Translations:Nicotinamide riboside/4/en

History

Nicotinamide riboside (NR) has been identified as an NAD precursor, involved in salvage NAD synthesis in both bacteria and eukaryotes. In bacteria, it was first described in 1944 as a necessary growth factor for the culture of Haemophilus influenza, H. influenza was identified as requiring both X factor (hemin) and V factor (NAD) to grow. V factor, purified from blood, was shown to exist in three forms: Nicotinamide adenine dinucleotide (NAD+), NMN and NR. NR was the compound that led to the most rapid growth of the H. influenza bacterium.