It also serves as another coenzyme as NADH. Electron transport chain is shown in figure 1. Figure 1: Electron Transport Chain. Since NADH serves as an electron and hydrogen donor, it donates its electrons to the membrane proteins of the inner mitochondrial membrane. These electrons are used in the production of ATP via oxidative phosphorylation. NADP is a coenzyme involved in oxidation-reduction reactions of photosynthesis.
It is mainly used in anabolic reactions such as nucleic acid and lipid synthesis. It is capable of donating hydrogen and electrons to a chemical reaction. Its reduction power is used in the Calvin cycle, assimilating carbon dioxide. It works as a reducing agent in lipid and nucleic acid synthesis.
They play a vital role in enzyme-catalyzed metabolic reactions as electron carriers. Overview and Key Difference 2. What is NADH 4. It has a Vitamin B backbone. Therefore, it is a water-soluble compound. As it is positively charged, it can act as an oxidizing agent. It oxidizes other compounds and converts to its reduced form which is NADH.
Also, synthesis also takes place through modification of niacin which is taken from the diet. It is also a coenzyme. It works as a reducing agent and oxidizes itself while reducing the other compound. Hence, NADH is useful in many catabolic reactions as an electron carrier.
Furthermore, NADH acts as a coenzyme in the citric acid cycle. NADH also acts as a co-factor for many enzymes such as alcohol dehydrogenase, etc. Additionally, NADH has a hepatoprotective activity and plays a role in lowering cholesterol and blood pressure. Thus, same starting compounds; aspartate and tryptophan involve in the synthesis of NADH.
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