Karl-Heinrich Engesser

TL;DR: Critical enzymes from five different catabolic pathways of three distinct soil bacteria have been combined in patchwork fashion into a functional ortho cleavage route for the degradation of methylphenols and methylbenzoates and a new bacterium thereby evolved was able to degrade and grow on mixtures of chloro- and methylaromatics that were toxic even for the bacteria that could degrade the individual components of the mixtures.

TL;DR: Of eleven substituted phenoxyacetic acids tested, only three (2,4-dichloro-, 4-chloro-2-methyl- and 2-methylphen Oxyacetic acid) served as growth substrates for Alcaligenes eutrophus JMP 134, and there was evidence for the presence of three different phenol hydroxylases in this strain.

TL;DR: An acidic pH seemed to render the mycobacterial cells more permeable to hydrophobic substrates, and the non-K-region polycyclic aromatic hydrocarbon oxidation might be a significant burden to the cell due to the accumulation of toxic metabolites.

TL;DR: It is shown that most Rhodococcus isolates contain three to five quite divergent homologues of the Pseudomonas putida GPo1 alkB gene, and two Mycobacterium isolates each contain one homologue, however there is no evidence for the presence of alkB homologue in the remaining strains.

TL;DR: Two dibenzofuran degrading bacteria were found to utilize fluorene as sole source of carbon and energy and the presence of a novel type of dioxygenase, attacking polynuclear aromatic systems in the unusual angular position was indicated.