ID   IF1C_TOBAC              Reviewed;          96 AA.
AC   P12136;
DT   01-OCT-1989, integrated into UniProtKB/Swiss-Prot.
DT   01-OCT-1989, sequence version 1.
DT   25-MAY-2022, entry version 93.
DE   RecName: Full=Putative translation initiation factor IF-1, chloroplastic;
GN   Name=infA;
OS   Nicotiana tabacum (Common tobacco).
OG   Plastid; Chloroplast.
OC   Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC   Spermatophyta; Magnoliopsida; eudicotyledons; Gunneridae; Pentapetalae;
OC   asterids; lamiids; Solanales; Solanaceae; Nicotianoideae; Nicotianeae;
OC   Nicotiana.
OX   NCBI_TaxID=4097;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=cv. Bright Yellow 4;
RX   PubMed=16453699; DOI=10.1002/j.1460-2075.1986.tb04464.x;
RA   Shinozaki K., Ohme M., Tanaka M., Wakasugi T., Hayashida N.,
RA   Matsubayashi T., Zaita N., Chunwongse J., Obokata J.,
RA   Yamaguchi-Shinozaki K., Ohto C., Torazawa K., Meng B.-Y., Sugita M.,
RA   Deno H., Kamogashira T., Yamada K., Kusuda J., Takaiwa F., Kato A.,
RA   Tohdoh N., Shimada H., Sugiura M.;
RT   "The complete nucleotide sequence of the tobacco chloroplast genome: its
RT   gene organization and expression.";
RL   EMBO J. 5:2043-2049(1986).
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:0000305}.
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:0000305}.
CC   -!- SUBCELLULAR LOCATION: Plastid, chloroplast {ECO:0000305}.
CC   -!- SIMILARITY: Belongs to the IF-1 family. {ECO:0000305}.
CC   -!- CAUTION: Could be the product of a pseudogene. {ECO:0000305}.
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DR   EMBL; Z00044; -; NOT_ANNOTATED_CDS; Genomic_DNA.
DR   PIR; A05035; A05035.
DR   AlphaFoldDB; P12136; -.
DR   SMR; P12136; -.
DR   GO; GO:0009507; C:chloroplast; IEA:UniProtKB-SubCell.
DR   GO; GO:0019843; F:rRNA binding; IEA:UniProtKB-KW.
DR   GO; GO:0003743; F:translation initiation factor activity; IEA:UniProtKB-KW.
DR   Gene3D; 2.40.50.140; -; 1.
DR   InterPro; IPR012340; NA-bd_OB-fold.
DR   InterPro; IPR006196; RNA-binding_domain_S1_IF1.
DR   InterPro; IPR004368; TIF_IF1.
DR   PANTHER; PTHR33370; PTHR33370; 1.
DR   Pfam; PF01176; eIF-1a; 1.
DR   SUPFAM; SSF50249; SSF50249; 1.
DR   TIGRFAMs; TIGR00008; infA; 1.
DR   PROSITE; PS50832; S1_IF1_TYPE; 1.
PE   5: Uncertain;
KW   Chloroplast; Initiation factor; Plastid; Protein biosynthesis; RNA-binding;
KW   rRNA-binding.
FT   CHAIN           1..96
FT                   /note="Putative translation initiation factor IF-1,
FT                   chloroplastic"
FT                   /id="PRO_0000095954"
FT   DOMAIN          18..57
FT                   /note="S1-like"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00181"
SQ   SEQUENCE   96 AA;  11407 MW;  B0BA21A2212EDF6D CRC64;
     LLNRLPNGLF RVCLDLIINY VSGKIRHSFI RILPGDRVKI EVSPYDSTKG RIIYRLHNKD
     LKDSFFNFTI PFVGIQFEMK NFKKLIFFQE IDSELR