Electron Transport Chain

Electron transport chain

electrons (from NADH and FADH2) are transferred through complexes to produce O2 —> the O2 is used by oxidative phosphorylation to produce ATP

oxidation

gains O2

loses electron

loses H+

this is the reducing agent

reduction

loses O2

gains electron

gains H+

this is the oxidizing agent

how to calculate G’0

n= # of electrons transferred

F= 23.06

coenzyme Q (ubiquinone)

mobile carrier for electrons

located in IMM

carries 2 electrons

cytochrome c

mobile carrier for electrons

carries one electron

peripheral protein on outer leaflet of IMM

NADH-Q oxidoreductase (complex I)

succinate-Q reductase (complex II)

Q-cytochrome c oxidoreductase (complex III)