BIOL 2100 Lecture Notes - Lecture 11: Acetyl Group, Enzyme, Phosphofructokinase
Document Summary
One carbon from pyruvate is fully oxidated and leaves as carbon dioxide. What is left is a 2c molecule which is called an acetyl group. Acetyl group is attached to coenzyme a, which is required for the next reaction. Conenzyme a accepts the acetyl group and puts it into another reaction in the krebs cycle. Electron transport chain carries out a series of redox reactions. Oxidizing potential increases along the electron transport chain. Electrons lose free energy as they move along the electron transport chain. Coupled with the movement of electrons is the movement of protons against the concentration gradient/ across the membrane (called a proton motif force). Creates a force that can be used to synthesize atp. Atp synthase functions as a turbine; this is where protons flow against a concentration gradient. Works in both directions, whichever side has the lesser amount of protons is where the atp synthase will channel the protons toward (towards equilibrium)