ID   IF3_PROMS               Reviewed;         190 AA.
AC   A2BTL8;
DT   15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT   20-FEB-2007, sequence version 1.
DT   25-MAY-2022, entry version 77.
DE   RecName: Full=Translation initiation factor IF-3 {ECO:0000255|HAMAP-Rule:MF_00080};
GN   Name=infC {ECO:0000255|HAMAP-Rule:MF_00080}; OrderedLocusNames=A9601_18461;
OS   Prochlorococcus marinus (strain AS9601).
OC   Bacteria; Cyanobacteria; Synechococcales; Prochlorococcaceae;
OC   Prochlorococcus.
OX   NCBI_TaxID=146891;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=AS9601;
RX   PubMed=18159947; DOI=10.1371/journal.pgen.0030231;
RA   Kettler G.C., Martiny A.C., Huang K., Zucker J., Coleman M.L., Rodrigue S.,
RA   Chen F., Lapidus A., Ferriera S., Johnson J., Steglich C., Church G.M.,
RA   Richardson P., Chisholm S.W.;
RT   "Patterns and implications of gene gain and loss in the evolution of
RT   Prochlorococcus.";
RL   PLoS Genet. 3:2515-2528(2007).
CC   -!- FUNCTION: IF-3 binds to the 30S ribosomal subunit and shifts the
CC       equilibrum between 70S ribosomes and their 50S and 30S subunits in
CC       favor of the free subunits, thus enhancing the availability of 30S
CC       subunits on which protein synthesis initiation begins.
CC       {ECO:0000255|HAMAP-Rule:MF_00080}.
CC   -!- SUBUNIT: Monomer. {ECO:0000255|HAMAP-Rule:MF_00080}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00080}.
CC   -!- SIMILARITY: Belongs to the IF-3 family. {ECO:0000255|HAMAP-
CC       Rule:MF_00080}.
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DR   EMBL; CP000551; ABM71129.1; -; Genomic_DNA.
DR   RefSeq; WP_011819248.1; NC_008816.1.
DR   AlphaFoldDB; A2BTL8; -.
DR   SMR; A2BTL8; -.
DR   STRING; 146891.A9601_18461; -.
DR   EnsemblBacteria; ABM71129; ABM71129; A9601_18461.
DR   KEGG; pmb:A9601_18461; -.
DR   eggNOG; COG0290; Bacteria.
DR   HOGENOM; CLU_054919_3_2_3; -.
DR   OMA; RNMIMFL; -.
DR   OrthoDB; 1760144at2; -.
DR   Proteomes; UP000002590; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0003743; F:translation initiation factor activity; IEA:UniProtKB-UniRule.
DR   Gene3D; 3.10.20.80; -; 1.
DR   Gene3D; 3.30.110.10; -; 1.
DR   HAMAP; MF_00080; IF_3; 1.
DR   InterPro; IPR036788; T_IF-3_C_sf.
DR   InterPro; IPR036787; T_IF-3_N_sf.
DR   InterPro; IPR019813; Translation_initiation_fac3_CS.
DR   InterPro; IPR001288; Translation_initiation_fac_3.
DR   InterPro; IPR019815; Translation_initiation_fac_3_C.
DR   InterPro; IPR019814; Translation_initiation_fac_3_N.
DR   PANTHER; PTHR10938; PTHR10938; 1.
DR   Pfam; PF00707; IF3_C; 1.
DR   Pfam; PF05198; IF3_N; 1.
DR   SUPFAM; SSF54364; SSF54364; 1.
DR   SUPFAM; SSF55200; SSF55200; 1.
DR   TIGRFAMs; TIGR00168; infC; 1.
DR   PROSITE; PS00938; IF3; 1.
PE   3: Inferred from homology;
KW   Cytoplasm; Initiation factor; Protein biosynthesis.
FT   CHAIN           1..190
FT                   /note="Translation initiation factor IF-3"
FT                   /id="PRO_1000004557"
SQ   SEQUENCE   190 AA;  22229 MW;  3E4F2B810FB41AEB CRC64;
     MPPRPRFDRR APVRELPNIN ERIKYPQLRV VDSDGKQLGV IDRLKALEIA SQRELDLVLV
     SEKANPPVCR IMDYGKYKFE QEKKAKEARK KSHQTEVKEV KMRYKIDKHD YDVRIGQATK
     FLKSGDKVKC TVIFRGREIQ HSNLAETLLL KMANDLEEQS EVQQKPKREG RNMIMFLSPR
     KTPLIKKDDG