What substrate breaks down maltose?
Maltase breaks down maltose into glucose. Other disaccharides, such as sucrose and lactose are broken down by sucrase and lactase, respectively.
What is the only substrate that maltase can react with?
The active site of an enzyme is complementary (meaning, it fits perfectly) to a substrate (in this can the substrate being maltose). Once the maltose and maltase combine to form the enzyme-substrate complex, the reaction can happen.
How does the maltase enzyme interact with the substrate?
The substance acted on by an enzyme is its substrate. Amylase can catalyze the digestion of starch into the small disaccharides called maltose, but the enzyme maltase is required to break maltose into its two glucose components. The glucose can then be absorbed by the lining of the intestine and enter the blood stream.
Why does maltase only break down maltose?
Enzymes are proteins with specific tertiary structures. Part of this structure forms an active site. Only the substrate of an enzyme, in this case Maltose, fits/ binds to the active site.
What does the enzyme maltase do?
maltase, enzyme that catalyzes the hydrolysis of the disaccharide maltose to the simple sugar glucose. The enzyme is found in plants, bacteria, and yeast; in humans and other vertebrates it is thought to be synthesized by cells of the mucous membrane lining the intestinal wall.
How many amino acids are in maltase?
Human MGAM and SI each have two subunits with five distinct protein domains: an N-terminal cytoplasmic tail domain (26 amino acids), a transmembrane domain (anchoring domain, 21 amino acids), an O-glycosylated stalk domain (52 amino acids), and two similar catalytic domains (MGAM N-terminal subunit, NtMGAM; MGAM C- …
Why is maltose hydrolysed by maltase?
Explain why maltase catalyses only this reaction. The enzyme maltose will always fold into in a tertiary structure, which results in the active site being in a specific shape that only the substrate maltase can bind to.
What type of enzyme is maltase in the ileum?
Maltase is part of a group of intestinal enzymes called FamilyGH13 (Glycoside hydrolase family 13) that are responsible for breaking apart the α-glucosidase linkages of complex carbohydrates into simple to use glucose molecules.
How does maltase bind to maltose?
Maltase, enzyme that catalyzes the hydrolysis of the disaccharide maltose to the simple sugar glucose. During digestion, starch is partially transformed into maltose by the pancreatic or salivary enzymes called amylases; maltase secreted by the intestine then converts maltose into glucose. …
