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Studies on an enzyme reacting with isoniazid fromMycobacterium tuberculosis H37Rv

Gayathri Devi, B and Ramakrishnan, T and Gopinathan, KP (1974) Studies on an enzyme reacting with isoniazid fromMycobacterium tuberculosis H37Rv. In: Proceedings: Plant Sciences, 80 (5). pp. 240-252.

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Official URL: http://www.springerlink.com/content/52j07721258882...

Abstract

Mycobacterium tuberculosis H37Rv possesses an enzyme (referred to as ‘Y enzyme’) which catalyses in the presence of INH and NAD, the formation of a product, which turns yellow on acidification. The requirements for the reaction, such as enzyme concentration, INH concentration, etc., have been standardized. The substrate specificity of the enzyme with respect to INH and NAD has been determined. The reaction is specific for the INH-sensitive strain and is totally absent in INH-resistant strains. Furthermore, the ‘Y enzyme’ shows some characteristic features of a peroxidase in its requirement for oxygen and sensitivity to inhibition by various reagents. The requirements of this enzyme which is involved in the action of isoniazid inM. tuberculosis H37Rv is described for the first time.

Item Type: Journal Article
Department/Centre: Division of Biological Sciences > Microbiology & Cell Biology
Date Deposited: 20 Jan 2010 11:32
Last Modified: 20 Jan 2010 11:32
URI: http://eprints.iisc.ernet.in/id/eprint/23316

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