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  • 1
    Digitale Medien
    Digitale Medien
    Dechlorination of pentachlorophenol by membrane bound enzymes of Rhodococcus chlorophenolicus PCP-I (1991)
    Springer
    Biodegradation 2 (1991), S. 25-31 
    Details
    ISSN: 1572-9729
    Schlagwort(e): cell extract ; cytochrome P450 ; dechlorination ; para-hydroxylation ; Pentachlorophenol ; Rhodococcus chlorophenolicus PCP-I
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Energietechnik , Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Abstract Dechlorination (para-hydroxylation) of pentachlorophenol (PCP) and tetrachloro-para-hydroquinone (TeCH) and O-methylation of TeCH were demonstrated in cell extracts of Rhodococcus chlorophenolicus PCP-I. PCP para-hydroxylating activity was membrane bound, whereas TeCH dechlorinating enzyme was soluble. The PCP para-hydroxylating enzyme was solubilized by Triton X-100 and the requirement for both FAD and NADPH was shown. The dechlorinating activities were inducible in contrast to the constitutive TeCH O-methylating activity. The PCP para-hydroxylation was inhibited by its product TeCH, by anoxic conditions, and by different inhibitors of P450. Participation of this cytochrome in the PCP hydroxylation was confirmed by the appearance of a carbon monoxide dependent peak of absorbance at 457 nm in the membrane fraction prepared from PCP degrading cells.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00122422
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Metabolism of halohydroquinones inRhodococcus chlorophenolicus PCP-1 (1995)
    Springer
    Biodegradation 6 (1995), S. 119-126 
    Details
    ISSN: 1572-9729
    Schlagwort(e): biodegradation ; aromatic dechlorination ; reductive dechlorination ; hydrolytic dechlorination ; pentachlorophenol ; ring cleavage ; chlorohydroquinone ; bromohydroquinone ; fluorohydroquinone
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Energietechnik , Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Abstract The actinomyceteRhodococcus chlorophenolicus PCP-1 metabolises pentachlorophenol into ultimate inorganic end products via tetrachloro-p-hydroquinone. This intermediate was further dehalogenated in the cytoplasm requiring reductant in the cell free system. Tetrafluoro-p-hydroquinone and tetrabromo-p-hydroquinone were also dehalogenated. Chlorophenol analogs, thiol blocking agents and molecular oxygen inhibited the activity. The dehalogenating reactions led to 1,2,4-trihydroxybenzene, which was further metabolized into maleic acid.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00695342
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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