**3. Interaction between pancreatic α-amylase and binding glycoproteins in small intestinal BBM**

First, effects of pancreatic α-amylase on the activities of glycoproteins in Group 1 were investigated. Group 1 consists of SI and SGLT1. SI, a membrane glycoprotein, digests sucrose, isomaltose, and maltose on the membrane as α-glucosidases. SGLT1 is also a membrane glycoprotein and plays an essential role in glucose absorption in the small intestine.
