May 14, 2004 · In this study, we show that nicotinamide riboside, which was known to be an NAD + precursor in bacteria such as Haemophilus influenza Gingrich and Schlenk 1944, Leder and Handler 1951, Shifrine and Biberstein 1960 that lack the enzymes of the de novo and Preiss-Handler pathways (Fleischmann et al., 1995), is an NAD + precursor in a previously unknown but apparently conserved eukaryotic NAD ...
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