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feedback inhibition

 
Dictionary: feedback inhibition
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n.
A cellular control mechanism in which an enzyme that catalyzes the production of a particular substance in the cell is inhibited when that substance has accumulated to a certain level, thereby balancing the amount provided with the amount needed.


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Britannica Concise Encyclopedia: feedback inhibition
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Suppression of the activity of an enzyme by a product of the sequence of reactions in which the enzyme is participating. When the product accumulates in a cell beyond an optimal amount, it decreases its own production by inhibiting an enzyme involved in its synthesis. After the product has been used or broken down, inhibition is relaxed and formation of the product resumes. Enzymes whose ability to catalyze a reaction depends on molecules other than the substances on which they act directly are said to be under allosteric control.

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Sports Science and Medicine: feedback mechanism
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Home > Library > Health > Sports Science and Medicine

Mechanism by which the products or outcomes of a process are coupled to the input. Feedback mechanisms are important in regulating many physiological processes. See also negative feedback, positive feedback.

Medical Dictionary: feedback inhibition
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Home > Library > Health > Medical Dictionary

n.

An inhibition of activity due to the production of an end product of the action. Also called feedback mechanism.

 
 

 

Copyrights:

Dictionary. The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.  Read more
Britannica Concise Encyclopedia. Britannica Concise Encyclopedia. © 2006 Encyclopædia Britannica, Inc. All rights reserved.  Read more
Sports Science and Medicine. The Oxford Dictionary of Sports Science & Medicine. Copyright © Michael Kent 1998, 2006, 2007. All rights reserved.  Read more
Medical Dictionary. The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company.  Read more