AAT1 — Capsicum annuum

Summary

CaAAT1 (T459_05145) on pepper chromosome 2 encodes a cationic amino acid transporter 5, a member of the AA/rel_permease1 family with a CAT_C domain, and exhibits L-lysine, L-glutamate, basic amino acid, and general amino acid permease activity. The gene is associated with L-arginine import, basic amino acid transport, fruit development and ripening, response to wounding, and response to aluminum. It localizes to the plasma membrane, plant-type vacuole, mitochondria, cytoplasm, and intracellular membrane-bounded organelles. CaAAT1 is linked to cell membrane stability, shoot fresh weight, photosynthetic rate, and chlorophyll content, as well as phenotypes including amino acid transport, plant biomass, flowering time, and resistance to Pseudomonas syringae. Studies of related genes in other species connect the family to fruit flavor, ripening, drought and salt tolerance, disease resistance, and volatile ester production.