Aspartic acid is an α-amino acid, which produces 1 molecular oxaloacetic acid through joint deamination, 15 molecular atp through tricarboxylic acid cycle and electron transfer chain, and 2 molecular atp through ornithine cycle to produce urea, which is15+2-2 =/in brain tissue cells through α-glycerophosphate shuttle. Therefore, aspartic acid is completely oxidized and decomposed to produce 15 atp.