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Authors: Engesser, Karl-Heinrich
Fietz, Walter H.
Fischer, Peter
Schulte, P.
Knackmuss, Hans-Joachim
Title: Dioxygenolytic cleavage of aryl ether bonds: 1,2-Dihydro-1,2-dihydroxy-4-carboxybenzophenone as evidence for initial 1,2-dioxygenation in 3- and 4-carboxy biphenyl ether degradation
Issue Date: 1990 Zeitschriftenartikel FEMS microbiology letters 69 (1990), S. 317-321. URL
Abstract: A bacterial strain, Pseudomonas sp. POB 310, was enriched with 4-carboxy biphenyl ether as sole source of carbon and energy. Resting cells of POB 310 co-oxidize a substrate analogue, 4-carboxybenzophenone, yielding 1,2-dihydro-1,2-dihydroxy-4-carboxy-benzophenone. The ether bond of 3- and 4-carboxy biphenyl ether is cleaved analogously by initial 1,2-dioxygenation, yielding a hemiacetal which is hydrolysed to proto-catechuate and phenol. These intermediates are degraded via an ortho and meta pathway, respectively. Alternative 2,3- and 3,4-dioxygenation can be ruled out as triggering steps in carboxy biphenyl ether degradation.
Appears in Collections:04 Fakultät Energie-, Verfahrens- und Biotechnik

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