ID   PSBY_SYNY3              Reviewed;          39 AA.
AC   P73676;
DT   15-DEC-1998, integrated into UniProtKB/Swiss-Prot.
DT   01-FEB-1997, sequence version 1.
DT   03-AUG-2022, entry version 108.
DE   RecName: Full=Photosystem II protein Y {ECO:0000255|HAMAP-Rule:MF_00717};
GN   Name=psbY {ECO:0000255|HAMAP-Rule:MF_00717}; OrderedLocusNames=sml0007;
OS   Synechocystis sp. (strain PCC 6803 / Kazusa).
OC   Bacteria; Cyanobacteria; Synechococcales; Merismopediaceae; Synechocystis;
OC   unclassified Synechocystis.
OX   NCBI_TaxID=1111708;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=PCC 6803 / Kazusa;
RX   PubMed=8905231; DOI=10.1093/dnares/3.3.109;
RA   Kaneko T., Sato S., Kotani H., Tanaka A., Asamizu E., Nakamura Y.,
RA   Miyajima N., Hirosawa M., Sugiura M., Sasamoto S., Kimura T., Hosouchi T.,
RA   Matsuno A., Muraki A., Nakazaki N., Naruo K., Okumura S., Shimpo S.,
RA   Takeuchi C., Wada T., Watanabe A., Yamada M., Yasuda M., Tabata S.;
RT   "Sequence analysis of the genome of the unicellular cyanobacterium
RT   Synechocystis sp. strain PCC6803. II. Sequence determination of the entire
RT   genome and assignment of potential protein-coding regions.";
RL   DNA Res. 3:109-136(1996).
RN   [2]
RP   PROTEIN SEQUENCE OF 1-15, SUBUNIT, AND SUBCELLULAR LOCATION.
RC   STRAIN=PCC 6803 / Kazusa;
RX   PubMed=12069591; DOI=10.1021/bi026012+;
RA   Kashino Y., Lauber W.M., Carroll J.A., Wang Q., Whitmarsh J., Satoh K.,
RA   Pakrasi H.B.;
RT   "Proteomic analysis of a highly active photosystem II preparation from the
RT   cyanobacterium Synechocystis sp. PCC 6803 reveals the presence of novel
RT   polypeptides.";
RL   Biochemistry 41:8004-8012(2002).
CC   -!- FUNCTION: Manganese-binding polypeptide with L-arginine metabolizing
CC       enzyme activity. Component of the core of photosystem II.
CC       {ECO:0000255|HAMAP-Rule:MF_00717}.
CC   -!- SUBUNIT: Cyanobacterial PSII is composed of 1 copy each of membrane
CC       proteins PsbA, PsbB, PsbC, PsbD, PsbE, PsbF, PsbH, PsbI, PsbJ, PsbK,
CC       PsbL, PsbM, PsbT, PsbX, PsbY, PsbZ, Ycf12, at least 3 peripheral
CC       proteins PsbO, PsbU, PsbV and a large number of cofactors. It forms
CC       dimeric complexes. {ECO:0000269|PubMed:12069591}.
CC   -!- SUBCELLULAR LOCATION: Cellular thylakoid membrane {ECO:0000255|HAMAP-
CC       Rule:MF_00717, ECO:0000269|PubMed:12069591}; Single-pass membrane
CC       protein {ECO:0000255|HAMAP-Rule:MF_00717}.
CC   -!- SIMILARITY: Belongs to the PsbY family. {ECO:0000255|HAMAP-
CC       Rule:MF_00717}.
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DR   EMBL; BA000022; BAA17722.1; -; Genomic_DNA.
DR   PIR; S77164; S77164.
DR   PDB; 7N8O; EM; 1.93 A; R/r=1-39.
DR   PDB; 7RCV; EM; 2.01 A; R/r=1-39.
DR   PDBsum; 7N8O; -.
DR   PDBsum; 7RCV; -.
DR   AlphaFoldDB; P73676; -.
DR   SMR; P73676; -.
DR   IntAct; P73676; 1.
DR   STRING; 1148.1652803; -.
DR   PaxDb; P73676; -.
DR   EnsemblBacteria; BAA17722; BAA17722; BAA17722.
DR   KEGG; syn:sml0007; -.
DR   eggNOG; ENOG50314ES; Bacteria.
DR   Proteomes; UP000001425; Chromosome.
DR   GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR   GO; GO:0031676; C:plasma membrane-derived thylakoid membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0030096; C:plasma membrane-derived thylakoid photosystem II; IDA:UniProtKB.
DR   GO; GO:0030145; F:manganese ion binding; IEA:InterPro.
DR   GO; GO:0015979; P:photosynthesis; IEA:UniProtKB-UniRule.
DR   HAMAP; MF_00717; PSII_PsbY; 1.
DR   InterPro; IPR009388; PSII_PsbY.
DR   Pfam; PF06298; PsbY; 1.
PE   1: Evidence at protein level;
KW   3D-structure; Direct protein sequencing; Membrane; Photosynthesis;
KW   Photosystem II; Reference proteome; Thylakoid; Transmembrane;
KW   Transmembrane helix.
FT   CHAIN           1..39
FT                   /note="Photosystem II protein Y"
FT                   /id="PRO_0000216897"
FT   TRANSMEM        5..23
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00717"
FT   HELIX           3..33
FT                   /evidence="ECO:0007829|PDB:7N8O"
SQ   SEQUENCE   39 AA;  4202 MW;  3EA176ABAA79F6DF CRC64;
     MDWRVIVVVS PLLIAATWAA INIGAAAIRQ LQDVLGREA