Assertion: coenzyme | /r/HasProperty | required for catalysis
Facets:
Source sentences:
text: a cofactor helps an enzyme and is loosely bound (a competitive inhibitor by definition wouldn't "aid" an enzyme, the active site is where the reaction takes place; the tricky one is cofactor versus coenzyme, each of which is a non-protein, however, the cofactor is considered to be a helper, whereas the coenzyme is required for catalysis and so the enzyme reaction doesn't work at all unless the coenzyme is present)