Hooper N M, Turner A J
Department of Biochemistry, University of Leeds, U.K.
Biochem J. 1988 Mar 15;250(3):865-9. doi: 10.1042/bj2500865.
The pattern of solubilization of nine kidney microvillar ectoenzymes by a range of detergents distinguished two classes of membrane proteins: those released from the membrane by bacterial phosphatidylinositol-specific phospholipase C and those not so released. The latter group of transmembrane proteins were solubilized efficiently (greater than 80%) by all the detergents examined. In contrast, proteins released by phosphatidylinositol-specific phospholipase C were solubilized effectively only by octyl glucoside, 3-[(3-cholamidopropyl)dimethylammonio]-1-propanesulphonate and sodium deoxycholate. Octyl glucoside solubilized the amphipathic forms of the ectoenzymes examined, suggesting that this may be a useful detergent in the purification of glycosyl-phosphatidylinositol-anchored ectoenzymes.
一类是通过细菌磷脂酰肌醇特异性磷脂酶C从膜上释放出来的,另一类则不是。后一组跨膜蛋白能被所有检测的去污剂有效增溶(大于80%)。相比之下,由磷脂酰肌醇特异性磷脂酶C释放的蛋白仅能被辛基葡糖苷、3-[(3-胆酰胺丙基)二甲基铵]-1-丙烷磺酸盐和脱氧胆酸钠有效增溶。辛基葡糖苷增溶了所检测外切酶的两亲形式,这表明它可能是纯化糖基磷脂酰肌醇锚定外切酶的一种有用去污剂。