Metabolism of nicotinamide adenine dinucleotide in human and bovine strainsof Mycobacterium tuberculosis.
نویسندگان
چکیده
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.
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ورودعنوان ژورنال:
- Journal of bacteriology
دوره 110 2 شماره
صفحات -
تاریخ انتشار 1972