ID   YCF4_PROMA              Reviewed;         193 AA.
AC   Q7VB45;
DT   16-AUG-2004, integrated into UniProtKB/Swiss-Prot.
DT   01-OCT-2003, sequence version 1.
DT   25-MAY-2022, entry version 88.
DE   RecName: Full=Photosystem I assembly protein Ycf4;
GN   Name=ycf4; OrderedLocusNames=Pro_1253;
OS   Prochlorococcus marinus (strain SARG / CCMP1375 / SS120).
OC   Bacteria; Cyanobacteria; Synechococcales; Prochlorococcaceae;
OC   Prochlorococcus.
OX   NCBI_TaxID=167539;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=SARG / CCMP1375 / SS120;
RX   PubMed=12917486; DOI=10.1073/pnas.1733211100;
RA   Dufresne A., Salanoubat M., Partensky F., Artiguenave F., Axmann I.M.,
RA   Barbe V., Duprat S., Galperin M.Y., Koonin E.V., Le Gall F., Makarova K.S.,
RA   Ostrowski M., Oztas S., Robert C., Rogozin I.B., Scanlan D.J.,
RA   Tandeau de Marsac N., Weissenbach J., Wincker P., Wolf Y.I., Hess W.R.;
RT   "Genome sequence of the cyanobacterium Prochlorococcus marinus SS120, a
RT   nearly minimal oxyphototrophic genome.";
RL   Proc. Natl. Acad. Sci. U.S.A. 100:10020-10025(2003).
CC   -!- FUNCTION: Seems to be required for the assembly of the photosystem I
CC       complex. {ECO:0000250}.
CC   -!- SUBCELLULAR LOCATION: Cellular thylakoid membrane {ECO:0000250}; Multi-
CC       pass membrane protein {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the Ycf4 family. {ECO:0000305}.
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DR   EMBL; AE017126; AAQ00298.1; -; Genomic_DNA.
DR   RefSeq; NP_875645.1; NC_005042.1.
DR   RefSeq; WP_011125405.1; NC_005042.1.
DR   AlphaFoldDB; Q7VB45; -.
DR   STRING; 167539.Pro_1253; -.
DR   EnsemblBacteria; AAQ00298; AAQ00298; Pro_1253.
DR   GeneID; 54200588; -.
DR   KEGG; pma:Pro_1253; -.
DR   PATRIC; fig|167539.5.peg.1315; -.
DR   eggNOG; ENOG502Z7YX; Bacteria.
DR   HOGENOM; CLU_095465_0_0_3; -.
DR   OMA; RFSNYWW; -.
DR   OrthoDB; 1558391at2; -.
DR   Proteomes; UP000001420; 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; Reference proteome; Thylakoid; Transmembrane;
KW   Transmembrane helix.
FT   CHAIN           1..193
FT                   /note="Photosystem I assembly protein Ycf4"
FT                   /id="PRO_0000217634"
FT   TRANSMEM        32..54
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        69..91
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
SQ   SEQUENCE   193 AA;  21052 MW;  FFDD3BEE2FD3FBF7 CRC64;
     MSADFKEASS PTDSSETLLE QIVKGSRKTS NYIVASMLAV GGIGFSLASL SSYFGIDLLP
     LGNPSTLIFV PQGLFMGFYG IAATFISVYL WALIKVDYGS GLNRFDKNKG VLSVSRKGLL
     KEILVEIPID DIQAVKLEVR EGFNPRRRIT LRLQGRRDLP ISEVGGPQPL LSLEQEGAEI
     ARFLKVNLEG LSN