ID   YCF4_SYNSC              Reviewed;         178 AA.
AC   Q3AI50;
DT   18-MAR-2008, integrated into UniProtKB/Swiss-Prot.
DT   18-MAR-2008, sequence version 2.
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};
GN   OrderedLocusNames=Syncc9605_1991;
OS   Synechococcus sp. (strain CC9605).
OC   Bacteria; Cyanobacteria; Synechococcales; Synechococcaceae; Synechococcus;
OC   unclassified Synechococcus.
OX   NCBI_TaxID=110662;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=CC9605;
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., Schmutz J., Martinez M., Larimer F.,
RA   Land M., Kyrpides N., Ivanova N., Richardson P.;
RT   "Complete sequence of Synechococcus sp. CC9605.";
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}.
CC   -!- SEQUENCE CAUTION:
CC       Sequence=ABB35732.1; Type=Erroneous initiation; Evidence={ECO:0000305};
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DR   EMBL; CP000110; ABB35732.1; ALT_INIT; Genomic_DNA.
DR   RefSeq; WP_025362460.1; NC_007516.1.
DR   AlphaFoldDB; Q3AI50; -.
DR   STRING; 110662.Syncc9605_1991; -.
DR   EnsemblBacteria; ABB35732; ABB35732; Syncc9605_1991.
DR   KEGG; syd:Syncc9605_1991; -.
DR   eggNOG; ENOG502Z7YX; Bacteria.
DR   HOGENOM; CLU_095465_0_0_3; -.
DR   OrthoDB; 1558391at2; -.
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..178
FT                   /note="Photosystem I assembly protein Ycf4"
FT                   /id="PRO_0000325984"
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   178 AA;  19076 MW;  B127F142F6AA1F39 CRC64;
     MSAAVLEQPV LGSRRLSNFL VASAVTIGGV GFLLASLSSY LGRDLVPIGH PAALVFVPQG
     LVMGLYSLAA ALLATYLWYV IAVNVGGGSN RFDKDAGVVT ISRRGFRKPV LVEIPLKDVK
     AVKVEVRDGF NARRRVALRI QGRRDMPLTR VGEPLPLAQL EKDGAELARF LGVNLEGL