释义 |
his·ti·dine \-ˌdēn, -_də̇n\ noun also his·ti·din \-_də̇n\ (-s) Etymology: International Scientific Vocabulary hist- + -idine, -idin; originally formed as German histidin : a crystalline basic amino acid C3H3N2CH2CH(NH2)COOH that is essential in the nutrition of the rat, is synthesized by microorganisms and by plants, and is formed by the decomposition of most proteins (as globin); 4(or 5)-imidazole-alanine |