3.2.1.20	1,4-alpha-D-glucooligosaccharide + H2O	short glucose oligomers, substrate derived from starch by alpha-amylase activity, the enzyme is important in mucosal alpha-glucogenesis, MGAM primes and mucosal sucrase-isomaltase activity sustains and constrains prandial alpha-glucogenesis from starch oligomers, regulation mechanism, overview	
3.2.1.20	1,4-alpha-D-glucooligosaccharide + H2O	the four isozymes digest all linear starch oligosaccharides to glucose	
3.2.1.20	4-nitrophenyl D-glucopyranoside + H2O	-	
3.2.1.20	alpha-1,4-glucan + H2O	-	
3.2.1.20	amylopectin + H2O	in starch, preferred substrate	
3.2.1.20	glycogen + H2O	-	
3.2.1.20	malto-oligosaccharides + H2O	-	
3.2.1.20	maltodextrin + H2O	-	
3.2.1.20	maltoheptaose + 6 H2O	-	
3.2.1.20	maltooligosaccharides + H2O	-