The end product (inhibitor) of a pathway binds to the active site of the first enzyme in the pathway. As a result, the enzyme can no longer bind to the starting substrate of the pathway.

Illustration of Function of Competitive Inhibition of Enzyme Activity.jpg by Gary E. Kaiser, Ph.D.
Professor of Microbiology, The Community College of Baltimore County, Catonsville Campus
This work is licensed under a Creative Commons Attribution 4.0 International License.
Based on a work at https://cwoer.ccbcmd.edu/science/microbiology/index_gos.html.

Last updated: September, 2018
Please send comments and inquiries to Dr. Gary Kaiser