PSBU_SYNP6
ID PSBU_SYNP6 Reviewed; 136 AA.
AC Q5MZW7;
DT 15-MAR-2005, integrated into UniProtKB/Swiss-Prot.
DT 01-FEB-2005, sequence version 1.
DT 25-MAY-2022, entry version 90.
DE RecName: Full=Photosystem II 12 kDa extrinsic protein {ECO:0000255|HAMAP-Rule:MF_00589};
DE AltName: Full=PS II complex 12 kDa extrinsic protein {ECO:0000255|HAMAP-Rule:MF_00589};
DE AltName: Full=PSII-U {ECO:0000255|HAMAP-Rule:MF_00589};
DE Flags: Precursor;
GN Name=psbU {ECO:0000255|HAMAP-Rule:MF_00589}; OrderedLocusNames=syc2213_d;
OS Synechococcus sp. (strain ATCC 27144 / PCC 6301 / SAUG 1402/1) (Anacystis
OS nidulans).
OC Bacteria; Cyanobacteria; Synechococcales; Synechococcaceae; Synechococcus.
OX NCBI_TaxID=269084;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 27144 / PCC 6301 / SAUG 1402/1;
RX PubMed=17211581; DOI=10.1007/s11120-006-9122-4;
RA Sugita C., Ogata K., Shikata M., Jikuya H., Takano J., Furumichi M.,
RA Kanehisa M., Omata T., Sugiura M., Sugita M.;
RT "Complete nucleotide sequence of the freshwater unicellular cyanobacterium
RT Synechococcus elongatus PCC 6301 chromosome: gene content and
RT organization.";
RL Photosyn. Res. 93:55-67(2007).
CC -!- FUNCTION: Stabilizes the structure of photosystem II oxygen-evolving
CC complex (OEC), the ion environment of oxygen evolution and protects the
CC OEC against heat-induced inactivation. {ECO:0000255|HAMAP-
CC Rule:MF_00589}.
CC -!- SUBUNIT: With PsbO,P,Q and V forms the oxygen-evolving complex of
CC photosystem II. {ECO:0000255|HAMAP-Rule:MF_00589}.
CC -!- SUBCELLULAR LOCATION: Cellular thylakoid membrane {ECO:0000255|HAMAP-
CC Rule:MF_00589}; Peripheral membrane protein {ECO:0000255|HAMAP-
CC Rule:MF_00589}; Lumenal side {ECO:0000255|HAMAP-Rule:MF_00589}.
CC Note=Associated with photosystem II at the lumenal side of the
CC thylakoid membrane. {ECO:0000250}.
CC -!- SIMILARITY: Belongs to the PsbU family. {ECO:0000255|HAMAP-
CC Rule:MF_00589}.
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DR EMBL; AP008231; BAD80403.1; -; Genomic_DNA.
DR RefSeq; WP_011244523.1; NC_006576.1.
DR AlphaFoldDB; Q5MZW7; -.
DR SMR; Q5MZW7; -.
DR STRING; 269084.syc2213_d; -.
DR EnsemblBacteria; BAD80403; BAD80403; syc2213_d.
DR KEGG; syc:syc2213_d; -.
DR eggNOG; COG1555; Bacteria.
DR OMA; LLGCWGW; -.
DR Proteomes; UP000001175; Chromosome.
DR GO; GO:0019898; C:extrinsic component of membrane; IEA:InterPro.
DR GO; GO:0009654; C:photosystem II oxygen evolving complex; 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 GO; GO:0042549; P:photosystem II stabilization; IEA:InterPro.
DR HAMAP; MF_00589; PSII_PsbU; 1.
DR InterPro; IPR010527; PSII_PsbU.
DR Pfam; PF06514; PsbU; 1.
PE 3: Inferred from homology;
KW Electron transport; Membrane; Photosynthesis; Photosystem II; Signal;
KW Thylakoid; Transport.
FT SIGNAL 1..28
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00589"
FT CHAIN 29..136
FT /note="Photosystem II 12 kDa extrinsic protein"
FT /id="PRO_0000029605"
SQ SEQUENCE 136 AA; 15066 MW; 5A489740BE0FA454 CRC64;
MKQLAQRLFS LALVLALVLG ISVQSAQALS LQSPLLAVAE AEIRNEADAQ RIEAGGKLDL
NNIGVRAFQQ FPGMYPYLAS KIVLGGPYDS VDDVLKLDLS DRQREVFEQY KENFTVTPPR
DALNEGDDRI NNGIYR