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Half-Reaction go' (V) 10, + 2H+ + 2 e = H,0 0.815 NO, + 2 H* + 2 e = NO, + H,0 Cytochrome a, (Fet) + e= cytochrome a, (Fe?+) O, + 2H+ + 2 e=H,0, 0.42 0.385 0.295 Cytochrome a (Fe* ) +e= cytochrome a (Fe2+) 0.29 Cytochrome c (Fe+) + e = cytochrome c (Fe?+) Cytochrome c, (Fe+) + e = cytochrome c, (Fe2+) Cytochrome b (Fe*) +e= cytochrome b (Fe2+ )(mitochondrial) 0.235 0.22 0.077 Ubiquinone + 2H* + 2e = ubiquinol 0.045 Fumarate + 2 H* + 2e = succinate 0.031 FAD + 2 H* + 2e=FADH, (in flavoproteins) -0.040 Oxaloacetate + 2 H+ + 2 e = malate -0.166 Pyruvate + 2 H+ + 2 e = lactate -0.185 Acetaldehyde + 2 H+ + 2 e = ethanol -0.197 FAD + 2 H* + 2 e = FADH, (free coenzyme) -0.219 S + 2H+ + 2 e =H,S -0.23 Lipoic acid + 2 H* + 2e= dihydrolipoic acid -0.29 NAD+ + H+ + 2e = NADH -0.315 NADP+ + H+ + 2e = NADPH -0.320 Cysteine disulfide + 2H+ + 2 e =2 cysteine -0.340 Acetoacetate + 2 H* + 2 e = B-hydroxybutyrate -0.346 H+ + e =H, -0.421 So- + 2 H+ + 2 e = SO + H,0 -0.515 Acetate + 3 H* + 2e = acetaldehyde + H,0 -0.581

Half-Reaction go' (V) 10, + 2H+ + 2 e = H,0 0.815 NO, + 2 H* + 2 e = NO, + H,0 Cytochrome a, (Fet) + e= cytochrome a, (Fe?+) O, + 2H+ + 2 e=H,0, 0.42 0.385 0.295 Cytochrome a (Fe* ) +e= cytochrome a (Fe2+) 0.29 Cytochrome c (Fe+) + e = cytochrome c (Fe?+) Cytochrome c, (Fe+) + e = cytochrome c, (Fe2+) Cytochrome b (Fe*) +e= cytochrome b (Fe2+ )(mitochondrial) 0.235 0.22 0.077 Ubiquinone + 2H* + 2e = ubiquinol 0.045 Fumarate + 2 H* + 2e = succinate 0.031 FAD + 2 H* + 2e=FADH, (in flavoproteins) -0.040 Oxaloacetate + 2 H+ + 2 e = malate -0.166 Pyruvate + 2 H+ + 2 e = lactate -0.185 Acetaldehyde + 2 H+ + 2 e = ethanol -0.197 FAD + 2 H* + 2 e = FADH, (free coenzyme) -0.219 S + 2H+ + 2 e =H,S -0.23 Lipoic acid + 2 H* + 2e= dihydrolipoic acid -0.29 NAD+ + H+ + 2e = NADH -0.315 NADP+ + H+ + 2e = NADPH -0.320 Cysteine disulfide + 2H+ + 2 e =2 cysteine -0.340 Acetoacetate + 2 H* + 2 e = B-hydroxybutyrate -0.346 H+ + e =H, -0.421 So- + 2 H+ + 2 e = SO + H,0 -0.515 Acetate + 3 H* + 2e = acetaldehyde + H,0 -0.581

Biochemistry
Biochemistry
9th Edition
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
Section: Chapter Questions
Problem 1P
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Refer to Table to explain why FAD rather than NAD+ is used in the succinate dehydrogenase reaction.

Half-Reaction go' (V) 10, + 2H+ + 2 e = H,0 0.815 NO, + 2 H* + 2 e = NO, + H,0 Cytochrome a, (Fet) + e= cytochrome a, (Fe?+) O, + 2H+ + 2 e=H,0, 0.42 0.385 0.295 Cytochrome a (Fe* ) +e= cytochrome a (Fe2+) 0.29 Cytochrome c (Fe+) + e = cytochrome c (Fe?+) Cytochrome c, (Fe+) + e = cytochrome c, (Fe2+) Cytochrome b (Fe*) +e= cytochrome b (Fe2+ )(mitochondrial) 0.235 0.22 0.077 Ubiquinone + 2H* + 2e = ubiquinol 0.045 Fumarate + 2 H* + 2e = succinate 0.031 FAD + 2 H* + 2e=FADH, (in flavoproteins) -0.040 Oxaloacetate + 2 H+ + 2 e = malate -0.166 Pyruvate + 2 H+ + 2 e = lactate -0.185 Acetaldehyde + 2 H+ + 2 e = ethanol -0.197 FAD + 2 H* + 2 e = FADH, (free coenzyme) -0.219 S + 2H+ + 2 e =H,S -0.23 Lipoic acid + 2 H* + 2e= dihydrolipoic acid -0.29 NAD+ + H+ + 2e = NADH -0.315 NADP+ + H+ + 2e = NADPH -0.320 Cysteine disulfide + 2H+ + 2 e =2 cysteine -0.340 Acetoacetate + 2 H* + 2 e = B-hydroxybutyrate -0.346 H+ + e =H, -0.421 So- + 2 H+ + 2 e = SO + H,0 -0.515 Acetate + 3 H* + 2e = acetaldehyde + H,0 -0.581
Transcribed Image Text:Half-Reaction go' (V) 10, + 2H+ + 2 e = H,0 0.815 NO, + 2 H* + 2 e = NO, + H,0 Cytochrome a, (Fet) + e= cytochrome a, (Fe?+) O, + 2H+ + 2 e=H,0, 0.42 0.385 0.295 Cytochrome a (Fe* ) +e= cytochrome a (Fe2+) 0.29 Cytochrome c (Fe+) + e = cytochrome c (Fe?+) Cytochrome c, (Fe+) + e = cytochrome c, (Fe2+) Cytochrome b (Fe*) +e= cytochrome b (Fe2+ )(mitochondrial) 0.235 0.22 0.077 Ubiquinone + 2H* + 2e = ubiquinol 0.045 Fumarate + 2 H* + 2e = succinate 0.031 FAD + 2 H* + 2e=FADH, (in flavoproteins) -0.040 Oxaloacetate + 2 H+ + 2 e = malate -0.166 Pyruvate + 2 H+ + 2 e = lactate -0.185 Acetaldehyde + 2 H+ + 2 e = ethanol -0.197 FAD + 2 H* + 2 e = FADH, (free coenzyme) -0.219 S + 2H+ + 2 e =H,S -0.23 Lipoic acid + 2 H* + 2e= dihydrolipoic acid -0.29 NAD+ + H+ + 2e = NADH -0.315 NADP+ + H+ + 2e = NADPH -0.320 Cysteine disulfide + 2H+ + 2 e =2 cysteine -0.340 Acetoacetate + 2 H* + 2 e = B-hydroxybutyrate -0.346 H+ + e =H, -0.421 So- + 2 H+ + 2 e = SO + H,0 -0.515 Acetate + 3 H* + 2e = acetaldehyde + H,0 -0.581
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