IF3_HAEIN
ID IF3_HAEIN Reviewed; 172 AA.
AC P43814;
DT 01-NOV-1995, integrated into UniProtKB/Swiss-Prot.
DT 01-NOV-1995, sequence version 1.
DT 25-MAY-2022, entry version 115.
DE RecName: Full=Translation initiation factor IF-3 {ECO:0000255|HAMAP-Rule:MF_00080};
GN Name=infC {ECO:0000255|HAMAP-Rule:MF_00080}; OrderedLocusNames=HI_1318;
OS Haemophilus influenzae (strain ATCC 51907 / DSM 11121 / KW20 / Rd).
OC Bacteria; Proteobacteria; Gammaproteobacteria; Pasteurellales;
OC Pasteurellaceae; Haemophilus.
OX NCBI_TaxID=71421;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 51907 / DSM 11121 / KW20 / Rd;
RX PubMed=7542800; DOI=10.1126/science.7542800;
RA Fleischmann R.D., Adams M.D., White O., Clayton R.A., Kirkness E.F.,
RA Kerlavage A.R., Bult C.J., Tomb J.-F., Dougherty B.A., Merrick J.M.,
RA McKenney K., Sutton G.G., FitzHugh W., Fields C.A., Gocayne J.D.,
RA Scott J.D., Shirley R., Liu L.-I., Glodek A., Kelley J.M., Weidman J.F.,
RA Phillips C.A., Spriggs T., Hedblom E., Cotton M.D., Utterback T.R.,
RA Hanna M.C., Nguyen D.T., Saudek D.M., Brandon R.C., Fine L.D.,
RA Fritchman J.L., Fuhrmann J.L., Geoghagen N.S.M., Gnehm C.L., McDonald L.A.,
RA Small K.V., Fraser C.M., Smith H.O., Venter J.C.;
RT "Whole-genome random sequencing and assembly of Haemophilus influenzae
RT Rd.";
RL Science 269:496-512(1995).
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}.
CC -!- SEQUENCE CAUTION:
CC Sequence=AAC22963.1; Type=Erroneous initiation; Evidence={ECO:0000305};
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DR EMBL; L42023; AAC22963.1; ALT_INIT; Genomic_DNA.
DR PIR; B64116; B64116.
DR RefSeq; NP_439469.1; NC_000907.1.
DR AlphaFoldDB; P43814; -.
DR SMR; P43814; -.
DR STRING; 71421.HI_1318; -.
DR EnsemblBacteria; AAC22963; AAC22963; HI_1318.
DR KEGG; hin:HI_1318; -.
DR PATRIC; fig|71421.8.peg.1370; -.
DR eggNOG; COG0290; Bacteria.
DR HOGENOM; CLU_054919_3_2_6; -.
DR PhylomeDB; P43814; -.
DR Proteomes; UP000000579; Chromosome.
DR GO; GO:0005829; C:cytosol; IBA:GO_Central.
DR GO; GO:0043022; F:ribosome binding; IBA:GO_Central.
DR GO; GO:0003743; F:translation initiation factor activity; IBA:GO_Central.
DR GO; GO:0032790; P:ribosome disassembly; IBA:GO_Central.
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; Reference proteome.
FT CHAIN 1..172
FT /note="Translation initiation factor IF-3"
FT /id="PRO_0000177523"
FT SITE 100
FT /note="Important for 30S binding"
FT /evidence="ECO:0000250"
FT SITE 103
FT /note="Important for 30S binding"
FT /evidence="ECO:0000250"
SQ SEQUENCE 172 AA; 19631 MW; BC97FB87D1D77001 CRC64;
MNRPNRINEE IRVKEVRLID QNGEQAGIVS IQQALEMMAE QAELDLVEIS PNAEPPVCRI
MNYGKFLYEK SKTAKEQKKK QKVVQVKEIK FRPGTDEGDY QVKLRSLIRF LEDGDKAKIT
VRFRGREMAH QDIGLDVLER VKNDLAEISV VESAPGKLEG RQAVMVLAPK KK