ABBRE R NAME Ⅵ IATION -CH, CH, CO,H Glutamic acid Glu -CH(CH2)3NH 2 lysine Lys 9.8 CH2(CH2)2NHCNHNH2 Arginine A rg 10.8 H Histidien His 76 H The conversion of cysteine to cystine requires addition comment it can be reversed by mild reducing agents 2HO2 CCHCHOSH[01 HO, CCHCH,S-SCH, CHCO,H NH NH NH Cysteine Cystine (半胱氨酸) (胱氨酸)The conversion of cysteine to cystine requires addition comment. it can be reversed by mild reducing agents. R NAME ABBRE￾VIATION pI -CH2CH2CO2H -CH2 (CH2 ) 3NH2 -CH2 (CH2 ) 2NHCNHNH2 N N H2 C H Glutamic acid Lysine e Arginine Histidien Glu Lys Arg His 3.2 9.8 10.8 7.6 2HO2 CCHCH2 SH NH2 HO2 CCHCH2 S _ SCH2 CHCO2 H NH2 NH2 [0] [H] Cysteine (半胱氨酸) Cystine (胱氨酸)