co.fac.tor

cofactor的音标和读音：
DJ音标发音： [ˈkouˌfæktə]
KK音标发音： [ˈkoˌfæktɚ]

cofactor的词性：
n.（名词）

1. A substance, such as a metallic iron or coenzyme, that must be associated with an enzyme for the enzyme to function.
辅助因素：必须与酶联合以使酶起作用的一种物质，例如金属铁或辅酶