∞ generated and posted on 2016.01.24 ∞

Non-protein organic or inorganic substance that is required for protein functioning.

Not generally included among cofactors are an enzyme's primary substrate or substrates, though in some cases this distinction can be blurred. Nonetheless of cofactor but not a substrate can be viewed as a component of a holoenzyme.

While cofactor and coenzyme are not always distinguished in terms of meaning, when they are then cofactor has the broader meaning versus the limitation of the meaning of coenzyme to, essentially, (though that term too can be somewhat ambiguous in meaning).

Many of the found in your body and , particularly , serve as . as well as additional organic growth factors instead often serve as organic cofactors, that is, as coenzymes.