FEATURES

FAMILY

DESCRIPTION

Also known as PSBB_THEVB, psbB. 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. PSII is a light-driven water:plastoquinone oxidoreductase, using light energy to abstract electrons from H(2)O, generating O(2) and a proton gradient subsequently used for ATP formation. PSII is composed of 1 copy each of membrane proteins PsbA, PsbB, PsbC, PsbD, PsbE, PsbF, PsbH, PsbI, PsbJ, PsbK, PsbL, PsbM, PsbT, PsbX, PsbY, PsbZ, Psb30/Ycf12, peripheral proteins PsbO, CyanoQ (PsbQ), PsbU, PsbV and a large number of cofactors. It forms dimeric complexes. Part of a photosystem II (PSII) assembly intermediate complex PSII-I; crystallized from a strain deleted of psbJ, it forms monomeric PSII before addition of the oxygen evolving complex. PSII-I includes 3 assembly factors not found in mature PSII (Psb27, Psb28 and Psb34) (PubMed:33846594).

EXTERNAL LINKS

psbB

Photosystem II CP47 reaction center protein

psbB

Molecular Synopsis