- 1. transfer of e- from NADH to FMN
- (results: NADH is oxidized to NAD+ and FMN is reduced to FMNH2)
- 2.FMNH2 passes 2H+ to other side of membrane & passes 2 e- to Q
- (results: FMNH2 is oxidized to FMN & Q picks up additional 2H+ from surroundings and releases it other side of membrane)
3. Q transfers electrons to cytochromes (carrier molecules that are proteins AND an iron group), eventually forming H2
is the final electron acceptor.
4. The extra H+
builds up on one side thus forming an inequality. The extra H then moves thru ATP synthase
(a channel protein).
5. movement of H+
(protons) thru ATP synthase activates this enzyme to combine ADP + P = ATP. This is known as chemoiosmotic theory
(or the proton motive force)