FEATURES

FAMILY

DESCRIPTION

Also known as PSBA_ARATH, psbA. Photosystem II (PSII) is a light-driven water:plastoquinone oxidoreductase that uses light energy to abstract electrons from H(2)O, generating O(2) and a proton gradient subsequently used for ATP formation. It consists of a core antenna complex that captures photons, and an electron transfer chain that converts photonic excitation into a charge separation. The D1/D2 (PsbA/PsbA) reaction center heterodimer binds P680, the primary electron donor of PSII as well as several subsequent electron acceptors. 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, Ycf12, at least 3 peripheral proteins of the oxygen-evolving complex and a large number of cofactors. It forms dimeric complexes (By similarity). Interacts with PAM68 (PubMed:20923938). The nascent chain still attached to the ribosome interacts with FFC/ cpSRP54, but not with CAO/cpSRP43 or SecA (PubMed:9927433).

EXTERNAL LINKS

psbA

Mutations

Mutation(s) distribution

Mutations table