Chapter 10 - Chapter 10 Wednesday 11:33 AM Audio Recording...

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Audio Recording Audio recording started: 11:33 AM Wednesday, October 13, 2010 Enzyme regulation The activity of enzymes must be frequently regulated so that they function at the proper place and time Allosteric control Multiple forms of enzymes (isozymes/isoenzymes) Reversible covalent modification Proteolytic activation Controlling the amount of enzyme Five regulatory stratergies of enzymes Regulation involves the binding of a non-substrate molecule (allosteric effector), at sites other than the active site Allosteric or regulatory site is the site oat which a small regulatory molecule interacts with an enzyme to inhibit or activate that enzyme Allosteric effectors have multiple catalytic and binding sites Aspartrae transcarbamoylase ATCase) catalyzes the 1st step in pyrimidine biosynthesis Allosteric effectors is structurally different from the substrates of reaction. Inhibit or enhance the catalysis of a reaction
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Chapter 10 - Chapter 10 Wednesday 11:33 AM Audio Recording...

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