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Dictionary » A » Allosteric Enzyme

Allosteric Enzyme

An enzyme that can be in two states, active and inactive, in the first instance, the process is relatively normal, where the enzyme binds to its binding Site and carries out its reaction. In the second instance, the enzyme is unable to attach itself to the binding Site. This is due to a modulator molecule which alters the shape of the binding Site, making it inactive.allosteric enzyme

(Science: biochemistry, chemistry) a regulatory enzyme whose activity is modified by the noncovalent binding of a particular metabolite at a site (the allosteric site) other than the active site.


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Aminophosphonic Analogues and Herbicides

... They compete with normal substrates at the active site, denaturing the enzyme, and making it useless for its original purpose. So here lies my second ... that is non-competitive to do this same thing OR are there even allosteric sites on such enzymes? Many thanks............... (And I realized ...

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by plasmodesmata11
Tue Jan 20, 2009 12:16 am
 
Forum: Ecology
Topic: Aminophosphonic Analogues and Herbicides
Replies: 1
Views: 775

Noncompetitive inhibition and allosteric inhibition

... non-competitive, mixed-competitive are all kinetic behaviors. An allosteric site is a binding site distinct from the substrate binding or ... is that it reduces the active concentration of enzyme without changing the affinity of the enzyme toward substrate. But ...

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by blcr11
Thu Dec 25, 2008 12:17 pm
 
Forum: Molecular Biology
Topic: Noncompetitive inhibition and allosteric inhibition
Replies: 2
Views: 2022

Noncompetitive inhibition and allosteric inhibition

... up soon. What's the difference between noncompetitive inhibition and allosteric inhibition????????? The progress I made on this problem: In Deborah Goldberg's AP Biology , "In noncompetitive inhibition, the enzyme contains more than one active site and the substrates do not resemble ...

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by thewax
Wed Dec 24, 2008 11:14 pm
 
Forum: Molecular Biology
Topic: Noncompetitive inhibition and allosteric inhibition
Replies: 2
Views: 2022

Positive & Negative Feedback

allosteric feedback? I think that just means that the feedback - either positive or negative - is exerted through allosteric regulation of an enzyme.

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by MrMistery
Wed Jul 02, 2008 5:47 pm
 
Forum: General Discussion
Topic: Positive & Negative Feedback
Replies: 6
Views: 13009

Enzymes

Digestion relies on enzymes. There are carbohydrase enzymes, lipidase enzymes, and protein digesting enzymes ... the stomach of the food. "Pepsin" I believe the enzyme is called. It's an allosteric enzyme.

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by Oscerot
Mon Dec 18, 2006 12:06 am
 
Forum: Cell Biology
Topic: Enzymes
Replies: 21
Views: 1688
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