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Enzyme activation

Enzyme activation

conversion of an inactive form of an enzyme to one possessing metabolic activity. It includes 1) activation by ions (activators); 2) activation by cofactors (coenzymes); and 3) conversion of an enzyme precursor (proenzyme or zymogen) to an active enzyme.


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Re: Enzymes and activation energy.

From Wikipedia on Enzymes: The mechanism of enzyme catalysis is similar in principle to other types of chemical catalysis. By ... to reach the highest energy transition state of the reaction. The reduction of activation energy (ΔG) increases the number of reactant molecules with enough energy ...

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by kolean
Wed Jul 08, 2009 5:04 pm
 
Forum: Molecular Biology
Topic: Enzymes and activation energy.
Replies: 4
Views: 383

Re: Enzymes and activation energy.

... reaction time". An increased rate means a decreased time. 2. In your first section, you comment on the three dimensional shape of the enzyme (I assume you specifically mean its active site). It is more than just shape that is of concern here, it is the electrostatic topology of the ...

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by jonmoulton
Wed Jul 08, 2009 3:25 pm
 
Forum: Molecular Biology
Topic: Enzymes and activation energy.
Replies: 4
Views: 383

Enzymes and activation energy.

Hello Biologists, Q: Enzymes greatly decrease the activation energy. Explain two of the way they do this and be specific in terms ... the activation energy in 2 distinct ways: i. Lowering required energy: An enzyme’s selective three dimensional shape, brings the reactants (or substrates) ...

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by NewtoBiology
Wed Jul 08, 2009 2:09 am
 
Forum: Molecular Biology
Topic: Enzymes and activation energy.
Replies: 4
Views: 383

Re: What exactly does the term 'Induced Fit' mean?

It suggests that the enzyme is not rigid and that it actually changes its shape slightly to fit the profile ... on the substrate molecule. The strain distorts a particular bond and lowers the activation energy needed to break the bond. It explains how molecules can affect enzyme ...

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by Daniel01
Wed Jan 21, 2009 9:05 pm
 
Forum: Cell Biology
Topic: What exactly does the term 'Induced Fit' mean?
Replies: 1
Views: 488

Re: Do you have any of the answers to these questions?

... an ATP molecule, a. a substatial amount of energy is released b. an enzyme is formed c. energy is stored d. activation energy is released its actually A 38. Because of photosynthesis, a. the atmosphere ...

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by dvwaites
Fri Nov 07, 2008 5:19 am
 
Forum: Cell Biology
Topic: Do you have any of the answers to these questions?
Replies: 3
Views: 451
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