Which of the following amino acids does not exist in protein molecule A: cysteine B: histidine C: citrulline D: arginine E: lysine
Which of the following amino acids does not exist in protein molecule A: cysteine B: histidine C: citrulline D: arginine E: lysine
下列氨基酸中()具有非极性疏水侧链。 A: alanin(Ala) B: histidine(His) C: arginine(Arg) D: valine(val)
下列氨基酸中()具有非极性疏水侧链。 A: alanin(Ala) B: histidine(His) C: arginine(Arg) D: valine(val)
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