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PSBE_MICAN
ID   PSBE_MICAN              Reviewed;          81 AA.
AC   B0JLV1;
DT   14-APR-2009, integrated into UniProtKB/Swiss-Prot.
DT   18-MAR-2008, sequence version 1.
DT   03-AUG-2022, entry version 80.
DE   RecName: Full=Cytochrome b559 subunit alpha {ECO:0000255|HAMAP-Rule:MF_00642};
DE   AltName: Full=PSII reaction center subunit V {ECO:0000255|HAMAP-Rule:MF_00642};
GN   Name=psbE {ECO:0000255|HAMAP-Rule:MF_00642}; OrderedLocusNames=MAE_33030;
OS   Microcystis aeruginosa (strain NIES-843 / IAM M-2473).
OC   Bacteria; Cyanobacteria; Oscillatoriophycideae; Chroococcales;
OC   Microcystaceae; Microcystis.
OX   NCBI_TaxID=449447;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=NIES-843 / IAM M-247;
RX   PubMed=18192279; DOI=10.1093/dnares/dsm026;
RA   Kaneko T., Nakajima N., Okamoto S., Suzuki I., Tanabe Y., Tamaoki M.,
RA   Nakamura Y., Kasai F., Watanabe A., Kawashima K., Kishida Y., Ono A.,
RA   Shimizu Y., Takahashi C., Minami C., Fujishiro T., Kohara M., Katoh M.,
RA   Nakazaki N., Nakayama S., Yamada M., Tabata S., Watanabe M.M.;
RT   "Complete genomic structure of the bloom-forming toxic cyanobacterium
RT   Microcystis aeruginosa NIES-843.";
RL   DNA Res. 14:247-256(2007).
CC   -!- FUNCTION: This b-type cytochrome is tightly associated with the
CC       reaction center of photosystem II (PSII). PSII is a light-driven
CC       water:plastoquinone oxidoreductase that uses light energy to abstract
CC       electrons from H(2)O, generating O(2) and a proton gradient
CC       subsequently used for ATP formation. It consists of a core antenna
CC       complex that captures photons, and an electron transfer chain that
CC       converts photonic excitation into a charge separation.
CC       {ECO:0000255|HAMAP-Rule:MF_00642}.
CC   -!- COFACTOR:
CC       Name=heme b; Xref=ChEBI:CHEBI:60344;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00642};
CC       Note=With its partner (PsbF) binds heme. PSII binds additional
CC       chlorophylls, carotenoids and specific lipids. {ECO:0000255|HAMAP-
CC       Rule:MF_00642};
CC   -!- SUBUNIT: Heterodimer of an alpha subunit and a beta subunit.
CC       Cyanobacterial PSII is composed of 1 copy each of membrane proteins
CC       PsbA, PsbB, PsbC, PsbD, PsbE, PsbF, PsbH, PsbI, PsbJ, PsbK, PsbL, PsbM,
CC       PsbT, PsbX, PsbY, PsbZ, Ycf12, at least 3 peripheral proteins PsbO,
CC       PsbU, PsbV and a large number of cofactors. It forms dimeric complexes.
CC       {ECO:0000255|HAMAP-Rule:MF_00642}.
CC   -!- SUBCELLULAR LOCATION: Cellular thylakoid membrane {ECO:0000255|HAMAP-
CC       Rule:MF_00642}; Single-pass membrane protein {ECO:0000255|HAMAP-
CC       Rule:MF_00642}.
CC   -!- SIMILARITY: Belongs to the PsbE/PsbF family. {ECO:0000255|HAMAP-
CC       Rule:MF_00642}.
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DR   EMBL; AP009552; BAG03125.1; -; Genomic_DNA.
DR   RefSeq; WP_002749269.1; NC_010296.1.
DR   AlphaFoldDB; B0JLV1; -.
DR   SMR; B0JLV1; -.
DR   STRING; 449447.MAE_33030; -.
DR   PaxDb; B0JLV1; -.
DR   EnsemblBacteria; BAG03125; BAG03125; MAE_33030.
DR   GeneID; 66707075; -.
DR   KEGG; mar:MAE_33030; -.
DR   eggNOG; ENOG5032RR6; Bacteria.
DR   HOGENOM; CLU_194095_0_0_3; -.
DR   OMA; VRYWVIH; -.
DR   OrthoDB; 1863986at2; -.
DR   BioCyc; MAER449447:MAE_RS14285-MON; -.
DR   Proteomes; UP000001510; Chromosome.
DR   GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR   GO; GO:0009539; C:photosystem II reaction center; IEA:InterPro.
DR   GO; GO:0031676; C:plasma membrane-derived thylakoid membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0009055; F:electron transfer activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0020037; F:heme binding; IEA:InterPro.
DR   GO; GO:0005506; F:iron ion binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0009767; P:photosynthetic electron transport chain; IEA:InterPro.
DR   Gene3D; 1.20.5.860; -; 1.
DR   HAMAP; MF_00642; PSII_PsbE; 1.
DR   InterPro; IPR006217; PSII_cyt_b559_asu.
DR   InterPro; IPR037025; PSII_cyt_b559_asu_sf.
DR   InterPro; IPR006216; PSII_cyt_b559_CS.
DR   InterPro; IPR013081; PSII_cyt_b559_N.
DR   InterPro; IPR013082; PSII_cytb559_asu_lum.
DR   Pfam; PF00283; Cytochrom_B559; 1.
DR   Pfam; PF00284; Cytochrom_B559a; 1.
DR   PIRSF; PIRSF000036; PsbE; 1.
DR   TIGRFAMs; TIGR01332; cyt_b559_alpha; 1.
DR   PROSITE; PS00537; CYTOCHROME_B559; 1.
PE   3: Inferred from homology;
KW   Electron transport; Heme; Iron; Membrane; Metal-binding; Photosynthesis;
KW   Photosystem II; Reference proteome; Thylakoid; Transmembrane;
KW   Transmembrane helix; Transport.
FT   CHAIN           1..81
FT                   /note="Cytochrome b559 subunit alpha"
FT                   /id="PRO_1000130900"
FT   TRANSMEM        21..35
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00642"
FT   BINDING         23
FT                   /ligand="heme"
FT                   /ligand_id="ChEBI:CHEBI:30413"
FT                   /ligand_note="ligand shared with beta subunit"
FT                   /ligand_part="Fe"
FT                   /ligand_part_id="ChEBI:CHEBI:18248"
FT                   /note="axial binding residue"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00642"
SQ   SEQUENCE   81 AA;  9418 MW;  6571B52747A74099 CRC64;
     MSGSTGERPF GDIVTSIRYW IIHSITIPML FIAGWLFVST GLAYDVFGTP RPDEYYTQER
     QELPIINDRF EAKNQIEQFN Q
 
 
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