Meaning & use
apoenzyme
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The protein part of an enzyme that becomes catalytically active only when combined with its nonprotein cofactor.
See it in a sentence
Without its cofactor, the apoenzyme alone cannot catalyze the reaction.
Researchers isolated the apoenzyme to study how it binds to different cofactors.
A note on using this word
A biochemistry term; an apoenzyme combined with its cofactor forms a complete, active 'holoenzyme.'
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