Dictionary » E » Electron acceptor

Electron acceptor

Definition

noun

A molecule that receives or accepts electrons from another molecule during a redox reaction.


Supplement

An electron acceptor is an oxidizing agent and is itself reduced during the process of redox reaction.

Examples of acceptors include oxygen, nitrate, iron (III), manganese (IV), sulfate, carbon dioxide, etc.


Synonym: oxidant, oxidizing agent.

See also: redox reaction, electron transport chain.


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ETC - purpose of having different dehydrogenases?

... that NDH-1 is a coupling site (so pumps out protons while transferring electrons) while NDH-2 is not; will not pump out any protons. As a result ... thought e's were just being passed from NADH to the final e' acceptor. Is the benefit of having an NDH-2 to avoid the potential loss of ...

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by keetner
Sat Dec 15, 2012 2:28 am
 
Forum: Molecular Biology
Topic: ETC - purpose of having different dehydrogenases?
Replies: 1
Views: 1683

Re:

... the same direction. The factor that has to be clarified is the outside electron acceptor necessary when talking about respiration. In cells, cellular respiration refers to ...

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by daniel.kurz
Fri Nov 18, 2011 3:07 pm
 
Forum: Cell Biology
Topic: Mitochondrial energy pathways
Replies: 9
Views: 5469

enzyme activity, please help

... the cytkinin oxidase/dehydrogenase may be measured by decoloration of electron acceptor DCPIP ;)

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by JackBean
Thu Nov 18, 2010 6:50 am
 
Forum: Cell Biology
Topic: enzyme activity, please help
Replies: 6
Views: 7533

Biochemistry

I have two true and false questions: 1) Electron from the reductant of a redox couple can transfer exergonically to the oxidized ... I think: At first I thought it is true, because from the equation: delta E = E(acceptor) - E(donar), you will get a positive value. But then... how can you transfer ...

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by Tanpopo
Sun Nov 07, 2010 6:08 am
 
Forum: Cell Biology
Topic: Biochemistry
Replies: 1
Views: 3252

Re: Chloroplast

... redox reagent is standing in for NADPH/NADP+. Normally thylakoid electron transport sets up an H+ gradient that spills back through an ATPase ... increase the rate of hydrogen ion transport if there is enough electron acceptor available to soak up the electrons from the thylakoid electron transport ...

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by jonmoulton
Fri Sep 17, 2010 9:31 pm
 
Forum: Molecular Biology
Topic: Chloroplast
Replies: 2
Views: 3479
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