ID   YCF4_SYNJB              Reviewed;         189 AA.
AC   Q2JHG9;
DT   18-MAR-2008, integrated into UniProtKB/Swiss-Prot.
DT   07-MAR-2006, sequence version 1.
DT   25-MAY-2022, entry version 76.
DE   RecName: Full=Photosystem I assembly protein Ycf4 {ECO:0000255|HAMAP-Rule:MF_00437};
GN   Name=ycf4 {ECO:0000255|HAMAP-Rule:MF_00437}; OrderedLocusNames=CYB_1463;
OS   Synechococcus sp. (strain JA-2-3B'a(2-13)) (Cyanobacteria bacterium
OS   Yellowstone B-Prime).
OC   Bacteria; Cyanobacteria; Synechococcales; Synechococcaceae; Synechococcus;
OC   unclassified Synechococcus.
OX   NCBI_TaxID=321332;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=JA-2-3B'a(2-13);
RX   PubMed=18059494; DOI=10.1038/ismej.2007.46;
RA   Bhaya D., Grossman A.R., Steunou A.-S., Khuri N., Cohan F.M., Hamamura N.,
RA   Melendrez M.C., Bateson M.M., Ward D.M., Heidelberg J.F.;
RT   "Population level functional diversity in a microbial community revealed by
RT   comparative genomic and metagenomic analyses.";
RL   ISME J. 1:703-713(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: 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; CP000240; ABD02430.1; -; Genomic_DNA.
DR   RefSeq; WP_011433078.1; NC_007776.1.
DR   AlphaFoldDB; Q2JHG9; -.
DR   STRING; 321332.CYB_1463; -.
DR   KEGG; cyb:CYB_1463; -.
DR   eggNOG; ENOG502Z7YX; Bacteria.
DR   HOGENOM; CLU_095465_0_0_3; -.
DR   OMA; RFSNYWW; -.
DR   OrthoDB; 1558391at2; -.
DR   Proteomes; UP000001938; 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..189
FT                   /note="Photosystem I assembly protein Ycf4"
FT                   /id="PRO_0000325986"
FT   TRANSMEM        25..45
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00437"
FT   TRANSMEM        62..82
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00437"
SQ   SEQUENCE   189 AA;  21018 MW;  A7CB4E44D251710B CRC64;
     MSAIVPEIRS ADLLRYTVIG SRRPSVYFWA VALTGGGLGF TLAGLSSYLH RNLLPFSDPA
     SLVFIPQGIA MLFYGVLGSL AGLYQWLSLY WNLGGGYNEF DRRTQKITLV RQGFPGKNRE
     VRLEYDFADV QSLRVELREG LNPRRAIYLR VKGRGDIPLT GVGQPPPLTE IENQAAEIAR
     FLNVSLEGI