ID   YCF4_ANTAG              Reviewed;         184 AA.
AC   Q85BP9;
DT   02-FEB-2004, integrated into UniProtKB/Swiss-Prot.
DT   01-JUN-2003, sequence version 1.
DT   25-MAY-2022, entry version 53.
DE   RecName: Full=Photosystem I assembly protein Ycf4;
GN   Name=ycf4;
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: Seems to be required for the assembly of the photosystem I
CC       complex. {ECO:0000250}.
CC   -!- SUBCELLULAR LOCATION: Plastid, chloroplast thylakoid membrane
CC       {ECO:0000250}; Multi-pass membrane protein {ECO:0000250}.
CC   -!- RNA EDITING: Modified_positions=18 {ECO:0000269|PubMed:12527781,
CC       ECO:0000269|PubMed:12711687}, 33 {ECO:0000269|PubMed:12527781,
CC       ECO:0000269|PubMed:12711687}, 36 {ECO:0000269|PubMed:12527781,
CC       ECO:0000269|PubMed:12711687}, 37 {ECO:0000269|PubMed:12527781,
CC       ECO:0000269|PubMed:12711687}, 56 {ECO:0000269|PubMed:12527781,
CC       ECO:0000269|PubMed:12711687}, 62 {ECO:0000269|PubMed:12527781,
CC       ECO:0000269|PubMed:12711687}, 110 {ECO:0000269|PubMed:12527781,
CC       ECO:0000269|PubMed:12711687}, 120 {ECO:0000269|PubMed:12527781,
CC       ECO:0000269|PubMed:12711687}; Note=The nonsense codons at positions 18,
CC       56 and 62 are modified to sense codons.;
CC   -!- SIMILARITY: Belongs to the Ycf4 family. {ECO:0000305}.
CC   ---------------------------------------------------------------------------
CC   Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms
CC   Distributed under the Creative Commons Attribution (CC BY 4.0) License
CC   ---------------------------------------------------------------------------
DR   EMBL; AB086179; BAC55360.1; -; Genomic_DNA.
DR   EMBL; AB087452; BAC55456.1; -; mRNA.
DR   RefSeq; NP_777424.1; NC_004543.1.
DR   AlphaFoldDB; Q85BP9; -.
DR   SMR; Q85BP9; -.
DR   GeneID; 2553521; -.
DR   GO; GO:0009535; C:chloroplast thylakoid membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR   GO; GO:0009522; C:photosystem I; IEA:InterPro.
DR   GO; GO:0015979; P:photosynthesis; IEA:UniProtKB-UniRule.
DR   HAMAP; MF_00437; Ycf4; 1.
DR   InterPro; IPR003359; PSI_Ycf4_assembly.
DR   Pfam; PF02392; Ycf4; 1.
PE   2: Evidence at transcript level;
KW   Chloroplast; Membrane; Photosynthesis; Plastid; RNA editing; Thylakoid;
KW   Transmembrane; Transmembrane helix.
FT   CHAIN           1..184
FT                   /note="Photosystem I assembly protein Ycf4"
FT                   /id="PRO_0000217595"
FT   TRANSMEM        21..43
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        58..80
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
SQ   SEQUENCE   184 AA;  21310 MW;  61E51DA63AF563DC CRC64;
     MNWESEWFRI ELIRGSRRIS NFFWAFILLS GALGFLSVGL SSYFGKDLIS FLSYEQIVFI
     PQGIVMCFYG IAGSAFSLYL WGTIFWNIGS GYNKFDKGKG IVCIYRWGFP GKNRRIRIEF
     SMKDIEAIGM EVQEGFYPRR TLRLKIKGQQ DVPLTYIGEN LTLREIEEEA AELARFLQIS
     IEGF