1.An enzyme without its cofactor is termed an apoenzyme.

1.没有助因子的酶叫做酶。

2.Some holoenzymes, such as pyruvate dehydrogenase, are highly compex, with several cofactors.

2.有一些全酶是高度复杂的，如丙酮酸氢酶。

3.A cofactor bound loosely to the apoenzyme and readily separable from it is a coenzyme.

3.蛋白结松弛、易分离的因子称为。

4.When a catalytically active enzyme forms a complex with a cofactor a holoenzyme is produced.

4.酶蛋白和助因子两者结成完整分子时，形成具有活力的全酶。

5.Methylmalonic acidemia is an inherited metabolic disorder,which is caused by deficiency of methylmalonyl-coenzyme A mutase or its cofactor adenosylcobalamin.

5.甲丙二酸血症是由甲丙二酰酶A变位酶或其酶腺苷钴胺素缺陷所致的一种遗传性代谢疾病。