![]() Allosteric stimulation and inhibition allow production of energy and materials by the cell when they are needed and inhibit production when the supply is adequate.Įnzymes also have valuable industrial and medical applications. Another factor affecting enzyme activity is allosteric control, which can involve stimulation of enzyme action as well as inhibition.Noncompetitive inhibition occurs when an inhibitor binds to the enzyme at a location other than the active site.Competitive inhibition occurs when molecules similar to the substrate molecules bind to the active site and prevent binding of the actual substrate. Inhibition of enzyme activity occurs in different ways.Thus, enzymatic reaction rate is determined by the speed at which the active sites convert substrate to product. The rate of an enzymatic reaction increases with increased substrate concentration, reaching maximum velocity when all active sites of the enzyme molecules are engaged.Enzyme activity is affected by various factors, including substrate concentration and the presence of inhibiting molecules.SpaceNext50 Britannica presents SpaceNext50, From the race to the Moon to space stewardship, we explore a wide range of subjects that feed our curiosity about space!.Learn about the major environmental problems facing our planet and what can be done about them! Saving Earth Britannica Presents Earth’s To-Do List for the 21st Century.Britannica Beyond We’ve created a new place where questions are at the center of learning.100 Women Britannica celebrates the centennial of the Nineteenth Amendment, highlighting suffragists and history-making politicians.COVID-19 Portal While this global health crisis continues to evolve, it can be useful to look to past pandemics to better understand how to respond today. ![]() ![]()
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