酸性核磷酸蛋白(ANP)32E是含有亮氨酸重复结构的蛋白质,参与广泛的生物学过程,其结构与ANP32A高度相似,通过磷酸化调节胞质运输,并可以抑制蛋白磷酸酶2A(PP2A)的活性.近期临床研究发现ANP32E在鼠纤维肉瘤中起抑癌基因的作用,而在乳腺癌发生中可能与肺转移相关,具体的机制尚未明确.
Acidic leucine-rich nuclear phosphoprotein 32E (ANP32E) belongs to a family of acidic nuclear phosphoprotein 32, and participates in a broad range of biological processes. ANP32E is similar to ANP32A in structure. It has been suggested that the nueleo-cytoplasmic shuttling might be regulated by phosphorylation. ANP32E is able to inhibit the activity of PP2A. Recent findings indicate ANP32E acts as a tumor suppressing gene in mice fibrosarcoma, and is correlated with lung metastasis in the tumorigenesis of breast cancer. But the mechanism is not yet clear.