In this article we will discuss about the pentose phosphates cycle, explained with the help of suitable diagrams. This series of reactions enables the cells to metabolize glucose-6-℗ without using the glycolytic pathways; it is therefore also called "hexosemonophosphate shunt", or "phosphogluconate pathway" (after the name of one of the intermediates of the cycle), or "Dickens-Horecker pathway" (in view of [...]
The following points highlight the eight main glycolytic reactions. The reactions are: 1. Phosphohexose Isomerase 2. Phosphofructokinase 3. Aldolase or Fructose-Bisphosphate Aldolase 4. Glyceraldehyde-3-℗ Dehydrogenase 5. 3-Phosphoglycerate Kinase 6. Phosphoglycerate Mutase 7. Enolase 8. Pyruvate Kinase. Reaction # 1. Phosphohexose Isomerase: This enzyme isomerizes glucose-6-℗ (resulting, via glucose-1-℗, from phos-phorolysis of the reserve glycogen or from the phosphorylation of glucose [...]
In this article we will discuss about the oxidative decarboxylation of pyruvic acid. We know that anaerobiosis the pyruvic acid formed during glycolysis reacts with NADH which accumulates to give lactic acid (or ethanol) and thus permits the regeneration of NAD+. But when oxygen is available, NADH is reoxidized thanks to the electrons carrier system, and the pyruvic acid is [...]