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coenzyme 音標拼音: [ko'ɛnzɑɪm] 輔酶 輔□ coenzyme n 1: a small molecule (not a protein but sometimes a vitamin) essential for the activity of some enzymes coenzyme \co*en"zyme\ (k[-o]*[e^]n"z[imac]m), (Biochem.)
a molecule that is essential for the activity of some enzymes; it may exist free in solution within a living organism, but functions by binding to an enzyme to assist in catalyzing a reaction. The molecule itself may be temporarily changed during the reaction, but is ultimately restored to its original form. Many vitamins function as coenzymes. [PJC]
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