ID   IF1_CAUVC               Reviewed;          72 AA.
AC   Q9A5V4;
DT   27-MAR-2002, integrated into UniProtKB/Swiss-Prot.
DT   01-JUN-2001, sequence version 1.
DT   03-AUG-2022, entry version 106.
DE   RecName: Full=Translation initiation factor IF-1 {ECO:0000255|HAMAP-Rule:MF_00075};
GN   Name=infA {ECO:0000255|HAMAP-Rule:MF_00075}; OrderedLocusNames=CC_2343;
OS   Caulobacter vibrioides (strain ATCC 19089 / CB15) (Caulobacter crescentus).
OC   Bacteria; Proteobacteria; Alphaproteobacteria; Caulobacterales;
OC   Caulobacteraceae; Caulobacter.
OX   NCBI_TaxID=190650;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 19089 / CB15;
RX   PubMed=11259647; DOI=10.1073/pnas.061029298;
RA   Nierman W.C., Feldblyum T.V., Laub M.T., Paulsen I.T., Nelson K.E.,
RA   Eisen J.A., Heidelberg J.F., Alley M.R.K., Ohta N., Maddock J.R.,
RA   Potocka I., Nelson W.C., Newton A., Stephens C., Phadke N.D., Ely B.,
RA   DeBoy R.T., Dodson R.J., Durkin A.S., Gwinn M.L., Haft D.H., Kolonay J.F.,
RA   Smit J., Craven M.B., Khouri H.M., Shetty J., Berry K.J., Utterback T.R.,
RA   Tran K., Wolf A.M., Vamathevan J.J., Ermolaeva M.D., White O.,
RA   Salzberg S.L., Venter J.C., Shapiro L., Fraser C.M.;
RT   "Complete genome sequence of Caulobacter crescentus.";
RL   Proc. Natl. Acad. Sci. U.S.A. 98:4136-4141(2001).
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; AE005673; AAK24314.1; -; Genomic_DNA.
DR   PIR; F87539; F87539.
DR   RefSeq; NP_421146.1; NC_002696.2.
DR   RefSeq; WP_004617696.1; NC_002696.2.
DR   AlphaFoldDB; Q9A5V4; -.
DR   SMR; Q9A5V4; -.
DR   STRING; 190650.CC_2343; -.
DR   EnsemblBacteria; AAK24314; AAK24314; CC_2343.
DR   KEGG; ccr:CC_2343; -.
DR   PATRIC; fig|190650.5.peg.2364; -.
DR   eggNOG; COG0361; Bacteria.
DR   HOGENOM; CLU_151267_1_0_5; -.
DR   OMA; AHVSGKM; -.
DR   BioCyc; CAULO:CC2343-MON; -.
DR   Proteomes; UP000001816; Chromosome.
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; Reference proteome;
KW   RNA-binding; rRNA-binding.
FT   CHAIN           1..72
FT                   /note="Translation initiation factor IF-1"
FT                   /id="PRO_0000095766"
FT   DOMAIN          1..72
FT                   /note="S1-like"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00075"
SQ   SEQUENCE   72 AA;  8302 MW;  64A7628AAE79CF81 CRC64;
     MAKEELLEFP GTVSELLPNA TFRVKLENDH EIIAHTAGKM RKNRIRVLAG DKVLVEMTPY
     DLTKGRITYR FK