psbA — Lactuca sativa

Summary

psbA (LSAT_V11C100003050) on chromosome 1 of garden lettuce (Lactuca sativa) encodes a protein of the Photo_RC_L/M domain family. The product possesses oxidoreductase activity acting on diphenols and related substances with oxygen as acceptor, oxygen-evolving activity, chlorophyll binding, electron transfer activity, and iron binding. It localizes to the photosystem II complex in the chloroplast thylakoid membrane. The gene is associated with photosynthetic electron transport in photosystem II, autotrophy, homologous recombination, response to herbicide, and regeneration. It has been linked to photosynthetic rate and chlorophyll content. Studies of related genes in other species connect the family to leaf chlorophyll content, fruit color, quantum yield, fruit weight, net photosynthetic rate, starch content, sugar content, protein content, photochemical quenching, and salt tolerance.