ID   YCF4_BIGNA              Reviewed;         178 AA.
AC   Q06J52;
DT   13-NOV-2007, integrated into UniProtKB/Swiss-Prot.
DT   31-OCT-2006, sequence version 1.
DT   25-MAY-2022, entry version 39.
DE   RecName: Full=Photosystem I assembly protein Ycf4;
GN   Name=ycf4;
OS   Bigelowiella natans (Pedinomonas minutissima) (Chlorarachnion sp. (strain
OS   CCMP621)).
OG   Plastid; Chloroplast.
OC   Eukaryota; Sar; Rhizaria; Cercozoa; Chlorarachniophyceae; Bigelowiella.
OX   NCBI_TaxID=227086;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RX   PubMed=16990439; DOI=10.1093/molbev/msl129;
RA   Rogers M.B., Gilson P.R., Su V., McFadden G.I., Keeling P.J.;
RT   "The complete chloroplast genome of the chlorarachniophyte Bigelowiella
RT   natans: evidence for independent origins of chlorarachniophyte and euglenid
RT   secondary endosymbionts.";
RL   Mol. Biol. Evol. 24:54-62(2007).
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   -!- SIMILARITY: Belongs to the Ycf4 family. {ECO:0000305}.
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DR   EMBL; DQ851108; ABG91407.1; -; Genomic_DNA.
DR   RefSeq; YP_778575.1; NC_008408.1.
DR   AlphaFoldDB; Q06J52; -.
DR   GeneID; 4352992; -.
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-KW.
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..178
FT                   /note="Photosystem I assembly protein Ycf4"
FT                   /id="PRO_0000310401"
FT   TRANSMEM        21..41
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        61..81
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
SQ   SEQUENCE   178 AA;  20322 MW;  BFB832FC6E3DCDA5 CRC64;
     MENVFIYRYT VLGSKKISNL IFAIFIFLGS IFFLKASIFS FLDLKTNSLN GNIVFFPQGL
     VMGFYSLLGL LFTFYSLLTF FLKIGFGYNE FNKKENVIRI FRWGFPGKNR RIEACYSIND
     IKSIKISSNT GPKNISISLK GDIDIPFIRE GFSDSFSNIE EQAIDIASFL GIPLVYNQ