CHs OH HC- NH2 NH2 CHa NH NH2 甘氯酸Glycine 丙氨酸Alanine 缬氨酸Valine 亮氨骏Leucine H NH2 H2N OH 异亮氨酸Isoleucine 苯丙氨骏 色氛酸Tryptophan 酪氨酸Tyrosine Phenylalanine OH 天冬氨酸Aspartic acid 组氨酸Histidine 天餐腔Asparagine 谷麸)氯酸Glutamic acid H2N H HN N H HaC-S OH 赖氨酸Lysine 谷肤两酰胶 甲硫氨敢Methionine 精氨酸Arginine O Glutamine OH HO OH OH HS OH OH NH2 NH NH 丝氯酸Serine 方酸Threonine 半胱氛敢Cysteine 脯虱酸Proline