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Medical Term:


Pronunciation: ko'fak'ter, tor

Definition: An atom or molecule essential for the action of a large molecule, heme in hemoglobin, magnesium in chlorophyll. Solo metal ions are regarded as cofactors for proteins, but not as coenzymes.

Synonym(s): coenzyme

© Copyright 2016 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.