ID   YCF4_THAPS              Reviewed;         181 AA.
AC   A0T0U3;
DT   06-FEB-2007, integrated into UniProtKB/Swiss-Prot.
DT   09-JAN-2007, sequence version 1.
DT   03-AUG-2022, entry version 51.
DE   RecName: Full=Photosystem I assembly protein Ycf4 {ECO:0000255|HAMAP-Rule:MF_00437};
GN   Name=ycf4 {ECO:0000255|HAMAP-Rule:MF_00437};
OS   Thalassiosira pseudonana (Marine diatom) (Cyclotella nana).
OG   Plastid; Chloroplast.
OC   Eukaryota; Sar; Stramenopiles; Ochrophyta; Bacillariophyta;
OC   Coscinodiscophyceae; Thalassiosirophycidae; Thalassiosirales;
OC   Thalassiosiraceae; Thalassiosira.
OX   NCBI_TaxID=35128;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=CCMP1335 / NEPCC58 / CCAP 1085/12;
RX   PubMed=17252281; DOI=10.1007/s00438-006-0199-4;
RA   Oudot-Le Secq M.-P., Grimwood J., Shapiro H., Armbrust E.V., Bowler C.,
RA   Green B.R.;
RT   "Chloroplast genomes of the diatoms Phaeodactylum tricornutum and
RT   Thalassiosira pseudonana: comparison with other plastid genomes of the red
RT   lineage.";
RL   Mol. Genet. Genomics 277:427-439(2007).
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; EF067921; ABK20778.1; -; Genomic_DNA.
DR   RefSeq; YP_874555.1; NC_008589.1.
DR   AlphaFoldDB; A0T0U3; -.
DR   STRING; 35128.Thapsdraft1304; -.
DR   GeneID; 4524865; -.
DR   eggNOG; ENOG502QWGG; Eukaryota.
DR   InParanoid; A0T0U3; -.
DR   OMA; RFSNYWW; -.
DR   Proteomes; UP000001449; Chloroplast.
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; Reference proteome;
KW   Thylakoid; Transmembrane; Transmembrane helix.
FT   CHAIN           1..181
FT                   /note="Photosystem I assembly protein Ycf4"
FT                   /id="PRO_0000275681"
FT   TRANSMEM        19..39
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00437"
FT   TRANSMEM        61..81
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00437"
SQ   SEQUENCE   181 AA;  20629 MW;  66F74FC05401A8F1 CRC64;
     MQDQIRQEKI VGSRRFSNYF WASLLLVGGL MFLLAGISSY LKINLLPFAN TTELVFIPQG
     IVMMFYGTLS FGLSIYIMAT LFWDIGSGYN EYNKVENLVK VVRRGFPGKN REILLTYPLN
     NIRSIGIKIS EGLNPQRIIY LCLKDERKIP LTPVQQPDSI SDLEDQAADL AKFLDLKLEN
     L