Nicotinamide adenine dinucleotides are critical redox-active substrates for countless catabolic and anabolic reactions. Ratios of NAD+ to NADH and NADP+ to NADPH are therefore considered key indicators of the overall intracellular redox potential and metabolic state. These ratios can be measured in bulk conditions using a highly sensitive enzyme cycling-based colorimetric assay (detection limit at or below 0.05 μM or 1 pmol) following a simple extraction procedure involving solutions of acid and base. Special considerations are necessary to avoid measurement artifacts caused by the presence of endogenous redox-active metabolites, such as phenazines made by diverse Pseudomonas species (see Chapter 25).
CITATION STYLE
Kern, S. E., Price-Whelan, A., & Newman, D. K. (2014). Extraction and measurement of NAD(P)+ and NAD(P)H. Methods in Molecular Biology, 1149, 311–323. https://doi.org/10.1007/978-1-4939-0473-0_26
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