Using the information provided, calculate the delta G knot prime and the Keq value at 298K for the oxidation of glutamate catalyzed by glutamate dehydrogenase. (Constants: R=8.3J/degree.mol, F=96.1kJ/V.mol) How to identify the final and initial reactions in a group of redox reactions and do we reverse the reduction reaction if the question asks for oxidation?

Biochemistry
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Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
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Chapter1: Biochemistry: An Evolving Science
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1. The enzyme glutamate dehydrogenase is important in the breakdown of amino acids to produce NH4+. High levels of NH4+ in the body are toxic, and for this reason it is used to form urea to be excreted in the urine.

Using the information provided, calculate the delta G knot prime and the Keq value at 298K for the oxidation of glutamate catalyzed by glutamate dehydrogenase. (Constants: R=8.3J/degree.mol, F=96.1kJ/V.mol)

How to identify the final and initial reactions in a group of redox reactions and do we reverse the reduction reaction if the question asks for oxidation?
ubiquinone +2H+ +2e-
a-Ketoglutarate +NH4+ +2H+ +2e-
NAD+ +2H+ +2e-
a-Ketoglutarate +CO₂ +2H+ +2e-
→ ubiquinol
EO'=+0.045 V
→Glutamate + H₂0 Eº'= -0.140 V
→NADH+H+
EO'= -0.320 V
isocitrate
EO'= -0.380 V
Transcribed Image Text:ubiquinone +2H+ +2e- a-Ketoglutarate +NH4+ +2H+ +2e- NAD+ +2H+ +2e- a-Ketoglutarate +CO₂ +2H+ +2e- → ubiquinol EO'=+0.045 V →Glutamate + H₂0 Eº'= -0.140 V →NADH+H+ EO'= -0.320 V isocitrate EO'= -0.380 V
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