Oxidating phosphorylation

Posted by / 17-Jul-2016 01:16

Oxidating phosphorylation

is produced; it is these reducing agents that dramatically increase the amount of ATP produced. As discussed in an earlier section about coupling reactions, ATP is used as free-energy currency by coupling its (spontaneous) dephosphorylation (Equation 3) with a (nonspontaneous) biochemical reaction to give a net release of free energy ( a net spontaneous reaction).

All of these activities are based upon chemical reactions.The nonspontaneous reaction of joining ADP to inorganic phosphate to make ATP (Equation 8, below, and Figure 2, above) is coupled to the oxidation reaction of NADH or FADHG required for the formation of ATP from ADP and phosphate.This set of coupled reactions is so important that it has been given a special name: oxidative phosphorylation.The process that accounts for the high ATP yield is known as oxidative phosphorylation.A quick examination of Equations 5-7 shows that glycolysis and the citric-acid cycle generate other products besides ATP and GTP, namely This flowchart shows the major steps involved in breaking down glucose from the diet and converting its chemical energy to the chemical energy in the phosphate bonds of ATP, in aerobic (oxygen-using) organisms.

oxidating phosphorylation-47oxidating phosphorylation-42oxidating phosphorylation-51

The body utilizes energy from other nutrients in the diet to produce ATP through oxidation-reduction reactions (Figure 3).