IM — Pisum sativum

Summary

PsIM (PSAT1G177440) on chromosome 1LG6 encodes an alternative oxidase (AOX) family protein with ubiquinol:oxygen oxidoreductase, alternative oxidase, and superoxide-generating NADPH oxidase activities, and metal binding. It is associated with alternative respiration, plastid organization, photosynthetic electron transport chain, electron transport chain, carotenoid anabolism, electron transfer, response to high light intensity, response to thermal stimulus, chlorophyll fluorescence, chloroplast organization, and cell death. The protein localizes to the respirasome, mitochondrial inner membrane, thylakoid, and membrane. PsIM is linked to photosynthetic rate and stomatal resistance, as well as photosynthetic electron transport and plastoquinone redox state. Related genes in other species link the family to plastoquinol oxidase activity, phytoene desaturation, carotenoid accumulation, chloroplast development, leaf pigmentation, photoprotection, and stress tolerance.