psbA — Pisum sativum

Summary

PSAT1G042000 (symbol psbA) on garden pea chromosome 1LG6 encodes a protein with D1/D2, Photo_RC_L/M, and Photo_II_D1/D2_sf domains. The product possesses oxidoreductase activity acting on diphenols with oxygen as acceptor, oxygen-evolving activity, chlorophyll binding, electron transfer activity, and iron binding. It is localised to the photosystem II complex in the chloroplast thylakoid membrane. The gene is associated with photosynthetic electron transport in photosystem II, the electron transport chain, thylakoid membrane organisation, photoprotection, plastid gene expression and transcription, chloroplast movement, and responses to herbicide. It has also been connected to carotenoid and flavonoid anabolism, protein synthesis and breakdown, translation elongation and initiation, membrane organisation, and homeostasis. Additionally, psbA is linked to protein content. Studies of related genes in other species confirm the family's identity as photosystem II D1 protein.