Alanine is formed by transamination when an amino group is donated by gutamine to pyruvic acid.It may be deaminated back to pyruvate for use in the KREBS CYCLE.

• 它通过转氨作用形成，氨基由谷氨酰氨提供给丙酮酸，它还可以脱去氨基重新形成丙酮酸在三羧酸循环中使用。