psbA — Zea mays

Summary

ZM00001EB438280, the maize psbA gene on chromosome scaf_178, encodes a protein of the PSII_D1 family, with domains including Photo_RC_L/M_CS, Photo_II_D1/D2_sf, Photo_RC_L/M, and D1/D2. The product is a chlorophyll-binding oxidoreductase with oxygen-evolving activity and electron transfer activity, classified under EC 1.10.3.9. It localises to the chloroplast thylakoid membrane and photosystem II. The gene is associated with C4 photosynthesis, light absorption, plastid gene expression, membrane biogenesis, cellular respiration, nitrogen fixation, and ribosome hibernation. It has been linked to traits including net photosynthetic rate, quantum yield, chlorophyll content, leaf color, leaf curling, leaf size, water use efficiency, stomatal resistance, drought tolerance, cytoplasmic male sterility, heterosis, respiration rate, carbohydrate content, and protein content. Studies of related genes in other species link the family to grain protein content.