rp Gy229 G|u271 Ala 275 Asp 282 Val 345 The above chain of ten water molecules, linking the end of one a-helix to the middle of another is found from the X-ray diffraction data of glucoamylase-471(葡萄糖淀粉酶), The water network links secondary structures within the proteinThe above chain of ten water molecules, linking the end of one a-helix to the middle of another is found from the X-ray diffraction data of glucoamylase-471(葡萄糖淀粉酶), The water network links secondary structures within the protein