IUBMB Enzyme Nomenclature

EC 1.14.14.22

Accepted name: dibenzothiophene sulfone monooxygenase

Reaction: dibenzothiophene-5,5-dioxide + 2 FMNH2 + O2 = 2'-hydroxybiphenyl-2-sulfinate + 2 FMN + H2O

Glossary: dibenzothiophene-5,5-dioxide = dibenzothiophene sulfone

Other name(s): dszA (gene name)

Systematic name: dibenzothiophene-5,5-dioxide,FMNH2:oxygen oxidoreductase

Comments: This bacterial enzyme catalyses a step in the desulfurization pathway of dibenzothiophenes. The enzyme forms a two-component system with a dedicated NADH-dependent FMN reductase (EC 1.5.1.42) encoded by the dszD gene, which also interacts with EC 1.14.14.21, dibenzothiophene monooxygenase.

Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc, CAS registry number:

References:

1. Gray, K.A., Pogrebinsky, O.S., Mrachko, G.T., Xi, L., Monticello, D.J. and Squires, C.H. Molecular mechanisms of biocatalytic desulfurization of fossil fuels. Nat. Biotechnol. 14 (1996) 1705-1709. [PMID: 9634856]

2. Ohshiro, T., Kojima, T., Torii, K., Kawasoe, H. and Izumi, Y. Purification and characterization of dibenzothiophene (DBT) sulfone monooxygenase, an enzyme involved in DBT desulfurization, from Rhodococcus erythropolis D-1. J. Biosci. Bioeng. 88 (1999) 610-616. [PMID: 16232672]

3. Konishi, J., Ishii, Y., Onaka, T., Ohta, Y., Suzuki, M. and Maruhashi, K. Purification and characterization of dibenzothiophene sulfone monooxygenase and FMN-dependent NADH oxidoreductase from the thermophilic bacterium Paenibacillus sp. strain A11-2. J. Biosci. Bioeng. 90 (2000) 607-613. [PMID: 16232919]

4. Ohshiro, T., Ishii, Y., Matsubara, T., Ueda, K., Izumi, Y., Kino, K. and Kirimura, K. Dibenzothiophene desulfurizing enzymes from moderately thermophilic bacterium Bacillus subtilis WU-S2B: purification, characterization and overexpression. J. Biosci. Bioeng. 100 (2005) 266-273. [PMID: 16243275]

[EC 1.14.14.22 created 2016]


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