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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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Simultaneous analysis of NAD- and NADP-linked activities of dual nucleotide-specific dehydrogenases. Application to Leuconostoc mesenteroides glucose-6-phosphate dehydrogenase.

A method is described which enables one to assay simultaneously the NAD- and NADP-linked reactions of dehydrogenases which can utilize both coenzymes. The method is based on the fact that the thionicotinamide analogs of NADH and NADPH absorb light maximally at 400 nm, a wavelength sufficiently far removed from the absorbance maximum of NADH and NADPH to permit measurements of the simultaneous reduction of NAD+ (or NADP+) and the thionicotinamide analog of NADP+ (or NAD+). Application of the method to glucose-6-phosphate dehydrogenase from Leuconostoc mesenteroides reveals differential effects of glucose 6-phosphate concentration on the NAD- and NADP-linked reactions catalyzed by this enzyme which can not be detected by conventional assay procedures and which may have regulatory significance.[1]

References

  1. Simultaneous analysis of NAD- and NADP-linked activities of dual nucleotide-specific dehydrogenases. Application to Leuconostoc mesenteroides glucose-6-phosphate dehydrogenase. Levy, H.R., Daouk, G.H. J. Biol. Chem. (1979) [Pubmed]
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