amylase is a digestive enzyme that breaks down starch into sugars through hydrolyses.
amylase is a digestive enzyme that breaks down starch into sugars through hydrolyses.
amylase is a digestive enzyme that breaks down starch into sugars through?
hydrolyses
amylase () is an enzyme that catalyses the hydrolysis of starch (latin ) into sugars. amylase is present in the saliva of humans and some other mammals, where it begins the chemical process of digestion. foods that contain large amounts of starch but little sugar, such as rice and potatoes, may acquire a slightly sweet taste as they are chewed because amylase degrades some of their starch into sugar. the pancreas and salivary gland make amylase (alpha amylase) to hydrolyse dietary starch into disaccharides and trisaccharides which are converted by other enzymes to glucose to supply the body with energy. plants and some bacteria also produce amylase. as "diastase", amylase was the first enzyme to be discovered and isolated (by anselme payen in 1833). specific amylase proteins are designated by different greek letters. all amylases are glycoside hydrolases and act on α-1,4-glycosidic bonds.
amylase
structural variation can be seen as an avenue of genome modification for adaptation by evolution. a study was conducted on ancestral diet and the evolution of the human amylase gene copy number. the consumption of starch became a huge component of the human diet with the development of agricultural societies. amylase is the enzyme that breaks down starch and its copy number varies. these observations led to the question of whether or not the differences in starch consumption between different populations created natural selection pressures on the enzyme amylase. they tested for the differences in the amylase protein expression in saliva from different populations and compared their expression to their copy number in their respective genomes. then they compared the starch consumption of different populations to their copy number of the amylase gene. they found that there was more amylase protein expression in saliva from people that had higher amylase copy number in their genome and there was also an association between groups of people with high starch diets and a larger amylase gene copy number. this study brought exciting results as structural variation proved an involvement in the evolution of the human population by increasing its amylase copy number over time.
structural variation in the human genome