Purification and properties of fluoroacetate dehalogenase from Pseudomonas fluorescens DSM 8341

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Title: Purification and properties of fluoroacetate dehalogenase from Pseudomonas fluorescens DSM 8341
Authors: Donnelly, Clár
Murphy, Cormac D.
Permanent link: http://hdl.handle.net/10197/3745
Date: 2009
Online since: 2012-08-17T14:18:59Z
Abstract: The degradation of fluoroacetate by microorganisms has been established for some time, although only a handful of dehalogenases capable of hydrolyzing the stable C-F bond have been studied. The bacterium Pseudomonas fluorescens DSM 8341 was originally isolated from soil and very readily degraded fluoroacetate, thus it was thought that its dehalogenase might have some desirable properties. The enzyme was purified from cell free extracts and characterised: it is a monomer of 32,500 Da, with a pH optimum of 8 and is stable between pH 4 and 10; its activity is stimulated by some metal ions (Mg2+, Mn2+ and Fe3+), but inhibited by others (Hg2+, Ag2+). The enzyme is specific for fluoroacetate, and the Km for this substrate (0.68 mM) is the lowest determined for enzymes of this type that have been investigated to date.
Funding Details: Other funder
Type of material: Journal Article
Publisher: Springer
Journal: Biotechnology Letters
Volume: 31
Issue: 2
Start page: 245
End page: 250
Copyright (published version): 2008 Springer Science+Business Media B.V.
Keywords: DehalogenationFluoroacetateFluorocitratePseudomonas fluorescens
Subject LCSH: Halogen compounds
Organofluorine compounds--Purification
Pseudomonas fluorescens
DOI: 10.1007/s10529-008-9849-4
Language: en
Status of Item: Peer reviewed
Appears in Collections:Biomolecular and Biomedical Science Research Collection
CSCB Research Collection

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