1 / 5

Allosteric Inhibitors

Allosteric Inhibitors. By Kelsey Martin and Christine Bondira. A noncompetitive inhibitor binds to the enzyme away from the active site, altering the conformation of the enzyme so that its active site no longer functions . Noncompetitive inhibitor. He took my spot!!.

hart
Download Presentation

Allosteric Inhibitors

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Allosteric Inhibitors By Kelsey Martin and Christine Bondira

  2. A noncompetitive inhibitor binds to the enzyme away from the active site, altering the conformation of the enzyme so that its active site no longer functions. Noncompetitive inhibitor He took my spot!! Allosteric Inhibitors- a substrate that binds to a site OTHER than the active site, causing the enzyme to change shape and causing the active site to no longer function as the active site

  3. For Example: • Anti-cancer drugs • Inhibits enzymes • DNA Production and synthesis • Cancer is conquered.

  4. Allosteric activaterstabilizes active from Allosteric enyzmewith four subunits Active site(one of four) Regulatorysite (oneof four) Activator Active form Stabilized active form Allosteric activaterstabilizes active form Oscillation Non-functionalactivesite Inhibitor Stabilized inactiveform Inactive form (a) Allosteric activators and inhibitors. In the cell, activators and inhibitors dissociate when at low concentrations. The enzyme can then oscillate again.

  5. Example in the body: • ATP works as a noncompetitive inhibitor, as it will bind allosterically to catabolic enzymes and lower their affinities for substrate. • ADP works as an activator with the same exact enzymes, causing them to generate more ATP as necessary. In this instance, ATP works as the allosteric inhibitor.

More Related