PGR5 — Arabidopsis thaliana

Summary

AT2G05620, known as PGR5 (proton gradient regulation 5) in Arabidopsis thaliana, encodes a protein with oxidoreductase activity acting on iron-sulfur proteins as donors and electron transfer activity. It localises to the chloroplast thylakoid membrane and stroma. PGR5 is associated with photosynthetic electron transport in photosystem I, cyclic electron flow, energy quenching, chlororespiration, and cellular response to light intensity. It is linked to photosynthetic stability, chloroplast development, photosystem I photoinhibition, and photoprotection. Associations with traits include photosynthetic rate, quantum yield, herbicide sensitivity, relative growth rate, high temperature and oxidative stress responses, disease tolerance, and arsenic concentration. Related genes in other species link the family to carotenoid content.