Objective: Identification of a heavy metal ion-stimulated nitrilase with broad-spectrum substrate specificity.
Results: A novel nitrilase, PaCNit, was identified from Pannonibacter carbonis Q4.6 and its enzymatic properties were investigated. The maximum activity of PaCNit was observed at 65 °C and pH 7.0. PaCNit showed broad substrate specificity towards aliphatic, aromatic, and heterocyclic nitriles, and was tolerant to different organic solvents. Remarkably, PaCNit activity was highly stimulated by metal ions, particularly by Ag and Hg.
Conclusion: PaCNit nitrilase has a broad range of substrate specificity and can be activated by heavy metal ions. This specific characteristic makes it have a great potential for industrial application.
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