ID   PSBC_PROHO              Reviewed;         458 AA.
AC   P51753;
DT   01-OCT-1996, integrated into UniProtKB/Swiss-Prot.
DT   01-OCT-1996, sequence version 1.
DT   03-AUG-2022, entry version 83.
DE   RecName: Full=Photosystem II CP43 reaction center protein {ECO:0000255|HAMAP-Rule:MF_01496};
DE   AltName: Full=PSII 43 kDa protein {ECO:0000255|HAMAP-Rule:MF_01496};
DE   AltName: Full=Protein CP-43 {ECO:0000255|HAMAP-Rule:MF_01496};
GN   Name=psbC {ECO:0000255|HAMAP-Rule:MF_01496};
OS   Prochlorothrix hollandica.
OC   Bacteria; Cyanobacteria; Pseudanabaenales; Prochlorotrichaceae;
OC   Prochlorothrix.
OX   NCBI_TaxID=1223;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RA   Nalty M.S., Sharp M., Mor T., Golden S.S.;
RL   Submitted (NOV-1995) to the EMBL/GenBank/DDBJ databases.
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_01496}.
CC   -!- COFACTOR:
CC       Note=Binds multiple chlorophylls and provides some of the ligands for
CC       the Ca-4Mn-5O cluster of the oxygen-evolving complex. It may also
CC       provide a ligand for a Cl- that is required for oxygen evolution. PSII
CC       binds additional chlorophylls, carotenoids and specific lipids.
CC       {ECO:0000255|HAMAP-Rule:MF_01496};
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_01496}.
CC   -!- SUBCELLULAR LOCATION: Cellular thylakoid membrane {ECO:0000255|HAMAP-
CC       Rule:MF_01496}; Multi-pass membrane protein {ECO:0000255|HAMAP-
CC       Rule:MF_01496}.
CC   -!- SIMILARITY: Belongs to the PsbB/PsbC family. PsbC subfamily.
CC       {ECO:0000255|HAMAP-Rule:MF_01496}.
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DR   EMBL; U40144; AAA82945.1; -; Genomic_DNA.
DR   AlphaFoldDB; P51753; -.
DR   SMR; P51753; -.
DR   PRIDE; P51753; -.
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:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR   GO; GO:0009772; P:photosynthetic electron transport in photosystem II; IEA:InterPro.
DR   Gene3D; 1.10.10.670; -; 1.
DR   HAMAP; MF_01496; PSII_PsbC_CP43; 1.
DR   InterPro; IPR000932; PS_antenna-like.
DR   InterPro; IPR036001; PS_II_antenna-like_sf.
DR   InterPro; IPR005869; PSII_PsbC.
DR   InterPro; IPR044900; PSII_PsbC_sf.
DR   PANTHER; PTHR33180; PTHR33180; 1.
DR   Pfam; PF00421; PSII; 1.
DR   SUPFAM; SSF161077; SSF161077; 1.
DR   TIGRFAMs; TIGR01153; psbC; 1.
PE   3: Inferred from homology;
KW   Chlorophyll; Chromophore; Manganese; Membrane; Metal-binding;
KW   Photosynthesis; Photosystem II; Thylakoid; Transmembrane;
KW   Transmembrane helix.
FT   CHAIN           1..458
FT                   /note="Photosystem II CP43 reaction center protein"
FT                   /id="PRO_0000077530"
FT   TRANSMEM        58..73
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01496"
FT   TRANSMEM        124..138
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01496"
FT   TRANSMEM        165..181
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01496"
FT   TRANSMEM        247..261
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01496"
FT   TRANSMEM        277..292
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01496"
FT   TRANSMEM        437..453
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01496"
FT   BINDING         352
FT                   /ligand="[CaMn4O5] cluster"
FT                   /ligand_id="ChEBI:CHEBI:189552"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01496"
SQ   SEQUENCE   458 AA;  50270 MW;  416876C110041719 CRC64;
     MVTLSDRFVG SDLKTSGYPW WAGNARLINL SGKLLGAHVA HAGLIVFWAG AMTLFEVAHF
     TPEKPLYEQG DILLPHLASL GWGVGPGGEI TDITPYFIVG VLHLISSAVL GLGGVYHTLR
     GPETLEQYSD FFSQDWKDKN QMTNILGFHL IVLGIGASLF VFKAMFFGGL YDPWVPGGGG
     VRVITNPTLS PSVLFGYLFR SPFGGEGWLI GVNNMEDVVG GHIWVALHCF IGGAWHLITR
     PFNWARRSLV WSGEAYLSYS LGALSLMGFI ASMFVWFNNT VYPSEFYGPT GSEASQAQSF
     TFLIRDQRLG ANIASAQGPT GLGKYLMRSP TGEVIFGGET MRFWDFRGPW LEPLRGPNGL
     DLDKLNNDVQ PWQIRRAAEY MTHAPLASIN SVGGVITEPN SVNYVNLRQW LAGSHFILGF
     FFLIGHLWHA GRARAAAAGF EKGIDRKTEP VLSMSDLD