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  • enzyme
  • This hypothesis was supported by the results from enzyme assays of the crude cell extract of the consortium revealing catechol 1,2-dioxygenase activity which converted catechol and 4-chlorocatechol to cis,cis-muconic acid and 3-chloro-cis,cis-muconic acid respectively. (kent.ac.uk)
  • metabolite
  • Biodegradability tests and partial sequence analysis of the enrichment culture indicated that 4-aminopyridine was mainly degraded via 3,4-dihydroxypyridine and that the metabolite is probably cleaved by 3-hydroxy-4-pyridone dioxygenase. (biomedcentral.com)
  • activity
  • Dioxin dioxygenase activity in Escherichia coli cells containing the cloned dxnA1A2 gene was achieved only through coexpression of the cognate electron supply system from RW1. (asm.org)
  • system
  • 6-9 In particular, the manganese-dependent dioxygenase (MndD) is a system that has attracted much attention since its catalytic mechanism is still under discussion. (rsc.org)