ID   YCF4_PROM9              Reviewed;         185 AA.
AC   Q319Y1;
DT   15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT   06-DEC-2005, sequence version 1.
DT   25-MAY-2022, entry version 77.
DE   RecName: Full=Photosystem I assembly protein Ycf4 {ECO:0000255|HAMAP-Rule:MF_00437};
GN   Name=ycf4 {ECO:0000255|HAMAP-Rule:MF_00437};
GN   OrderedLocusNames=PMT9312_1255;
OS   Prochlorococcus marinus (strain MIT 9312).
OC   Bacteria; Cyanobacteria; Synechococcales; Prochlorococcaceae;
OC   Prochlorococcus.
OX   NCBI_TaxID=74546;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=MIT 9312;
RG   US DOE Joint Genome Institute;
RA   Copeland A., Lucas S., Lapidus A., Barry K., Detter J.C., Glavina T.,
RA   Hammon N., Israni S., Pitluck S., Thiel J., Schmutz J., Larimer F.,
RA   Land M., Kyrpides N., Lykidis A., Richardson P.;
RT   "Complete sequence of Prochlorococcus marinus str. MIT 9312.";
RL   Submitted (JUL-2005) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: Seems to be required for the assembly of the photosystem I
CC       complex. {ECO:0000255|HAMAP-Rule:MF_00437}.
CC   -!- SUBCELLULAR LOCATION: Cellular thylakoid membrane {ECO:0000255|HAMAP-
CC       Rule:MF_00437}; Multi-pass membrane protein {ECO:0000255|HAMAP-
CC       Rule:MF_00437}.
CC   -!- SIMILARITY: Belongs to the Ycf4 family. {ECO:0000255|HAMAP-
CC       Rule:MF_00437}.
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DR   EMBL; CP000111; ABB50314.1; -; Genomic_DNA.
DR   RefSeq; WP_011376802.1; NC_007577.1.
DR   AlphaFoldDB; Q319Y1; -.
DR   STRING; 74546.PMT9312_1255; -.
DR   EnsemblBacteria; ABB50314; ABB50314; PMT9312_1255.
DR   KEGG; pmi:PMT9312_1255; -.
DR   eggNOG; ENOG502Z7YX; Bacteria.
DR   HOGENOM; CLU_095465_0_0_3; -.
DR   OMA; RFSNYWW; -.
DR   OrthoDB; 1558391at2; -.
DR   Proteomes; UP000002715; Chromosome.
DR   GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR   GO; GO:0009522; C:photosystem I; IEA:InterPro.
DR   GO; GO:0031676; C:plasma membrane-derived thylakoid membrane; IEA:UniProtKB-SubCell.
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   Membrane; Photosynthesis; Thylakoid; Transmembrane; Transmembrane helix.
FT   CHAIN           1..185
FT                   /note="Photosystem I assembly protein Ycf4"
FT                   /id="PRO_1000025950"
FT   TRANSMEM        24..44
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00437"
FT   TRANSMEM        66..86
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00437"
SQ   SEQUENCE   185 AA;  20308 MW;  B5F833C149BA076C CRC64;
     MNSDLTSFDK IEQKIGGSRK TSNYIIGGML TIGGIGFLLA SISSYTGKDL LPLGNPSTLL
     FIPQGIIMGA YGVVANLLNF YLWYMVYINF GSGSNSFNKS SKSVEIKRKG LFKDIDVKLN
     FDEIKSVKLD ISEGFNPRRR IALVLKGRKK PLPLSGAGEL KPLLQVEEEG ARLAKFLNVN
     LEGLK