apoenzyme

n.
The protein component of an enzyme, to which the coenzyme attaches to form an active enzyme.

The protein part of an enzyme which requires a coenzyme for activity, and is therefore inactive if the coenzyme is absent. See also coenzyme; enzyme activation; prosthetic group.

(ăp'ō-ĕn'zīm)
n.

The protein component of an enzyme that combines with the coenzyme to form the active enzyme.

The protein component of an enzyme that requires the presence of the prosthetic group (cofactor) to form the functioning enzyme.

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The noun has one meaning:

Meaning #1: a protein that combines with a coenzyme to form an active enzyme

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