Oxidative and hydrolytic transformations of hydroxylamine compounds in cyanobacteria

T. M. Shakila; N. S. Rao; S. N. Bagchi

doi:10.1007/BF00301852

Oxidative and hydrolytic transformations of hydroxylamine compounds in cyanobacteria

T. M. Shakila, N. S. Rao, S. N. Bagchi

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Abstract

Ammonia-incubated cyanobacteria liberated H₂O₂, accumulated hydroxylamine compounds and nitrite and catalyzed dismutation of hydroxylamine as well as oxidations of ammonia, glutamine, and oximes. Ethyl acetohydroximate-adapted Phormidium released excess H₂O₂ and phototrophically metabolized the oxime via hydrolysis and dismutation to nitrite and ammonia, which were consumed by nitrite reductase and glutamine synthetase. Added ammonia stimulated H₂O₂ production and oxime metabolism via glutamate dehydrogenase pathway.

Original language	English (US)
Pages (from-to)	282-285
Number of pages	4
Journal	Archives of Microbiology
Volume	162
Issue number	4
DOIs	https://doi.org/10.1007/BF00301852
State	Published - Oct 1 1994

Keywords

Ammonia metabolism
Cyanobacteria (Phormidium uncinatum)
Hydrogen peroxide production
Oxidation and dismutation of nitrogen compounds
Oxime metabolism

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title = "Oxidative and hydrolytic transformations of hydroxylamine compounds in cyanobacteria",

abstract = "Ammonia-incubated cyanobacteria liberated H2O2, accumulated hydroxylamine compounds and nitrite and catalyzed dismutation of hydroxylamine as well as oxidations of ammonia, glutamine, and oximes. Ethyl acetohydroximate-adapted Phormidium released excess H2O2 and phototrophically metabolized the oxime via hydrolysis and dismutation to nitrite and ammonia, which were consumed by nitrite reductase and glutamine synthetase. Added ammonia stimulated H2O2 production and oxime metabolism via glutamate dehydrogenase pathway.",

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AU - Rao, N. S.

AU - Bagchi, S. N.

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AB - Ammonia-incubated cyanobacteria liberated H2O2, accumulated hydroxylamine compounds and nitrite and catalyzed dismutation of hydroxylamine as well as oxidations of ammonia, glutamine, and oximes. Ethyl acetohydroximate-adapted Phormidium released excess H2O2 and phototrophically metabolized the oxime via hydrolysis and dismutation to nitrite and ammonia, which were consumed by nitrite reductase and glutamine synthetase. Added ammonia stimulated H2O2 production and oxime metabolism via glutamate dehydrogenase pathway.

KW - Ammonia metabolism

KW - Cyanobacteria (Phormidium uncinatum)

KW - Hydrogen peroxide production

KW - Oxidation and dismutation of nitrogen compounds

KW - Oxime metabolism

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Oxidative and hydrolytic transformations of hydroxylamine compounds in cyanobacteria

Abstract

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