IF3_STRS7
ID IF3_STRS7 Reviewed; 176 AA.
AC C0MGM0;
DT 22-SEP-2009, integrated into UniProtKB/Swiss-Prot.
DT 05-MAY-2009, sequence version 1.
DT 25-MAY-2022, entry version 66.
DE RecName: Full=Translation initiation factor IF-3 {ECO:0000255|HAMAP-Rule:MF_00080};
GN Name=infC {ECO:0000255|HAMAP-Rule:MF_00080}; OrderedLocusNames=SZO_11040;
OS Streptococcus equi subsp. zooepidemicus (strain H70).
OC Bacteria; Firmicutes; Bacilli; Lactobacillales; Streptococcaceae;
OC Streptococcus.
OX NCBI_TaxID=553483;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=H70;
RX PubMed=19325880; DOI=10.1371/journal.ppat.1000346;
RA Holden M.T.G., Heather Z., Paillot R., Steward K.F., Webb K., Ainslie F.,
RA Jourdan T., Bason N.C., Holroyd N.E., Mungall K., Quail M.A., Sanders M.,
RA Simmonds M., Willey D., Brooks K., Aanensen D.M., Spratt B.G., Jolley K.A.,
RA Maiden M.C.J., Kehoe M., Chanter N., Bentley S.D., Robinson C.,
RA Maskell D.J., Parkhill J., Waller A.S.;
RT "Genomic evidence for the evolution of Streptococcus equi: host
RT restriction, increased virulence, and genetic exchange with human
RT pathogens.";
RL PLoS Pathog. 5:E1000346-E1000346(2009).
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; FM204884; CAW99501.1; -; Genomic_DNA.
DR AlphaFoldDB; C0MGM0; -.
DR SMR; C0MGM0; -.
DR EnsemblBacteria; CAW99501; CAW99501; SZO_11040.
DR KEGG; seq:SZO_11040; -.
DR eggNOG; COG0290; Bacteria.
DR HOGENOM; CLU_054919_3_2_9; -.
DR OMA; RNMIMFL; -.
DR Proteomes; UP000001368; 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..176
FT /note="Translation initiation factor IF-3"
FT /id="PRO_1000202548"
SQ SEQUENCE 176 AA; 20038 MW; FD249DF5D6853919 CRC64;
MKIIAKKDLF INDEIRVREV RLVGLEGEQL GIKPLSEAQS LADAANVDLV LIQPQAVPPV
AKLMDYGKFK FEYQKKQKEQ RKKQSVVTVK EVRLSPVIDK GDFETKLRNG RKFLEKGNKV
KVSIRFKGRM ITHKEIGAKV LADFAEATQD IAIIEQRAKM DGRQMFMQLA PISDKK