AAT — Zea mays

Summary

ZM00001EB122460 (ZmAAT, also known as ZmVAS1, ZmPAT, ZmISS1, ZmIDI4, and ZmMEE17) on maize chromosome 3 encodes a pyridoxal phosphate-dependent aminotransferase with multiple activities, including kynurenine-oxoglutarate, LL-diaminopimelate, methionine-oxo-acid, and prephenate transaminase activities, as well as 1-aminocyclopropane-1-carboxylate synthase activity. The gene is associated with inhibition of IAA biosynthetic process, negative regulation of ethylene biosynthetic process, cytokinin anabolism, tyrosine breakdown, carotene anabolism, L-phenylalanine anabolism, shade avoidance, shoot regeneration, and systemic acquired resistance, salicylic acid mediated signaling pathway. It has been linked to grain yield, plant height, leaf angle, days to maturity, seedling vigor, carotenoid content, and insect damage. The protein localizes to the chloroplast stroma, mitochondria, and cytosol. Studies of related genes in other species connect the family to grain protein content, drought tolerance, and salinity stress response.