下列哪项不是构成蛋白质的氨基酸? ( )
A.NH2—CH—COOH | B.CH3—CH—COOH | | CH3 CH2—NH2 |
C.CH2—CH—COOH | D.NH2—CH—COOH |
| | |
SH NH2 CH2—COOH
下列哪项不是构成蛋白质的氨基酸? ( )
A.NH2—CH—COOH | B.CH3—CH—COOH | | CH3 CH2—NH2 |
C.CH2—CH—COOH | D.NH2—CH—COOH |
| | |
SH NH2 CH2—COOH