ID   PSBB_PROHO              Reviewed;         514 AA.
AC   P27200;
DT   01-AUG-1992, integrated into UniProtKB/Swiss-Prot.
DT   01-AUG-1992, sequence version 1.
DT   03-AUG-2022, entry version 86.
DE   RecName: Full=Photosystem II CP47 reaction center protein {ECO:0000255|HAMAP-Rule:MF_01495};
DE   AltName: Full=PSII 47 kDa protein {ECO:0000255|HAMAP-Rule:MF_01495};
DE   AltName: Full=Protein CP-47 {ECO:0000255|HAMAP-Rule:MF_01495};
GN   Name=psbB {ECO:0000255|HAMAP-Rule:MF_01495};
OS   Prochlorothrix hollandica.
OC   Bacteria; Cyanobacteria; Pseudanabaenales; Prochlorotrichaceae;
OC   Prochlorothrix.
OX   NCBI_TaxID=1223;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX   PubMed=1840692; DOI=10.1007/bf00037072;
RA   Greer K.L., Golden S.S.;
RT   "Nucleotide sequence of psbB from Prochlorothrix hollandica.";
RL   Plant Mol. Biol. 17:915-917(1991).
CC   -!- FUNCTION: One of the components of the core complex of photosystem II
CC       (PSII). It binds chlorophyll and helps catalyze the primary light-
CC       induced photochemical processes of PSII. PSII is a light-driven
CC       water:plastoquinone oxidoreductase, using light energy to abstract
CC       electrons from H(2)O, generating O(2) and a proton gradient
CC       subsequently used for ATP formation. {ECO:0000255|HAMAP-Rule:MF_01495}.
CC   -!- COFACTOR:
CC       Note=Binds multiple chlorophylls. PSII binds additional chlorophylls,
CC       carotenoids and specific lipids. {ECO:0000255|HAMAP-Rule:MF_01495};
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:0000255|HAMAP-Rule:MF_01495}.
CC   -!- SUBCELLULAR LOCATION: Cellular thylakoid membrane {ECO:0000255|HAMAP-
CC       Rule:MF_01495}; Multi-pass membrane protein {ECO:0000255|HAMAP-
CC       Rule:MF_01495}.
CC   -!- SIMILARITY: Belongs to the PsbB/PsbC family. PsbB subfamily.
CC       {ECO:0000255|HAMAP-Rule:MF_01495}.
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DR   EMBL; X59614; CAA42177.1; -; Genomic_DNA.
DR   PIR; S17739; QJMWPB.
DR   AlphaFoldDB; P27200; -.
DR   SMR; P27200; -.
DR   GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR   GO; GO:0009523; C:photosystem II; IEA:UniProtKB-KW.
DR   GO; GO:0031676; C:plasma membrane-derived thylakoid membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0016168; F:chlorophyll binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0045156; F:electron transporter, transferring electrons within the cyclic electron transport pathway of photosynthesis activity; IEA:InterPro.
DR   GO; GO:0009772; P:photosynthetic electron transport in photosystem II; IEA:InterPro.
DR   HAMAP; MF_01495; PSII_PsbB_CP47; 1.
DR   InterPro; IPR000932; PS_antenna-like.
DR   InterPro; IPR036001; PS_II_antenna-like_sf.
DR   InterPro; IPR017486; PSII_PsbB.
DR   PANTHER; PTHR33180; PTHR33180; 1.
DR   Pfam; PF00421; PSII; 1.
DR   SUPFAM; SSF161077; SSF161077; 1.
DR   TIGRFAMs; TIGR03039; PS_II_CP47; 1.
PE   3: Inferred from homology;
KW   Chlorophyll; Chromophore; Membrane; Photosynthesis; Photosystem II;
KW   Thylakoid; Transmembrane; Transmembrane helix.
FT   CHAIN           1..514
FT                   /note="Photosystem II CP47 reaction center protein"
FT                   /id="PRO_0000077502"
FT   TRANSMEM        21..36
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01495"
FT   TRANSMEM        109..123
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01495"
FT   TRANSMEM        148..164
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01495"
FT   TRANSMEM        211..226
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01495"
FT   TRANSMEM        245..260
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01495"
FT   TRANSMEM        465..480
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01495"
SQ   SEQUENCE   514 AA;  56857 MW;  AE3AC95730953A50 CRC64;
     MGLPWYRVHT AVINDPGRLL AVHLMHTALV LGWAGSMALY ELAVFDPSDA VLNPMWRQGM
     FVLPFMTRLG VTHSWSGWTV TGEPWINEPG FLNAHFNFWS YEGVALMHIV LSGLFFLAAV
     WHWVYWDLDL FEDPRTGEPA LDLPKIFGGH LFLLGFLCFN FGTFHLTGIF GPGMWVSDAY
     GLTGHIEHIA PEWGPAGFNP FNPGGVVAHH IAAGITLMIG GVFHLTARPP ERLYTALRMG
     NVETALASAI AAVFGAAFVV AGTMWYGHVT TPIELFGPTR YQWDQGYFTQ EIQRRVDSQL
     AEGASLSEAW SSIPEKLAFY DYVGNSPAKG GLFRVGAMDS GDGIAEEWLG HPVFQDGAGR
     ALSVRRLPNF FENFPVILTD GDGVVRADIP FRRSESQYSF EQTGVTVSFY GGALDGQTFT
     NPSDVKKFAR RAQLGEAFDF DTETLGSDGV FRTSTRGWFT FGHACFALLF FFGHIWHGAR
     TLFRDVFAGI DADLGEQIEF GAFQKLGDLT TRKS