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Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12128/9079
Title: Influence of metal ions on bioremediation activity of protocatechuate 3,4-dioxygenase from Stenotrophomonas maltophilia KB2
Authors: Guzik, Urszula
Hupert-Kocurek, Katarzyna
Sałek, Karina
Wojcieszyńska, Danuta
Keywords: aromatic compounds; dioxygenases; metal ions; Stenotrophomonas
Issue Date: 2013
Citation: World Journal of Microbiology and Biotechnology, 2013, no. 2, s. 267-273
Abstract: The aim of this paper was to describe the effect of various metal ions on the activity of protocatechuate 3,4- dioxygenase from Stenotrophomonas maltophilia KB2. We also compared activity of different dioxygenases isolated from this strain, in the presence of metal ions, after induction by various aromatic compounds. S. maltophilia KB2 degraded 13 mM 3,4-dihydroxybenzoate, 10 mM benzoic acid and 12 mM phenol within 24 h of incubation. In the presence of dihydroxybenzoate and benzoate, the activity of protocatechuate 3,4-dioxygenase and catechol 1,2-dioxygenase was observed. Although Fe3?, Cu2 ?, Zn2?, Co2 ?, Al3 ?, Cd2 ?, Ni2 ? and Mn2? ions caused 20–80 % inhibition of protocatechuate 3,4-dioxygenase activity, the above-mentioned metal ions (with the exception of Ni2?) inhibited catechol 1,2-dioxygenase to a lesser extent or even activate the enzyme. Retaining activity of at least one of three dioxygenases from strain KB2 in the presence of metal ions makes it an ideal bacterium for bioremediation of contaminated areas.
URI: http://hdl.handle.net/20.500.12128/9079
DOI: 10.1007/s11274-012-1178-z
ISSN: 0959-3993
Appears in Collections:Artykuły (WBiOŚ)

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