BSC 1010 Lecture 6: Chapter 6 Notes

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Biological Science
BSC 1010
John Geiger

A substance that binds to an enzyme and decreases its activity is called Inhibitor The end product of a biochemical pathway acts as an inhibitor of an early reaction in the pathway, a process called Feedback Inhibition Competes with the substrate for the same active site, occupying the active site and thus preventing substrates from binding Competitive Inhibition Bind to the enzyme in a location other than the active site changing the shape of the enzyme and making it unable to bind to the substrate Noncompetitive Inhibition Many enzymes that exist in either an active or inactive conformation are called allosteric enzymes A substance that binds to an allosteric site and reduces enzyme activity is called allosteric inhibition binds to allosteric sites to keep an enzyme in its active configuration thereby increasing enzyme activity Allosteric activator INORGANIC enzyme function is often assisted by additional chemical components known as.... Can be metal ions that are often found in the active site participating directly in catalysis Cofactors When the cofactor is a nonprotein ORGANIC molecule it is called......... They shuttle energy in the form of hydrogen atoms from one enzyme to another in a cell. Often serve as electron acceptors. Coenzyme The total of all chemical reactions carried out by an organism is called Metabolism Chemical reactions that expend energy to build up molecul
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