ID   YCF4_TRICV              Reviewed;         181 AA.
AC   P49526;
DT   01-FEB-1996, integrated into UniProtKB/Swiss-Prot.
DT   01-FEB-1996, sequence version 1.
DT   25-MAY-2022, entry version 72.
DE   RecName: Full=Photosystem I assembly protein Ycf4 {ECO:0000255|HAMAP-Rule:MF_00437};
GN   Name=ycf4 {ECO:0000255|HAMAP-Rule:MF_00437};
OS   Trieres chinensis (Marine centric diatom) (Odontella sinensis).
OG   Plastid; Chloroplast.
OC   Eukaryota; Sar; Stramenopiles; Ochrophyta; Bacillariophyta; Mediophyceae;
OC   Biddulphiophycidae; Eupodiscales; Parodontellaceae; Trieres.
OX   NCBI_TaxID=1514140;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RA   Kowallik K.V., Stoebe B., Schaffran I., Kroth-Pancic P., Freier U.;
RT   "The chloroplast genome of a chlorophyll a+c-containing alga, Odontella
RT   sinensis.";
RL   Plant Mol. Biol. Rep. 13:336-342(1995).
CC   -!- FUNCTION: Seems to be required for the assembly of the photosystem I
CC       complex. {ECO:0000255|HAMAP-Rule:MF_00437}.
CC   -!- SUBCELLULAR LOCATION: Plastid, chloroplast thylakoid membrane
CC       {ECO:0000255|HAMAP-Rule:MF_00437}; Multi-pass membrane protein
CC       {ECO:0000255|HAMAP-Rule:MF_00437}.
CC   -!- SIMILARITY: Belongs to the Ycf4 family. {ECO:0000255|HAMAP-
CC       Rule:MF_00437}.
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DR   EMBL; Z67753; CAA91709.1; -; Genomic_DNA.
DR   PIR; S78336; S78336.
DR   AlphaFoldDB; P49526; -.
DR   SMR; P49526; -.
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   3: Inferred from homology;
KW   Chloroplast; Membrane; Photosynthesis; Plastid; Thylakoid; Transmembrane;
KW   Transmembrane helix.
FT   CHAIN           1..181
FT                   /note="Photosystem I assembly protein Ycf4"
FT                   /id="PRO_0000217616"
FT   TRANSMEM        19..41
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00437"
FT   TRANSMEM        61..83
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00437"
SQ   SEQUENCE   181 AA;  20547 MW;  663832A7DB554EFA CRC64;
     MQKEIRRDDI IGSRRFSNYF WAVFLCSGGI SFLLAGISSY FKINFLPFAN PKELAFIPQG
     LVMSFYGTLS IALAIYILGT LFWDIGSGYN EYNKVENLVK IVRKGFPGKN REILLTYPLT
     NIRAIGIKIS EGLNPKRSIY LCLKDERQIP LTPVQQPNSI SNLEEEAAEL AKFLDLKLEN
     L