cysteine
/ˈsɪstɪiːn/noun
mass noun
1- Biochemistry a sulphur-containing amino acid which occurs in keratins and other proteins, often in the form of cystine, and is a constituent of many enzymes【生化】半胱氨酸,巯基丙氨酸。
1.1
- Chem. formula: HSCH2CH(NH2)COOH.化学分子式： HSCH2CH(NH2)COOH。
词源
late 19th cent.: from CYSTINE + -eine （variant of -INE4 ）.