2H+ 2H+ Respiration NADH + H+ FAD Mo5+ NO3 2x Respiration NAD+ FADH2 Mo6+ NO2 H2O FIGURE 13-16 The electrons that reduce nitrate to nitrite are brought to it by a short electron transport chain. FAD and molybdenum are actually bound to the nitrate reductase enzyme, but NADH and NAD+ diffuse between the enzyme and sites of respiration.

Biochemistry
6th Edition
ISBN:9781305577206
Author:Reginald H. Garrett, Charles M. Grisham
Publisher:Reginald H. Garrett, Charles M. Grisham
Chapter17: Metabolism: An Overview
Section: Chapter Questions
Problem 18P
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The electrons that reduce nitrate to nitrite are brought to it by a short electron transport chain involving FADH2 and NADH (see Figure). In which other reactions have you seen these two electron carriers?

2H+
2H+
Respiration
NADH + H+
FAD
Mo5+
NO3
2x
Respiration
NAD+
FADH2
Mo6+
NO2
H2O
FIGURE 13-16 The electrons that reduce nitrate to nitrite are brought to it by a
short electron transport chain. FAD and molybdenum are actually bound to the nitrate
reductase enzyme, but NADH and NAD+ diffuse between the enzyme and sites of
respiration.
Transcribed Image Text:2H+ 2H+ Respiration NADH + H+ FAD Mo5+ NO3 2x Respiration NAD+ FADH2 Mo6+ NO2 H2O FIGURE 13-16 The electrons that reduce nitrate to nitrite are brought to it by a short electron transport chain. FAD and molybdenum are actually bound to the nitrate reductase enzyme, but NADH and NAD+ diffuse between the enzyme and sites of respiration.
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