含芳香基团 含碱性侧链基团(带正电荷) Aromatic R groups Positively charged R C00 CO0 cO0 cO0 HgN-C-H H3N-C-H H3N-C-H H3N-C-H H3N-C-H H3N-C-H CH2 CH C CH CH CH NH NHs C=NH2 nH2 Phe nenvlalanine tryptophan Lysine Histidine Phe, F; Tyr, Y; Trp, W LVs. K: Arg. R: his H含芳香基团 含碱性侧链基团（带正电荷） Phe, F; Tyr, Y; Trp, W Lys, K; Arg, R; His, H