Significance of the photosystem II core phosphatase PBCP for plant viability and protein repair in thylakoid membranes.

PSII undergoes photodamage, which results in photoinhibition-the light-induced loss of photosynthetic activity. The main target of damage in PSII is the reaction center protein D1, which is buried in the massive 1.4 MDa PSII holocomplex.