AAT — Capsicum annuum

Summary

CaAAT (T459_30259) on pepper chromosome 12 encodes a pyridoxal phosphate-dependent aminotransferase with multiple activities, including L-glutamate:prephenate, L-aspartate:prephenate, nicotianamine, L-tyrosine-2-oxoglutarate, L-aspartate:2-oxoglutarate, and 1-aminocyclopropane-1-carboxylate synthase activities. The gene is associated with tyrosine breakdown, L-phenylalanine anabolism, ethylene anabolism, amino acid metabolism, fruit development, fruit ripening, and embryo development ending in seed dormancy. It localises to the amyloplast membrane and chloroplast stroma. CaAAT is linked to aromatic amino acid biosynthesis and parthenocarpic fruit development. Studies of related genes in other species connect the aminotransferase family to carotenoid content, chlorophyll content, root morphology, and nitrogen metabolism.