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Plate assays were developed for the identification of specific hydrolytic activities of esterases from Burkholderia gladioli, cloned and expressed in Escherichia coli. Clones showing different substrate specificities were identified by fluorescence or azo-dye formation caused by the released alcohol moiety of the hydrolyzed substrates, or by colour change(More)
The parCBA operon, which together with the parDE operon constitutes an efficient stabilization system of the broad-host-range plasmid RP4, encodes a 20 kDa polypeptide (ParB), which exhibits sequence homology to nucleases. The ParB protein was overexpressed by means of an inducible tac-promoter system. Plate assays with herring sperm DNA as substrate(More)
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