AAT — Glycine max

Summary

GLYMA_11G238300V4, designated GmAAT, encodes a pyridoxal phosphate-dependent aminotransferase belonging to the AspAT/PAT-like family, with experimentally confirmed nicotianamine aminotransferase, L-tyrosine-2-oxoglutarate transaminase, L-aspartate:prephenate transaminase, L-glutamate:prephenate transaminase, L-aspartate:2-oxoglutarate transaminase, and 1-aminocyclopropane-1-carboxylate synthase activities. In soybean, this gene is associated with glutamate homeostasis, tyrosine breakdown, L-phenylalanine anabolism, ethylene biosynthesis, embryogenesis, embryo development ending in seed dormancy, fruit ripening, systemic acquired resistance mediated by salicylic acid signaling, and electron transfer. It localizes to the amyloplast membrane and chloroplast stroma. The gene is linked to glufosinate sensitivity and amino acid content. Studies of related genes in other species connect the family to nitrogen metabolism, while sequence similarity links GmAAT to seed protein content, drought tolerance, root length, and fruit shape.