ID   YCF4_EUGGR              Reviewed;         198 AA.
AC   P09362;
DT   01-JUL-1989, integrated into UniProtKB/Swiss-Prot.
DT   18-MAR-2008, sequence version 2.
DT   25-MAY-2022, entry version 81.
DE   RecName: Full=Photosystem I assembly protein Ycf4 {ECO:0000255|HAMAP-Rule:MF_00437};
GN   Name=ycf4 {ECO:0000255|HAMAP-Rule:MF_00437};
OS   Euglena gracilis.
OG   Plastid; Chloroplast.
OC   Eukaryota; Discoba; Euglenozoa; Euglenida; Spirocuta; Euglenophyceae;
OC   Euglenales; Euglenaceae; Euglena.
OX   NCBI_TaxID=3039;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC   STRAIN=Z / UTEX 753;
RX   PubMed=3118328; DOI=10.1093/nar/15.19.7809;
RA   Montandon P.-E., Knuchel-Aegerter C., Stutz E.;
RT   "Euglena gracilis chloroplast DNA: the untranslated leader of tufA-ORF206
RT   gene contains an intron.";
RL   Nucleic Acids Res. 15:7809-7822(1987).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=Z / UTEX 753;
RX   PubMed=8346031; DOI=10.1093/nar/21.15.3537;
RA   Hallick R.B., Hong L., Drager R.G., Favreau M.R., Monfort A., Orsat B.,
RA   Spielmann A., Stutz E.;
RT   "Complete sequence of Euglena gracilis chloroplast DNA.";
RL   Nucleic Acids Res. 21:3537-3544(1993).
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}.
CC   -!- SEQUENCE CAUTION:
CC       Sequence=CAA29600.1; Type=Erroneous initiation; Evidence={ECO:0000305};
CC       Sequence=CAA50086.1; Type=Erroneous initiation; Evidence={ECO:0000305};
CC       Sequence=CAA77903.1; Type=Erroneous initiation; Evidence={ECO:0000305};
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DR   EMBL; Z11874; CAA77903.1; ALT_INIT; Genomic_DNA.
DR   EMBL; X06254; CAA29600.1; ALT_INIT; Genomic_DNA.
DR   EMBL; X70810; CAA50086.1; ALT_INIT; Genomic_DNA.
DR   PIR; S01049; S01049.
DR   RefSeq; NP_041899.1; NC_001603.2.
DR   AlphaFoldDB; P09362; -.
DR   GeneID; 807492; -.
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..198
FT                   /note="Photosystem I assembly protein Ycf4"
FT                   /id="PRO_0000217605"
FT   TRANSMEM        35..57
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00437"
FT   TRANSMEM        70..92
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00437"
SQ   SEQUENCE   198 AA;  22656 MW;  853FECF85BDC5FD1 CRC64;
     MTLSKNENIK AKQKQINLPK ILRQEIKENN KIIKWFYNIV MLLGGIGFLI VGISSYIGNN
     LIYFLDASEI IFFPQGITMC FYGTCGILFS INQISIILNG VGEGYNEFNK ELNLMTIYRK
     GKQGKNSDIN ITYSLKDIEG IRIEIKNEYF NVKQNVFLRI KDKNDLPIIQ LSNPIKISDL
     EKQASEIASF LNVPIKGY