Angestaubt, aber nicht eingerostet — der Bioreporter LacZ

Abstract

β-galactosidase encoded by lacZ remains a popular reporter enzyme. Here, we present a convenient tool box to facilitate rapid construction of reporter lacZ fusions. The first tool enables the simple generation of chromosomally encoded reporters within the Escherichia coli lac operon using Red®/ET® recombination. The second tool allows the introduction of lacZ reporter fusions into the chromosome by a single-crossover method. The third tool comprises four pBBR1-based broad-host-range vectors to derive transcriptional and translational lacZ fusions.