Biology 1002B Lecture Notes - Lecture 11: Intermembrane Space, Cytochrome C Oxidase, Short Circuit
12 Mar 2012
School
Department
Course
Professor
Document Summary
Respiratory and mitochondrial electron transport take place in the inner mitochondrial membrane. Many proteins come together to produce the complexes found in the intermembrane space: nadh dehydrogenase, cytochrome complex and cytochrome oxidase. The electrons move because the redox components of the respiratory chain are organized from negative to positive redox potentials redox potential becomes more positive as you move down. Cofactors bound to proteins (organic molecules) play a role in redox reactions. Oxygen is the terminal electron acceptor, which is why it is needed in the electron transport chain nothing in the chain has a stronger pull for electrons than oxygen. Chemiosmosis linking proton gradient to work. Proton-motive force the stored energy produced through the combination of a concentration gradient and voltage (charge) gradient across the membrane. Electron transport is linked to proton pumping, Protons move back into the matrix through the atp synthase and this makes atp.
