Montgomery R K, Sybicki M A, Forcier A G, Grand R J
Biochim Biophys Acta. 1981 Oct 13;661(2):346-9. doi: 10.1016/0005-2744(81)90024-3.
Sucrase-isomaltase immunoprecipitated from brush border of an intestinal transplant lacking pancreatic proteases was found to be a single, high molecular weight protein. Elastase digestion converted this protein into two subunits which co-migrated on electrophoresis with those normally found on the microvillus membrane. The high molecular weight form had full sucrase and isomaltase activities.
从缺乏胰腺蛋白酶的肠道移植组织刷状缘免疫沉淀得到的蔗糖酶-异麦芽糖酶是一种单一的高分子量蛋白质。弹性蛋白酶消化将该蛋白质转化为两个亚基，这两个亚基在电泳中与通常在微绒毛膜上发现的亚基共迁移。高分子量形式具有完整的蔗糖酶和异麦芽糖酶活性。
