Biphenyl hydroxylation enhanced by an engineered o xylene dioxygenase from Rhodococcus sp. strain DK17
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- Biphenyl hydroxylation enhanced by an engineered o xylene dioxygenase from Rhodococcus sp. strain DK17
- Other Titles
- Rhodococcus sp. strain DK17 유래 개량형 o-xylene dioxygenase에 의한 biphenyl hydroxylation 효과 상승
- Kang, Beom Sik
Zylstra, Gerben J.
- Rhodococcus; Rieske dioxygenase; aromatic hydroxylation; hydrophobic interaction
- Issue Date
- Kang, Beom Sik, et al. 2011. "Biphenyl hydroxylation enhanced by an engineered o xylene dioxygenase from Rhodococcus sp. strain DK17". Research in Microbiology, 162: 724-728.
- Hydroxylation of the non-growth substrate biphenyl by recombinant o-xylene dioxygenases from Rhodococcus sp. strain DK17 was studied through bioconversion experiments. The metabolites from the biphenyl hydroxylation by each enzyme were identified and quantified by gas chromatography-mass spectrometry. The L266F mutant enzyme produced much more 2 hydroxybiphenyl (2.43 vs. 0.1 μg/L) and 3 hydroxybiphenyl (1.97 vs. 0.03 μg/L) than the wild-type. Site-directed mutagenesis combined with structural and functional analyses indicated that hydrophobic interactions and shielding effects against water are important factors in the hydroxylation of biphenyl by the o xylene dioxygenase. The residue at position 266 plays a key role in coordinating the reaction.
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