Under anaerobic conditions E. coli can use Nitrate (NO3) as an electron acceptor in a pathway to produce ATP using menaquinone, which is simpler than the redox loop in Complex III that you have studied. Below is a diagram of this system. HCOOH Outside Cell Inside Cell Menaquinone (MQ) 2 1 CO₂ + 3 8 offt NO3 6 4 NO₂ + H₂O Menaquinol (MQH,) ADP + Pi ATPase 4 ATP CH₂ of m OH +4
Under anaerobic conditions E. coli can use Nitrate (NO3) as an electron acceptor in a pathway to produce ATP using menaquinone, which is simpler than the redox loop in Complex III that you have studied. Below is a diagram of this system. HCOOH Outside Cell Inside Cell Menaquinone (MQ) 2 1 CO₂ + 3 8 offt NO3 6 4 NO₂ + H₂O Menaquinol (MQH,) ADP + Pi ATPase 4 ATP CH₂ of m OH +4
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
Related questions
Question
Use the multiple choice questions to identify what components of the redox loop would have to be in each numbered box for this organism to be able to produce ATP using this system. Do not worry about stoichiometry.
a) What should be in box 1?
- MQ
- MQH2
- Electron
- H+
b) What should be in box 2?
- MQ
- MQH2
- Electron
- H+
c) What should be in box 3?
- MQ
- MQH2
- Electron
- H+
d) What should be in box 4?
- MQ
- MQH2
- Electron
- H+
e) What should be in box 5?
- MQ
- MQH2
- Electron
- H+
f) What should be in box 6?
- MQ
- MQH2
- Electron
- H+
g) What should be in box 7?
- MQ
- MQH2
- Electron
- H+
h) What should be in box 8?
- MQ
- MQH2
- Electron
- H+
i) Which boxes in the diagram directly result in increasing the pH gradient? (select all that apply)
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
Transcribed Image Text:Under anaerobic conditions E. coli can use Nitrate (NO3) as an electron acceptor in a pathway to
produce ATP using menaquinone, which is simpler than the redox loop in Complex III that you have
studied. Below is a diagram of this system.
HCOOH CO₂+ 3
Outside Cell
Inside Cell
Menaquinone (MQ)
2
1
7
ofte
CH₂
NO3
+
6
4
NO₂
+
H₂O
Menaquinol (MQH2)
ADP
+ Pi
ATPase
OH
E
OH
CH3
4
ATP
H
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