BACKGROUND The Rhodococcus ruber strain Chol-4 genome contains at least three putative 3-ketosteroid Δ1-dehydrogenase ORFs (kstD1, kstD2 and kstD3) that code for flavoenzymes involved in the steroid ring degradation. The aim of this work is the functional characterization of these enzymes prior to the developing of different biotechnological applications. RESULTS The three R. ruber KstD enzym...

There is world wide concern about the liberation of hydrocarbons in the environment, both from industrial activities and from accidental spills of oil and oil-related compounds. Biosurfactants, which are natural emulsifiers of hydrocarbons, are produced by some bacteria, fungi and yeast. They are polymers, totally or partially extracellular, with an amphipathyc structure, which allows them to f...

Controlling the selectivity of a chemical reaction with external stimuli is common in thermal processes, but rare visible-light photocatalysis. Here we show that redox potential carbon nitride photocatalyst (CN-OA-m) can be tuned by changing irradiation wavelength to generate electron holes different oxidation potentials. This tuning was key realizing photo-chemo-enzymatic cascades give either ...

The comparative analysis of microbial communities of pure and oil – polluted soils of Ukraine conducted by us has shown the considerable predominance in the latter the representatives of Rhodococcus and Gordonia genera. Among them the most part of strains belonged to the species of Rhodococcus erythropolis and Gordonia rubripertincta. Rhodococcus fascians, Rhodococcus ruber and Dietzia maris sp...