Marker enzymes A convenient way of determining the purity of an organelle preparation is to measure the activity of a a marker enzyme in the various subcellular compartment of the cell.

• 标志酶： 检测细胞器制剂纯度的便利方法是不同的亚细胞分级中测定标志酶的活性。标志酶是只存在于细胞某一特定区室中的酶。