| Literature DB >> 4336690 |
Abstract
A marked difference was found to exist between the nicotinamide adenine dinucleotide (NAD) glycohydrolase activity of human strains of Mycobacterium tuberculosis as compared with bovine strains. Human strains had from 6- to 20-fold higher NAD glycohydrolase activity than bovine strains. This finding explains the accumulation of free nicotinic acid in the culture medium by human strains and not by bovine strains. The biosynthetic intermediates nicotinic acid mononucleotide and deamido-NAD were not degraded by either human or bovine strains of M. tuberculosis; hence these nucleotides do not represent a source of the nicotinic acid accumulated by the human strains.Entities:
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Year: 1972 PMID: 4336690 PMCID: PMC247454 DOI: 10.1128/jb.110.2.600-603.1972
Source DB: PubMed Journal: J Bacteriol ISSN: 0021-9193 Impact factor: 3.490