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Related to cosubstrate: cofactor


The second or other substrate of a multisubstrate enzyme; often, specifically refers to the coenzyme.
References in periodicals archive ?
Oxidized HCY is first reduced to free HCY, which then reacts with a cosubstrate, S-adenosylmethionine (SAM), catalyzed by an HCY S-methyltransferase to form methionine (the HCY conversion product of HCY) and Sadenosylhomocysteine (SAH, the cosubstrate conversion product, which does not contain any element from the sample homocysteine molecule).