ID   YCF4_HORVU              Reviewed;         185 AA.
AC   P20454; A1E9K1;
DT   01-FEB-1991, integrated into UniProtKB/Swiss-Prot.
DT   20-FEB-2007, sequence version 2.
DT   25-MAY-2022, entry version 82.
DE   RecName: Full=Photosystem I assembly protein Ycf4;
GN   Name=ycf4;
OS   Hordeum vulgare (Barley).
OG   Plastid; Chloroplast.
OC   Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC   Spermatophyta; Magnoliopsida; Liliopsida; Poales; Poaceae; BOP clade;
OC   Pooideae; Triticodae; Triticeae; Hordeinae; Hordeum.
OX   NCBI_TaxID=4513;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=cv. Morex;
RX   PubMed=17534593; DOI=10.1007/s00122-007-0567-4;
RA   Saski C., Lee S.-B., Fjellheim S., Guda C., Jansen R.K., Luo H.,
RA   Tomkins J., Rognli O.A., Daniell H., Clarke J.L.;
RT   "Complete chloroplast genome sequences of Hordeum vulgare, Sorghum bicolor
RT   and Agrostis stolonifera, and comparative analyses with other grass
RT   genomes.";
RL   Theor. Appl. Genet. 115:571-590(2007).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA] OF 1-130.
RX   PubMed=2681197; DOI=10.1016/s0021-9258(18)51479-4;
RA   Scheller H.V., Okkels J.S., Hoej P.B., Svendsen I., Roepstorff P.,
RA   Moeller B.L.;
RT   "The primary structure of a 4.0-kDa photosystem I polypeptide encoded by
RT   the chloroplast psaI gene.";
RL   J. Biol. Chem. 264:18402-18406(1989).
CC   -!- FUNCTION: Seems to be required for the assembly of the photosystem I
CC       complex. {ECO:0000250}.
CC   -!- SUBCELLULAR LOCATION: Plastid, chloroplast thylakoid membrane
CC       {ECO:0000250}; Multi-pass membrane protein {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the Ycf4 family. {ECO:0000305}.
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DR   EMBL; EF115541; ABK79423.1; -; Genomic_DNA.
DR   EMBL; J05104; AAA84051.1; -; Genomic_DNA.
DR   PIR; B34302; B34302.
DR   RefSeq; YP_874663.1; NC_008590.1.
DR   AlphaFoldDB; P20454; -.
DR   GeneID; 4525190; -.
DR   GO; GO:0009535; C:chloroplast thylakoid membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR   GO; GO:0009522; C:photosystem I; IEA:InterPro.
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   Chloroplast; Membrane; Photosynthesis; Plastid; Thylakoid; Transmembrane;
KW   Transmembrane helix.
FT   CHAIN           1..185
FT                   /note="Photosystem I assembly protein Ycf4"
FT                   /id="PRO_0000217608"
FT   TRANSMEM        21..43
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        63..85
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
SQ   SEQUENCE   185 AA;  21740 MW;  7A2EE41343BE9420 CRC64;
     MNWRSEHIWV ELLKGSRKRS NFFWACILFL GSLGFLLVGT SSYLGKNIIS ILPSQEILFF
     PQGVVMSFYG IAGLFISSYL WCTILWNVGS GYDRFDRKEG IVCIFRWGFP GIKRRVFLRF
     LMRDIQSIRI QVKEGLYPRR ILYMEIRGQG IIPLTRTDDK FFTPREIEQK AAELAYFLRV
     PIEVF