A promiscuous cytochrome P450 aromatic O-demethylase for lignin bioconversion.
A promiscuous cytochrome P450 aromatic O-demethylase for lignin bioconversion.
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DOI:
10.1038/s41467-018-04878-2
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发表时间:
2018-06-27
影响因子:
16.6
通讯作者:
McGeehan JE
中科院分区:
文献类型:
--
作者:
Mallinson SJB;Machovina MM;Silveira RL;Garcia-Borràs M;Gallup N;Johnson CW;Allen MD;Skaf MS;Crowley MF;Neidle EL;Houk KN;Beckham GT;DuBois JL;McGeehan JE
Microbial aromatic catabolism offers a promising approach to convert lignin, a vast source of renewable carbon, into useful products. Aryl-O-demethylation is an essential biochemical reaction to ultimately catabolize coniferyl and sinapyl lignin-derived aromatic compounds, and is often a key bottleneck for both native and engineered bioconversion pathways. Here, we report the comprehensive characterization of a promiscuous P450 aryl-O-demethylase, consisting of a cytochrome P450 protein from the family CYP255A (GcoA) and a three-domain reductase (GcoB) that together represent a new two-component P450 class. Though originally described as converting guaiacol to catechol, we show that this system efficiently demethylates both guaiacol and an unexpectedly wide variety of lignin-relevant monomers. Structural, biochemical, and computational studies of this novel two-component system elucidate the mechanism of its broad substrate specificity, presenting it as a new tool for a critical step in biological lignin conversion. Catabolizing lignin-derived aromatic compounds requires an aryl-O-demethylation step. Here the authors present the structures of GcoA and GcoB, a cytochrome P450-reductase pair that catalyzes aryl-O-demethylations and show that GcoA displays broad substrate specificity, which is of interest for biotechnology applications.
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影响因子:
4.3
作者:
Bell, Stephen G.;Zhou, Ruimin;Zhou, Weihong
通讯作者:
Zhou, Weihong
DOI:
10.1107/s0907444909052925
发表时间:
2010-02
期刊:
Acta crystallographica. Section D, Biological crystallography
影响因子:
--
作者:
Adams PD;Afonine PV;Bunkóczi G;Chen VB;Davis IW;Echols N;Headd JJ;Hung LW;Kapral GJ;Grosse-Kunstleve RW;McCoy AJ;Moriarty NW;Oeffner R;Read RJ;Richardson DC;Richardson JS;Terwilliger TC;Zwart PH
通讯作者:
Zwart PH
影响因子:
2.9
作者:
CHRASTIL, J;WILSON, JT
通讯作者:
WILSON, JT
影响因子:
3.9
作者:
DARDAS, A;GAL, D;PELMONT, J
通讯作者:
PELMONT, J
影响因子:
4.4
作者:
BECKE, AD
通讯作者:
BECKE, AD