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Coupled reaction

coupled reaction

chemical reaction with a common intermediate in which energy is transferred from one side of the reaction to the other. An example is the formation of atp, whichis an endergonic process and is coupled to the dissipation of a proton gradient.

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Re: Why is ATP rather than GTP, CTP or TTP the energy currency?

The term`Energy Currency`is not accurate one . Because certain energy reactions ATP is NOT preferred as a valid so called `currency`. Evolution ... concern for error in 3 dimensional structure of the protein .. GTP is coupled to conformational changes of translational machinery. GTP important ...

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by metingun2
Sun Oct 06, 2013 11:53 am
Forum: Molecular Biology
Topic: Why is ATP rather than GTP, CTP or TTP the energy currency?
Replies: 6
Views: 9538

Spectrophotometry - why can't some products be read?

Hi folks, I'm reading about this coupled reaction between hexokinase/glucose-6-phosphate dehydrogenase in regards to spectrophotometry. The reaction ...

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by keetner
Thu Nov 01, 2012 5:16 am
Forum: Molecular Biology
Topic: Spectrophotometry - why can't some products be read?
Replies: 2
Views: 3502

Please help!

... acid has 6 hydrogen atoms. 3) Yes, oxidative phosphorylation, after a coupled reaction with Coenzyme Q to QH2 with the enzyme succinate dehydrogenase.

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by billyfisher100
Sat Jan 21, 2012 1:13 pm
Forum: Cell Biology
Topic: Please help!
Replies: 10
Views: 7363

Re: TCA inhibitor

... malonate. Now, the isomerisation action of succinate dehydrogenase is coupled with a Coenzyme 6Q - 6QH2 synthesis reaction at site II of the electron transport chain (on the succinate area, not the reduced ...

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by billyfisher100
Fri Jan 20, 2012 1:21 am
Forum: Cell Biology
Topic: TCA inhibitor
Replies: 3
Views: 8072

Re: Theories - Origin of Life

... It can be driven only by an external source of free energy that is coupled to the organic system. Page 60 In water, the assembly of nucleosides ... amino acids do not spontaneously join in water. Rather, the opposite reaction is thermodynamically favored at any plausible concentrations: polypeptide ...

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by scottie
Fri Aug 19, 2011 12:31 pm
Forum: Evolution
Topic: Theories - Origin of Life
Replies: 563
Views: 1127894
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