ID   YCF4_PROMM              Reviewed;         191 AA.
AC   Q7V6I1;
DT   16-AUG-2004, integrated into UniProtKB/Swiss-Prot.
DT   01-OCT-2003, sequence version 1.
DT   25-MAY-2022, entry version 90.
DE   RecName: Full=Photosystem I assembly protein Ycf4;
GN   Name=ycf4; OrderedLocusNames=PMT_1178;
OS   Prochlorococcus marinus (strain MIT 9313).
OC   Bacteria; Cyanobacteria; Synechococcales; Prochlorococcaceae;
OC   Prochlorococcus.
OX   NCBI_TaxID=74547;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=MIT 9313;
RX   PubMed=12917642; DOI=10.1038/nature01947;
RA   Rocap G., Larimer F.W., Lamerdin J.E., Malfatti S., Chain P., Ahlgren N.A.,
RA   Arellano A., Coleman M., Hauser L., Hess W.R., Johnson Z.I., Land M.L.,
RA   Lindell D., Post A.F., Regala W., Shah M., Shaw S.L., Steglich C.,
RA   Sullivan M.B., Ting C.S., Tolonen A., Webb E.A., Zinser E.R.,
RA   Chisholm S.W.;
RT   "Genome divergence in two Prochlorococcus ecotypes reflects oceanic niche
RT   differentiation.";
RL   Nature 424:1042-1047(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; BX548175; CAE21353.1; -; Genomic_DNA.
DR   RefSeq; WP_011130549.1; NC_005071.1.
DR   AlphaFoldDB; Q7V6I1; -.
DR   STRING; 74547.PMT_1178; -.
DR   EnsemblBacteria; CAE21353; CAE21353; PMT_1178.
DR   KEGG; pmt:PMT_1178; -.
DR   eggNOG; ENOG502Z7YX; Bacteria.
DR   HOGENOM; CLU_095465_0_0_3; -.
DR   OMA; RFSNYWW; -.
DR   OrthoDB; 1558391at2; -.
DR   Proteomes; UP000001423; 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..191
FT                   /note="Photosystem I assembly protein Ycf4"
FT                   /id="PRO_0000217635"
FT   TRANSMEM        33..55
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        70..92
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
SQ   SEQUENCE   191 AA;  20762 MW;  EBE1395D243D5090 CRC64;
     MSADLQETPK AGDASLERLE QSVLGFRRLS NQLLAVIVTI GGLGFTLTCL SSYLGRDLLP
     IGSPSTLLFV PQGLVMGLYG IAGLLLASYL WAMININLGA GSNNFDKASG MVKICRRGYF
     KLISAEFPLK DVKAVKVEVR DGFNPLRRLS LRVQGRRDIT LTRVGQPLPL AQLEQDGAEL
     ARFLDVNLEG L