在生物体内组成蛋白质的氨基酸约有20种. 　　GGlyGlycine甘氨酸亲水性75.076.062.359.78-H 　　AAlaAlanine丙氨酸疏水性89.096.112.359.87-CH3 　　VValValine缬氨酸疏水性117.156.002.399.74-CH-(CH3)2 　　LLeuLeucine亮氨酸疏水性131.176.012.339.74-CH2-CH(CH3)2 　　IIleIsoleucine异亮氨酸疏水性131.176.052.329.76-CH(CH3)-CH2-CH3 　　FPhePhenylalanine苯丙氨酸疏水性165.195.492.209.31-CH2-C6H5 　　WTrpTryptophan色氨酸疏水性204.235.892.469.41-C8NH6 　　YTyrTyrosine酪氨酸疏水性181.195.642.209.2110.46-CH2-C6H4-OH 　　DAspAsparticacid天冬氨酸酸性133.102.851.999.903.90-CH2-COOH 　　NAsnAsparagine天冬酰胺亲水性132.125.412.148.72-CH2-CONH2 　　EGluGlutamicacid谷氨酸酸性147.133.152.109.474.07-(CH2)2-COOH 　　KLysLysine赖氨酸碱性146.199.602.169.0610.54-(CH2)4-NH2 　　QGlnGlutamine谷氨酰胺亲水性146.155.652.179.13-(CH2)2-CONH2 　　MMetMethionine甲硫氨酸疏水性149.215.742.139.28-(CH2)-S-CH3 　　SSerSerine丝氨酸亲水性105.095.682.199.21-CH2-OH 　　TThrThreonine苏氨酸亲水性119.125.602.099.10-CH(CH3)-OH 　　CCysCysteine半胱氨酸亲水性121.165.051.9210.708.37-CH2-SH 　　PProProline脯氨酸疏水性115.136.301.9510.64-C3H6 　　HHisHistidine组氨酸碱性155.167.601.809.336.04 　　RArgArginine精氨酸碱性174.2010.761.828.9912.48