ID IF1_LACAC Reviewed; 73 AA.
AC Q5FM69;
DT 30-AUG-2005, integrated into UniProtKB/Swiss-Prot.
DT 01-MAR-2005, sequence version 1.
DT 27-MAR-2024, entry version 92.
DE RecName: Full=Translation initiation factor IF-1 {ECO:0000255|HAMAP-Rule:MF_00075};
GN Name=infA {ECO:0000255|HAMAP-Rule:MF_00075}; OrderedLocusNames=LBA0313;
OS Lactobacillus acidophilus (strain ATCC 700396 / NCK56 / N2 / NCFM).
OC Bacteria; Bacillota; Bacilli; Lactobacillales; Lactobacillaceae;
OC Lactobacillus.
OX NCBI_TaxID=272621;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 700396 / NCK56 / N2 / NCFM;
RX PubMed=15671160; DOI=10.1073/pnas.0409188102;
RA Altermann E., Russell W.M., Azcarate-Peril M.A., Barrangou R., Buck B.L.,
RA McAuliffe O., Souther N., Dobson A., Duong T., Callanan M., Lick S.,
RA Hamrick A., Cano R., Klaenhammer T.R.;
RT "Complete genome sequence of the probiotic lactic acid bacterium
RT Lactobacillus acidophilus NCFM.";
RL Proc. Natl. Acad. Sci. U.S.A. 102:3906-3912(2005).
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; CP000033; AAV42205.1; -; Genomic_DNA.
DR RefSeq; WP_002878178.1; NC_006814.3.
DR RefSeq; YP_193236.1; NC_006814.3.
DR AlphaFoldDB; Q5FM69; -.
DR SMR; Q5FM69; -.
DR STRING; 272621.LBA0313; -.
DR GeneID; 83725525; -.
DR KEGG; lac:LBA0313; -.
DR PATRIC; fig|272621.13.peg.299; -.
DR eggNOG; COG0361; Bacteria.
DR HOGENOM; CLU_151267_1_0_9; -.
DR OrthoDB; 9803250at2; -.
DR BioCyc; LACI272621:G1G49-307-MONOMER; -.
DR PRO; PR:Q5FM69; -.
DR Proteomes; UP000006381; 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; Nucleic acid-binding proteins; 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; IPR003029; S1_domain.
DR InterPro; IPR004368; TIF_IF1.
DR NCBIfam; TIGR00008; infA; 1.
DR PANTHER; PTHR33370; TRANSLATION INITIATION FACTOR IF-1, CHLOROPLASTIC; 1.
DR PANTHER; PTHR33370:SF1; TRANSLATION INITIATION FACTOR IF-1, CHLOROPLASTIC; 1.
DR Pfam; PF01176; eIF-1a; 1.
DR SMART; SM00316; S1; 1.
DR SUPFAM; SSF50249; Nucleic acid-binding proteins; 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..73
FT /note="Translation initiation factor IF-1"
FT /id="PRO_0000095802"
FT DOMAIN 1..72
FT /note="S1-like"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00075"
SQ SEQUENCE 73 AA; 8274 MW; A1A02563EB0CFC62 CRC64;
MAKDDVIEVE GKVVDTLPNA MFKVELENGA TILAHVSGKI RMHYIRILPG DRVTVELSPY
DLTKGRITYR FIK
//
