碱生氨基酸 BASIC AMINO ACIDS NH ● Hg C-NH2 CH2 CH2 CH2 CHe CH CH2 CH2 HaN-C HsN一 C-COO H N-C- coo H H H Histidine (His)H Lysine (Lys)K Arginine (Arg)R碱性氨基酸