ID   IF1_CHLPN               Reviewed;          73 AA.
AC   Q9Z9A8; Q9JQK4;
DT   30-MAY-2000, integrated into UniProtKB/Swiss-Prot.
DT   01-MAY-1999, sequence version 1.
DT   25-MAY-2022, entry version 131.
DE   RecName: Full=Translation initiation factor IF-1 {ECO:0000255|HAMAP-Rule:MF_00075};
GN   Name=infA {ECO:0000255|HAMAP-Rule:MF_00075};
GN   OrderedLocusNames=CPn_0073, CP_0702, CpB0073;
OS   Chlamydia pneumoniae (Chlamydophila pneumoniae).
OC   Bacteria; Chlamydiae; Chlamydiales; Chlamydiaceae;
OC   Chlamydia/Chlamydophila group; Chlamydia.
OX   NCBI_TaxID=83558;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=CWL029;
RX   PubMed=10192388; DOI=10.1038/7716;
RA   Kalman S., Mitchell W.P., Marathe R., Lammel C.J., Fan J., Hyman R.W.,
RA   Olinger L., Grimwood J., Davis R.W., Stephens R.S.;
RT   "Comparative genomes of Chlamydia pneumoniae and C. trachomatis.";
RL   Nat. Genet. 21:385-389(1999).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=AR39;
RX   PubMed=10684935; DOI=10.1093/nar/28.6.1397;
RA   Read T.D., Brunham R.C., Shen C., Gill S.R., Heidelberg J.F., White O.,
RA   Hickey E.K., Peterson J.D., Utterback T.R., Berry K.J., Bass S.,
RA   Linher K.D., Weidman J.F., Khouri H.M., Craven B., Bowman C., Dodson R.J.,
RA   Gwinn M.L., Nelson W.C., DeBoy R.T., Kolonay J.F., McClarty G.,
RA   Salzberg S.L., Eisen J.A., Fraser C.M.;
RT   "Genome sequences of Chlamydia trachomatis MoPn and Chlamydia pneumoniae
RT   AR39.";
RL   Nucleic Acids Res. 28:1397-1406(2000).
RN   [3]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=J138;
RX   PubMed=10871362; DOI=10.1093/nar/28.12.2311;
RA   Shirai M., Hirakawa H., Kimoto M., Tabuchi M., Kishi F., Ouchi K.,
RA   Shiba T., Ishii K., Hattori M., Kuhara S., Nakazawa T.;
RT   "Comparison of whole genome sequences of Chlamydia pneumoniae J138 from
RT   Japan and CWL029 from USA.";
RL   Nucleic Acids Res. 28:2311-2314(2000).
RN   [4]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=TW-183;
RA   Geng M.M., Schuhmacher A., Muehldorfer I., Bensch K.W., Schaefer K.P.,
RA   Schneider S., Pohl T., Essig A., Marre R., Melchers K.;
RT   "The genome sequence of Chlamydia pneumoniae TW183 and comparison with
RT   other Chlamydia strains based on whole genome sequence analysis.";
RL   Submitted (MAY-2002) to the EMBL/GenBank/DDBJ databases.
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; AE001363; AAD18226.1; -; Genomic_DNA.
DR   EMBL; AE002161; AAF38510.1; -; Genomic_DNA.
DR   EMBL; BA000008; BAA98283.1; -; Genomic_DNA.
DR   EMBL; AE009440; AAP98006.1; -; Genomic_DNA.
DR   PIR; A86500; A86500.
DR   PIR; E72123; E72123.
DR   RefSeq; NP_224281.1; NC_000922.1.
DR   RefSeq; WP_010882723.1; NZ_LN847257.1.
DR   AlphaFoldDB; Q9Z9A8; -.
DR   SMR; Q9Z9A8; -.
DR   STRING; 115711.CP_0702; -.
DR   EnsemblBacteria; AAD18226; AAD18226; CPn_0073.
DR   EnsemblBacteria; AAF38510; AAF38510; CP_0702.
DR   GeneID; 45050116; -.
DR   KEGG; cpa:CP_0702; -.
DR   KEGG; cpj:infA; -.
DR   KEGG; cpn:CPn_0073; -.
DR   KEGG; cpt:CpB0073; -.
DR   PATRIC; fig|115713.3.peg.84; -.
DR   eggNOG; COG0361; Bacteria.
DR   HOGENOM; CLU_151267_1_0_0; -.
DR   OMA; AHVSGKM; -.
DR   OrthoDB; 2066663at2; -.
DR   Proteomes; UP000000583; Chromosome.
DR   Proteomes; UP000000801; 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; IPR022967; S1_dom.
DR   InterPro; IPR004368; TIF_IF1.
DR   PANTHER; PTHR33370; PTHR33370; 1.
DR   Pfam; PF01176; eIF-1a; 1.
DR   SMART; SM00316; S1; 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_0000095769"
FT   DOMAIN          1..73
FT                   /note="S1-like"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00075"
SQ   SEQUENCE   73 AA;  8355 MW;  661A19E6C4425F3E CRC64;
     MAKKEDTLVL EGKVEELLPG MHFRVILENG MPVTAHLCGK MRMSNIRLLV GDRVTVEMSA
     YDLTKARVVY RHR