BIOCH 200 Oxidative Phosphorylation (March 26, 2014)
• *The Electron Path down the ETC (electron transport chain) for NADH and
FADH .2Best way to describe this is through the diagrams provided.
o Q = coenzyme Q
o “cyt C” = cytochrome C
• Oxygen has a very high reduction potential which means that it has a high affinity
for electrons that is why it is the terminal electron carrier
o *The order at which electrons move through the ETC is also indicative of
the reducing potential of each checkpoint.
Ex. complex I has the lowest reducing potential of the 4.
• *Each NADH that interacts with the ETC will result in the pumping of 10 protons
from the matrix to the intermembrane space
• *Each FADH th2t interacts with the ETC will result in the