-2 and IF-3 are
CC       released leaving the mature 70S translation initiation complex.
CC       {ECO:0000255|HAMAP-Rule:MF_00075}.
CC   -!- SUBUNIT: Component of the 30S ribosomal translation pre-initiation
CC       complex which assembles on the 30S ribosome in the order IF-2 and IF-3,
CC       IF-1 and N-formylmethionyl-tRNA(fMet); mRNA recruitment can occur at
CC       any time during PIC assembly. {ECO:0000255|HAMAP-Rule:MF_00075}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00075}.
CC   -!- SIMILARITY: Belongs to the IF-1 family. {ECO:0000255|HAMAP-
CC       Rule:MF_00075}.
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DR   EMBL; BX251410; CAD66905.1; -; Genomic_DNA.
DR   RefSeq; WP_011096186.1; NC_004551.1.
DR   AlphaFoldDB; Q83I58; -.
DR   SMR; Q83I58; -.
DR   GeneID; 67388005; -.
DR   KEGG; tws:TW228; -.
DR   HOGENOM; CLU_151267_1_0_11; -.
DR   OMA; AHVSGKM; -.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0043022; F:ribosome binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0019843; F:rRNA binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0003743; F:translation initiation factor activity; IEA:UniProtKB-UniRule.
DR   CDD; cd04451; S1_IF1; 1.
DR   Gene3D; 2.40.50.140; -; 1.
DR   HAMAP; MF_00075; IF_1; 1.
DR   InterPro; IPR012340; NA-bd_OB-fold.
DR   InterPro; IPR006196; RNA-binding_domain_S1_IF1.
DR   InterPro; IPR004368; TIF_IF1.
DR   PANTHER; PTHR33370; PTHR33370; 1.
DR   Pfam; PF01176; eIF-1a; 1.
DR   SUPFAM; SSF50249; SSF50249; 1.
DR   TIGRFAMs; TIGR00008; infA; 1.
DR   PROSITE; PS50832; S1_IF1_TYPE; 1.
PE   3: Inferred from homology;
KW   Cytoplasm; Initiation factor; Protein biosynthesis; RNA-binding;
KW   rRNA-binding.
FT   CHAIN           1..73
FT                   /note="Translation initiation factor IF-1"
FT                   /id="PRO_0000095898"
FT   DOMAIN          1..73
FT                   /note="S1-like"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00075"
SQ   SEQUENCE   73 AA;  8376 MW;  5CA4578003276A7C CRC64;
     MAKKDGVIEL EGSVLEALPN ATFRVELSNG HKVLAHISGR MRQHYIRILP EDRVVVELSP
     YDLARGRIVY RYK