The amino group becomes attached to the coenzyme to form pyridoxamine phosphate , and is then transferred to the a - keto acid , which is usually pyruvic acid , oxaloacetic acid , or - ketoglutaric acid 反应中氨基首先连接在辅酶上形成磷酸吡哆氨，然后氨基转移到-酮酸上，这种-酮酸可以为丙酮酸、草酰乙酸或是-酮戊二酸。
