Publikation: Enzymes involved in anaerobic degradation of acetone by a denitrifying bacterium
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The pathway of anaerobic acetone degradation by the denitrifying bacterial strain BunN was studied by enzyme measurements in extracts of anaerobic acetone-grown cells. An ADP- and MgC12-dependent decarboxylation of acetoacetate was detected which could not be found in cell-free extracts of acetate-grown cells. It is concluded that free acetoacetate is formed by ATP-dependent arboxylation of acetone. Acetoacetate was converted into its coenzyme A ester by succinyl-CoA: acetoacetate CoA transferase, and cleaved by a thiolase into acetyl-CoA. The acetyl residue was completely oxidized in the citric acid cycle. The ADP-dependent decarboxylation of acetoacetate was inhibited by EDTA, but not by avidin. High myokinase activities led to equilibrium amounts of ATP, ADP, and AMP in the reaction mixtures, and prevented determination of the decarboxylase reaction stoichiometry, therefore.
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PLATEN, Harald, Bernhard SCHINK, 1990. Enzymes involved in anaerobic degradation of acetone by a denitrifying bacterium. In: Biodegradation. 1990, 1(4), pp. 243-251. ISSN 0923-9820. eISSN 1572-9729. Available under: doi: 10.1007/BF00119761BibTex
@article{Platen1990Enzym-6809, year={1990}, doi={10.1007/BF00119761}, title={Enzymes involved in anaerobic degradation of acetone by a denitrifying bacterium}, number={4}, volume={1}, issn={0923-9820}, journal={Biodegradation}, pages={243--251}, author={Platen, Harald and Schink, Bernhard} }
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