Chapter 14 (Part 1) Electron transport. Standard reduction potentials of the major respiratory electron carriers.

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Presentation transcript:

Chapter 14 (Part 1) Electron transport

Standard reduction potentials of the major respiratory electron carriers.

Complex I NADH + H + FMN Fe 2+ S CoQ NAD + FMNH 2 Fe 3+ SCoQH 2

Succinate FAD Fe 2+ S CoQ FumarateFADH 2 Fe 3+ SCoQH 2 Complex II

Q- Cycle UQ UQ.- UQH 2

Complex III CoQH 2 cyt b ox Fe 2+ S cyt c 1 ox cyt c red CoQcyt b red Fe 3+ S cyt c 1 red cyt c ox

cyt c red cyt a ox cyt a 3 red O2O2 cyt c ox cyt a red cyt a 3 ox 2 H 2 O Complex IV

Glycerol phosphate shuttle

malate/aspartate shuttle system

Electron transport is coupled to oxidative phosphorylation

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