PsbS is a ubiquitous pigment-binding protein associated with photosystem II (PSII) of higher plants, which is involved in nonphotochemical quenching rather than in photosynthesis. Mutant has a normal violaxanthin cycle but has a limited capacity of quenching singlet excited chlorophylls and is tolerant to lipid peroxidation.
The D1/D2 (PsbA/PsbD) reaction center heterodimer binds P680, the primary electron donor of PSII as well as several subsequent electron acceptors. D2 is needed for assembly of a stable PSII complex.
CP43 is a component of the proximal antenna of PSII and contains six transmembrane alpha helices and five hydrophilic loops that connect the membrane-spanning domains. CP43 is encoded by the psbC gene (ATCG00280).
CP47 is one of the components of the core complex of photosystem II (PSII). It binds chlorophyll and helps catalyze the primary light-induced photochemical processes of PSII. CP47 is encoded by ATCG00680.
PsbP is a 23 kD extrinsic subunit of the oxygen evolving complex of Photosystem II. PsbP participates in the regulation of oxygen evolution and stabilizes the oxygen evolving complex of PSII.
PsbP, 23 kDa protein of the oxygen evolving complex (OEC) of PSII, Oxygen-evolving enhancer protein 2-1, chloroplastic
Background:
PsbP is a 23 kD extrinsic subunit of the oxygen evolving complex of Photosystem II. PsbP participates in the regulation of oxygen evolution and stabilizes the oxygen evolving complex of PSII.
PsbW, Photosystem II reaction center W protein, chloroplastic, PSII 6.1 kDa protein
Background:
PsbW is a nuclear-encoded PSII subunit and found in higher plants but not in cyanobacteria. PsbW has an apparent molecular mass of 6.1 kDa containing 54 amino acids.