Identification of the monooxygenase gene clusters responsible for the regioselective oxidation of phenol to hydroquinone in mycobacteria

Toshiki Furuya, Satomi Hirose, Hisashi Osanai, Hisashi Semba, Kuniki Kino

研究成果: Article

21 引用 (Scopus)

抜粋

Mycobacterium goodii strain 12523 is an actinomycete that is able to oxidize phenol regioselectively at the para position to produce hydroquinone. In this study, we investigated the genes responsible for this unique regioselective oxidation. On the basis of the fact that the oxidation activity of M. goodii strain 12523 toward phenol is induced in the presence of acetone, we first identified acetone-induced proteins in this microorganism by two-dimensional electrophoretic analysis. The N-terminal amino acid sequence of one of these acetoneinduced proteins shares 100% identity with that of the protein encoded by the open reading frame Msmeg_1971 in Mycobacterium smegmatis strain mc2155, whose genome sequence has been determined. Since Msmeg_1971, Msmeg_1972, Msmeg_1973, and Msmeg_1974 constitute a putative binuclear iron monooxygenase gene cluster, we cloned this gene cluster of M. smegmatis strain mc2155 and its homologous gene cluster found in M. goodii strain 12523. Sequence analysis of these binuclear iron monooxygenase gene clusters revealed the presence of four genes designated mimABCD, which encode an oxygenase large subunit, a reductase, an oxygenase small subunit, and a coupling protein, respectively. When the mimA gene (Msmeg_1971) of M. smegmatis strain mc2155, which was also found to be able to oxidize phenol to hydroquinone, was deleted, this mutant lost the oxidation ability. This ability was restored by introduction of the mimA gene of M. smegmatis strain mc2155 or of M. goodii strain 12523 into this mutant. Interestingly, we found that these gene clusters also play essential roles in propane and acetone metabolism in these mycobacteria.

元の言語English
ページ(範囲)1214-1220
ページ数7
ジャーナルApplied and Environmental Microbiology
77
発行部数4
DOI
出版物ステータスPublished - 2011 2 1

ASJC Scopus subject areas

  • Biotechnology
  • Food Science
  • Applied Microbiology and Biotechnology
  • Ecology

フィンガープリント Identification of the monooxygenase gene clusters responsible for the regioselective oxidation of phenol to hydroquinone in mycobacteria' の研究トピックを掘り下げます。これらはともに一意のフィンガープリントを構成します。

  • これを引用