title: Novel enzymatic activity of cell free extract from thermophilic Geobacillus sp. UZO 3 catalyzes reductive cleavage of diaryl ether bonds of 2,7-dichlorodibenzo-p-dioxin.
abstract: We characterized the ability of the cell free extract from polychlorinated dibenzo-p-dioxins degrading bacterium Geobacillus sp. UZO 3 to reduce even highly chlorinated dibenzo-p-dioxins such as octachlorodibenzo-p-dioxins in incineration fly ash. The degradation of 2,7-dichlorodibenzo-p-dioxin (2,7-DCDD) as a model dioxin catalyzed by the cell free extract from this strain implicates that the ether bonds of 2,7-DCDD molecule undergo reductive cleavage, since 4',5-dichloro-2-hydroxydiphenyl ether and 4-chlorophenol were detected as intermediate products of 2,7-DCDD degradation.
authors: Graduate School of Bio-Applications and Systems Engineering, Tokyo University of Agriculture & Technology, Koganei, Tokyo 184-8588, Japan.
authors: Yuzoh
authors: Y
authors: Suzuki
authors: Masaya
authors: M
authors: Nakamura
authors: Yuichiro
authors: Y
authors: Otsuka
authors: Nao
authors: N
authors: Suzuki
authors: Keisuke
authors: K
authors: Ohyama
authors: Takeshi
authors: T
authors: Kawakami
authors: Kanna
authors: K
authors: Sato
authors: Shinya
authors: S
authors: Kajita
authors: Shojiro
authors: S
authors: Hishiyama
authors: Takeo
authors: T
authors: Fujii
authors: Atsushi
authors: A
authors: Takahashi
authors: Yoshihiro
authors: Y
authors: Katayama
mesh_terms: D001426:Bacterial Proteins / Q000737:chemistry* / Q000378:metabolism; D001673:Biodegradation, Environmental; D002733:Chlorophenols / Q000737:chemistry / Q000378:metabolism; D004147:Dioxins / Q000737:chemistry* / Q000378:metabolism; D004785:Environmental Pollutants; D004987:Ethers / Q000737:chemistry / Q000378:metabolism; D056506:Geobacillus / Q000201:enzymology*
chemical_list: D001426:Bacterial Proteins; D002733:Chlorophenols; D004147:Dioxins; D004785:Environmental Pollutants; D004987:Ethers; C029107:4-chlorophenol; C000925:2,7-dichlorodibenzo-4-dioxin