ID C4K3S4_HAMD5 Unreviewed; 72 AA.
AC C4K3S4;
DT 07-JUL-2009, integrated into UniProtKB/TrEMBL.
DT 07-JUL-2009, sequence version 1.
DT 27-MAR-2024, entry version 87.
DE RecName: Full=Translation initiation factor IF-1 {ECO:0000256|HAMAP-Rule:MF_00075};
GN Name=infA {ECO:0000256|HAMAP-Rule:MF_00075,
GN ECO:0000313|EMBL:ACQ67217.1};
GN OrderedLocusNames=HDEF_0463 {ECO:0000313|EMBL:ACQ67217.1};
OS Hamiltonella defensa subsp. Acyrthosiphon pisum (strain 5AT).
OC Bacteria; Pseudomonadota; Gammaproteobacteria; Enterobacterales;
OC Enterobacteriaceae; aphid secondary symbionts; Hamiltonella.
OX NCBI_TaxID=572265 {ECO:0000313|EMBL:ACQ67217.1, ECO:0000313|Proteomes:UP000002334};
RN [1] {ECO:0000313|EMBL:ACQ67217.1, ECO:0000313|Proteomes:UP000002334}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=5AT {ECO:0000313|Proteomes:UP000002334};
RX PubMed=19451630; DOI=10.1073/pnas.0900194106;
RA Degnan P.H., Yu Y., Sisneros N., Wing R.A., Moran N.A.;
RT "Hamiltonella defensa, genome evolution of protective bacterial
RT endosymbiont from pathogenic ancestors.";
RL Proc. Natl. Acad. Sci. U.S.A. 106:9063-9068(2009).
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:0000256|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:0000256|HAMAP-Rule:MF_00075}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000256|HAMAP-Rule:MF_00075}.
CC -!- SIMILARITY: Belongs to the IF-1 family. {ECO:0000256|ARBA:ARBA00010939,
CC ECO:0000256|HAMAP-Rule:MF_00075}.
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DR EMBL; CP001277; ACQ67217.1; -; Genomic_DNA.
DR RefSeq; WP_012738174.1; NC_012751.1.
DR AlphaFoldDB; C4K3S4; -.
DR STRING; 572265.HDEF_0463; -.
DR GeneID; 66260358; -.
DR KEGG; hde:HDEF_0463; -.
DR eggNOG; COG0361; Bacteria.
DR HOGENOM; CLU_151267_1_0_6; -.
DR Proteomes; UP000002334; 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 {ECO:0000256|HAMAP-Rule:MF_00075};
KW Initiation factor {ECO:0000256|ARBA:ARBA00022540, ECO:0000256|HAMAP-
KW Rule:MF_00075};
KW Protein biosynthesis {ECO:0000256|ARBA:ARBA00022917, ECO:0000256|HAMAP-
KW Rule:MF_00075}; RNA-binding {ECO:0000256|HAMAP-Rule:MF_00075};
KW rRNA-binding {ECO:0000256|HAMAP-Rule:MF_00075}.
FT DOMAIN 1..72
FT /note="S1-like"
FT /evidence="ECO:0000259|PROSITE:PS50832"
SQ SEQUENCE 72 AA; 8287 MW; C3E2B4C94F04FF58 CRC64;
MAKEDNIEMQ GTVRDALPNA MFRVELENGH HVTAHISGKM RKNYIRILTG DKVTLELTPY
DLSKARITFR SR
//
