Substrate Specificity of Mammalian Pyridine Nucleotide Transglycosidases.

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Substrate specificity of mammalian pyridine nucleotide transglycosidases.

Spectrophotometrical analysis of pyridine nucleotide transglycosidase in mammalian tissues indicated that the enzyme activity was observed to be distributed ubiquitously among the mammalian tissues analyzed, although the velocity ratio of transglycosidation/hydrolysis (vT/vH) and the partitioning of nicotinic acid against water differed with the pyridine nucleotide substrate and the mammalian s...

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Pyridine Nucleotide Transhydrogenase

established unequivocally that either a hydrogen or electron transfer was involved in this reaction. The possibility of a transfer of the monoester phosphate group or an exchange of reduced and oxidized nicotinamidecontaining moieties (nucleoside, nucleotide, etc.) was ruled out by this and other experiments. There still remained, however, the problem of distinguishing experimentally between th...

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ژورنال

عنوان ژورنال: Journal of Nutritional Science and Vitaminology

سال: 2002

ISSN: 0301-4800,1881-7742

DOI: 10.3177/jnsv.48.171