Electron transport
STANDARD REDUCTION POTENTIALS
OF THE MAJOR RESPIRATORY
ELECTRON CARRIERS.
Complex I

NADH + H+
NAD+

FMN
FMNH2

Fe2+S
Fe3+S

CoQ
CoQH2
Complex II
Succinate
Fumarate

FAD
FADH2

Fe2+S
Fe3+S

CoQ
CoQH2
Q-CYCLE
UQ

UQ.-

UQH2
First half of Q cycle
Complex III

CoQH2
CoQ

cyt b ox
cyt b red

Fe2+S
Fe3+S

cyt c1 ox
cyt c1 red

cyt c red
cyt c ox
Complex IV
cyt c red
cyt c ox

cyt a ox
cyt a red

cyt a3 red
cyt a3 ox

O2
2 H2O
GLYCEROL PHOSPHATE
SHUTTLE
malate/aspartate shuttle system
ELECTRON TRANSPORT IS
COUPLED TO OXIDATIVE
PHOSPHORYLATION
Electron transport chain
Electron transport chain
Electron transport chain
Electron transport chain
Electron transport chain
Electron transport chain
Electron transport chain
Electron transport chain
Electron transport chain
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Electron transport chain

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Electron transport chain

  1. 1. Electron transport
  2. 2. STANDARD REDUCTION POTENTIALS OF THE MAJOR RESPIRATORY ELECTRON CARRIERS.
  3. 3. Complex I NADH + H+ NAD+ FMN FMNH2 Fe2+S Fe3+S CoQ CoQH2
  4. 4. Complex II Succinate Fumarate FAD FADH2 Fe2+S Fe3+S CoQ CoQH2
  5. 5. Q-CYCLE UQ UQ.- UQH2
  6. 6. First half of Q cycle
  7. 7. Complex III CoQH2 CoQ cyt b ox cyt b red Fe2+S Fe3+S cyt c1 ox cyt c1 red cyt c red cyt c ox
  8. 8. Complex IV cyt c red cyt c ox cyt a ox cyt a red cyt a3 red cyt a3 ox O2 2 H2O
  9. 9. GLYCEROL PHOSPHATE SHUTTLE
  10. 10. malate/aspartate shuttle system
  11. 11. ELECTRON TRANSPORT IS COUPLED TO OXIDATIVE PHOSPHORYLATION

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