Purification and properties of an inhibitor for nicotinamide-adenine dinucleotidase from Mycobacterium tuberculosis H37Rv

Gopinathan, KP and Ramakrishnan, T and Vaidyanathan, CS (1966) Purification and properties of an inhibitor for nicotinamide-adenine dinucleotidase from Mycobacterium tuberculosis H37Rv. In: Archives of Biochemistry and Biophysics, 113 (2). pp. 376-382.

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Abstract

The excess of free inhibitor for the enzyme NADase present in the crude cell-free extracts of Mycobacterium tuberculosis H37Rv has been purified by chromatography on a DEAE-cellulose column and adsorption and elution from alumina Cγ-gel. Some of the properties of the purified inhibitor have been studied and attempts have been made to elucidate the nature of combination between the enzyme and the inhibitor. The purified inhibitor may be glycoprotein in nature, and considerable loss in the activity of the inhibitor preparations could be brought about by trypsin digestion. The inhibitor was specific for the enzymes from M. tuberculosis H37Rv or H37Ra and could be stored for at least 6 months in the frozen state below 0 ° without any significant loss in activity. The inhibition was noncompetitive with respect to the substrates, and the enzyme-inhibitor complex formed was undissociable.

Item Type:	Journal Article
Publication:	Archives of Biochemistry and Biophysics
Publisher:	Elsevier Science
Additional Information:	Copyright of this article belongs to Elsevier Science.
Department/Centre:	Division of Biological Sciences > Biochemistry
Date Deposited:	18 May 2010 08:14
Last Modified:	19 Sep 2010 06:06
URI:	http://eprints.iisc.ac.in/id/eprint/27897

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