标记酶，是指生物膜含有的唯一定位在某种膜上的酶。在亚细胞级分分离、纯化过程中，可通过检测标记酶来进行追踪、鉴定。

举例

细胞膜：5′-核苷酸酶，腺苷酸环化酶，钠钾ATP酶

内质网：

糙面内质网：葡萄糖-6-磷酸酶

光面内质网：细胞色素P450氧化酶

高尔基体：半乳糖苷转移酶

外膜：单胺氧化酶

膜间隙：腺苷酸激酶

内膜：细胞色素氧化酶

基质：苹果酸脱氢酶

溶酶体：酸性磷酸酶和胞苷酸酶

过氧化物酶体：过氧化氢酶

Molecular formula :

CAS :

nature : biofilm contains many proteins and enzymes, some of which - the only location in some membrane, known as marker enzyme. The subcellular fractions separation, purification process, could be detected by enzyme markers for tracking and identification. Several Asian marker of cell enzyme is as follows : the plasma membrane, 5'-nucleotidase enzyme adenylate cyclase, Na-K-ATPase; Endoplasmic reticulum, glucose-6-phosphatase; Golgi apparatus, galactosidase transferase; Endometrial mitochondrial ATP synthase.