Reduction potentials of electron carriers

[Hemichordate]

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As you go from one electron carrier to another (cytochromes, FMN, etc.), do the carriers have increasingly greater reduction potential (more positive)?

 

[Hemichordate]

bump

 

[wanderer]

As you go from one electron carrier to another (cytochromes, FMN, etc.), do the carriers have increasingly greater reduction potential (more positive)?

I believe this is correct.

Under standard conditions
(Ignoring the reducing agent)
A + e- ----> A-
nFE = - dG = RT ln K
K = e ^ (nfE/ RT)
The more positive E is the greater K is and the more the reaction lies to the right, meaning that the greater the reduction potential the more it wants to be in the reduced form.

 

[Charles_Carmichael]

Yup, the reduction potentials become more and more positive with oxygen, the final acceptor, having the most positive potential.