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FEMS Microbiol Lett. 1993 Nov 1;113(3):297-302.

Oxidation of carbazole to 3-hydroxycarbazole by naphthalene 1,2-dioxygenase and biphenyl 2,3-dioxygenase.

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Department of Microbiology, College of Medicine, University of Iowa, Iowa City 52242.


Naphthalene 1,2-dioxygenase from Pseudomonas sp. NCIB 9816-4 and biphenyl dioxygenase from Beijerinckia sp. B8/36 oxidized the aromatic N-heterocycle carbazole to 3-hydroxycarbazole. Toluene dioxygenase from Pseudomonas putida F39/D did not oxidize carbazole. Transformations were carried out by mutant strains which oxidize naphthalene and biphenyl to cis-dihydrodiols, and with a recombinant E. coli strain expressing the structural genes of naphthalene 1,2-dioxgenase from Pseudomonas sp. NCIB 9816-4. 3-Hydroxycarbazole is presumed to result from the dehydration of an unstable cis-dihydrodiol.

[Indexed for MEDLINE]

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