ID   IF1C_ANTAG              Reviewed;          78 AA.
AC   Q85C77;
DT   02-FEB-2004, integrated into UniProtKB/Swiss-Prot.
DT   01-JUN-2003, sequence version 1.
DT   25-MAY-2022, entry version 69.
DE   RecName: Full=Translation initiation factor IF-1, chloroplastic {ECO:0000255|HAMAP-Rule:MF_00075};
GN   Name=infA {ECO:0000255|HAMAP-Rule:MF_00075};
OS   Anthoceros angustus (Hornwort) (Anthoceros formosae).
OG   Plastid; Chloroplast.
OC   Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Anthocerotophyta;
OC   Anthocerotopsida; Anthocerotidae; Anthocerotales; Anthocerotaceae;
OC   Anthoceros.
OX   NCBI_TaxID=48387;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA], AND RNA EDITING.
RX   PubMed=12527781; DOI=10.1093/nar/gkg155;
RA   Kugita M., Kaneko A., Yamamoto Y., Takeya Y., Matsumoto T., Yoshinaga K.;
RT   "The complete nucleotide sequence of the hornwort (Anthoceros formosae)
RT   chloroplast genome: insight into the earliest land plants.";
RL   Nucleic Acids Res. 31:716-721(2003).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [MRNA], AND RNA EDITING.
RC   TISSUE=Thallus;
RX   PubMed=12711687; DOI=10.1093/nar/gkg327;
RA   Kugita M., Yamamoto Y., Fujikawa T., Matsumoto T., Yoshinaga K.;
RT   "RNA editing in hornwort chloroplasts makes more than half the genes
RT   functional.";
RL   Nucleic Acids Res. 31:2417-2423(2003).
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: Plastid, chloroplast {ECO:0000255|HAMAP-
CC       Rule:MF_00075}.
CC   -!- RNA EDITING: Modified_positions=13 {ECO:0000269|PubMed:12527781,
CC       ECO:0000269|PubMed:12711687}, 46 {ECO:0000269|PubMed:12527781,
CC       ECO:0000269|PubMed:12711687}, 66 {ECO:0000269|PubMed:12527781,
CC       ECO:0000269|PubMed:12711687}; Note=The nonsense codon at position 46 is
CC       modified to a sense codon.;
CC   -!- SIMILARITY: Belongs to the IF-1 family. {ECO:0000255|HAMAP-
CC       Rule:MF_00075}.
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DR   EMBL; AB086179; BAC55384.1; -; Genomic_DNA.
DR   EMBL; AB087468; BAC55481.1; -; mRNA.
DR   RefSeq; NP_777448.1; NC_004543.1.
DR   AlphaFoldDB; Q85C77; -.
DR   SMR; Q85C77; -.
DR   GeneID; 2553492; -.
DR   GO; GO:0009507; C:chloroplast; 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; -; 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; IPR022967; S1_dom.
DR   InterPro; IPR004368; TIF_IF1.
DR   PANTHER; PTHR33370; PTHR33370; 1.
DR   Pfam; PF01176; eIF-1a; 1.
DR   SMART; SM00316; S1; 1.
DR   SUPFAM; SSF50249; SSF50249; 1.
DR   TIGRFAMs; TIGR00008; infA; 1.
DR   PROSITE; PS50832; S1_IF1_TYPE; 1.
PE   2: Evidence at transcript level;
KW   Chloroplast; Initiation factor; Plastid; Protein biosynthesis; RNA editing;
KW   RNA-binding; rRNA-binding.
FT   CHAIN           1..78
FT                   /note="Translation initiation factor IF-1, chloroplastic"
FT                   /id="PRO_0000095917"
FT   DOMAIN          1..72
FT                   /note="S1-like"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00075"
SQ   SEQUENCE   78 AA;  8950 MW;  336345831714587D CRC64;
     MEKQNLIDME GVVTESLPNA MFRVCLDNGC QVLTHISGKI RRNYIRILPG DRVKVELSPY
     DLTKGRITYR LRTKSSNP