A substance, microorganism or environmental factor that activates or enhances the action of another entity such as a disease-causing agent.
A nonprotein component required by some enzymes for activity. The cofactor may be a metal ion or an organic molecule called a coenzyme. The term “cofactor” is a general term. Cofactors are generally heat stable.
Any factor, such as stress, malnutrition, or infection by another microorganism, that increases the likelihood of developing a particular disease.
A small molecule needed for the activity of an enzyme. Many of the essential minerals serve as cofactors.
Cofactor is a molecule that assists an enzyme in catalyzing a chemical reaction but does not participate directly in the reaction catalyzed by the enzyme. Some cofactors can participate with more than one enzyme.
Substance (e.g., a coenzyme) that must join with another to produce a given result.
A substance that is essential to the function of an enzyme.
A nonprotein substance that must be present in suitable amounts before certain enzymes can act. Cofactors include ‘coenzymes and metal ions (e.g. sodium and potassium ions).
A biochemical or physiological agent that produces an effect in conjunction with other agents.