beta-NADH, Reduced Disodium Salt Nucleotide
beta-NADH, Reduced Disodium Salt (Nicotinamide Adenine Dinucleotide)
95% dertermined by decrease in absorbance at 340 nm on enzymatic oxidation with ADH (Alcohol dehydrogenase,yeast, EC 1.1.1.1., pH 10)
95% dertermined by decrease in absorbance at 340 nm on enzymatic oxidation with ADH (Alcohol dehydrogenase,yeast, EC 1.1.1.1., pH 10)
Unstable in acids, but relatively stable at pH 10-11.
NAD is a coenzyme formed from the nucleotide, nicotinamide, adenosine monophosphateand a phosphate group joining the first two components. NADP has the same structure with the addition of an extra phosphate group to AMP. NAD can be reduced to NADH during coupling with reactions which oxidize various organic substrates. For example, the reaction catalyzed by glyceraldehyde phosphate dehydrogenase during glycolysis. NADH then passes to the inside of mitochondria where it donates the electrons it is carrying to the electron transport chain. In this manner, NAD acts as an intermediate energy storage compound that indirectly generates ATP. Generally, NADP accepts electrons from catabolic reactions to form NADPH. An example is its coupling with the conversion of glucose-6-phosphate to ribose-5-phosphate in the pentose phosphate pathway. NADPH has a slightly different role to NADH in that it does not donate electrons to the electron transport chain. Instead, it tends to reduce intermediates in anabolic pathways e.g. fatty acid synthesis. NAD participates in many redox reactions in cells, including those in glycolysis and most of those in the citric acid cycle of cellular respiration.
Nicotinamide adenine dinucleotide (NAD) and its relative nicotinamide adenine dinucleotide phosphate (NADP) are two of the most important coenzymes in the cell. In cells, most oxidations are accomplished by the removal of hydrogen atoms. Both of these coenzymes play crucial roles in this. Each molecule of NAD+ (or NADP+) can acquire two electrons; that is, be reduced by two electrons. However, only one proton accompanies the reduction. The other proton produced as two hydrogen atoms are removed from the molecule being oxidized is liberated into the surrounding medium.
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Product Notes
The beta-NADH, Reduced Disodium Salt (Catalog #AAA657790) is a Nucleotide and is intended for research purposes only. The product is available for immediate purchase. It is sometimes possible for the material contained within the vial of "beta-NADH, Reduced Disodium Salt, Nucleotide" to become dispersed throughout the inside of the vial, particularly around the seal of said vial, during shipment and storage. We always suggest centrifuging these vials to consolidate all of the liquid away from the lid and to the bottom of the vial prior to opening. Please be advised that certain products may require dry ice for shipping and that, if this is the case, an additional dry ice fee may also be required.Precautions
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