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NAD+ in Enzymology: A Cofactor Guide for Laboratory Research

NAD+ sits at the centre of cellular redox chemistry. How laboratories use it as a reagent in enzyme and pathway assays.

5 min read
NAD+ coenzyme molecular structure with enzymology assay equipment in a research laboratory

Nicotinamide adenine dinucleotide exists in oxidised (NAD+) and reduced (NADH) forms and shuttles electrons in hundreds of enzymatic reactions. As a reagent it is essential to dehydrogenase, sirtuin and PARP assays.

Key research applications

  • Dehydrogenase kinetics followed by NADH absorbance at 340 nm
  • Sirtuin deacetylase assays, where NAD+ is a consumed co-substrate
  • PARP activity assays measuring ADP-ribosylation
  • Coupled enzyme systems in metabolic research

Stability and handling

NAD+ is relatively stable as a dry powder but degrades in alkaline solution. Prepare solutions fresh in a neutral to slightly acidic buffer, keep them on ice and freeze aliquots for later use.

Related reagents: NAD+ 500 mg laboratory reagent. Each batch ships with documented HPLC purity and a Certificate of Analysis on request.

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