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Isotopes in Environmental and Health Studies Volume 49, 2013 - Issue 1
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Original Articles

Kinetic and solvent deuterium isotope effects in the oxidation of putrescine catalysed by enzyme diamine oxidase

Katarzyna Pałka Department of Chemistry, University of Warsaw, Pasteur 1 str., Warsaw, 02-093, Poland
,
Jolanta Szymańska Department of Chemistry, University of Warsaw, Pasteur 1 str., Warsaw, 02-093, Poland
&
Marianna Kańska Department of Chemistry, University of Warsaw, Pasteur 1 str., Warsaw, 02-093, PolandCorrespondence[email protected]
Pages 3-8 | Received 28 Nov 2011, Accepted 04 Mar 2012, Published online: 27 Apr 2012
 
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Abstract

In this study, the kinetic isotope effects and solvent isotope effects in the reaction of the deamination of [(1R)-2H ] putrescine – catalysed by enzyme diamine oxidase (EC 1.4.3.6) – were determined using a non-competitive spectroscopic method. Putrescine, stereospecifically labelled with deuterium, was obtained by enzymatic decarboxylation of l-ornithine that was carried out in a fully deuteriated incubation medium.

Acknowledgement

This work was supported by grant no. 501/68-BW-191209.

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