几种AA的pK和pI值 AA pK(-COOH) pK'2(-NH2) pK'R pl Gly 2.34 9.60 5.97 Asp 2.09 9.82 3.86 2.97 Lys 2.18 9.17 10.349.74 详见P27表2-2几种AA的pK和pI值 AA pK`1 (-COOH) pK`2 (-NH2 ) pK`R pI Gly 2.34 9.60 5.97 Asp 2.09 9.82 3.86 2.97 Lys 2.18 9.17 10.34 9.74 详见P27表2-2