Optimized oxidoreductases for medium and large scale industrial biotransformations
Project Secretariat
Dr Marta Pérez-Boada
E-mail: MPBoada@cib.csic.es
Consejo Superior de Investigaciones Científicas (CSIC)
Biological Research Centre (CIB)
Calle Ramiro de Maeztu 9, E-28040 Madrid, Spain
Phone: 34 918373112
Fax: 34 915360432
Mobile: 34 650080476
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Total records: 122
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[ 2018 ] Carro J, Fernandez-Fueyo E, Fernández-Alonso C, Cañada J, Ullrich R, Hofrichter M, Alcalde M, Ferreira P, Martínez AT Self-sustained enzymatic cascade for the production of 2,5-furandicarboxylic acid from 5-methoxymethylfurfural Biotechnol. Biofuels, 11: 86-96
[ 2018 ] Carro J, Ferreira P, Martínez AT, Gadda G Stepwise Hydrogen Atom and Proton Transfers in Dioxygen Reduction by Aryl-Alcohol Oxidase Biochemistry, doi: 10.1021/acs.biochem.8b00106
[ 2018 ] Ewing TA, van Noord A, Paul CE, van Berkel WJ A Xylenol Orange-Based Screening Assay for the Substrate Specificity of Flavin-Dependent para-Phenol Oxidases Molecules, 23: 164-182
[ 2018 ] Gygli G, de Vries RP, van Berkel WJ On the origin of vanillyl alcohol oxidases Fungal Gen. Biol., 116: 24-32
[ 2018 ] Leonhardt S, Büttner E, Gebauer AM, Hofrichter M, Kellner H Draft Genome Sequence of the Sordariomycete Lecythophora (Coniochaeta) hoffmannii CBS 245.38 Genome Announc., 6
[ 2018 ] Martínez AT, Camarero S, Ruiz-Dueñas FJ, Martínez MJ Biological Lignin Degradation Lignin Valorization: Emerging Approaches. Ed. Gregg Beckham. RSC: 199-225
On the origin of vanillyl alcohol oxidases
Gygli G, de Vries RP, van Berkel WJ
Fungal Gen. Biol., 116: 24-32

Vanillyl alcohol oxidase (VAO) is a fungal flavoenzyme that converts a wide range of para-substituted phenols. The products of these conversions, e.g. vanillinconiferyl alcohol and chiral aryl alcohols, are of interest for several industries. VAO is the only known fungal member of the 4-phenol oxidising (4PO) subgroup of the VAO/PCMH flavoprotein family. While the enzyme has been biochemically characterised in great detail, little is known about its physiological role and distribution in fungi.

We have identified and analysed novel, fungal candidate VAOs and found them to be mostly present in Pezizomycotina and Agaricomycotina. The VAOs group into three clades, of which two clades do not have any characterised member. Interestingly, bacterial relatives of VAO do not form a single outgroup, but rather split up into two separate clades.

We have analysed the distribution of candidate VAOs in fungi, as well as their genomic environment. VAOs are present in low frequency in species of varying degrees of relatedness and in regions of low synteny. These findings suggest that fungal VAOs may have originated from bacterial ancestors, obtained by fungi through horizontal gene transfer.

Because the overall conservation of fungal VAOs varies between 60 and 30% sequence identity, we argue for a more reliable functional prediction using critical amino acid residues. We have defined a sequence motif P-x-x-x-x-S-x-G-[RK]-N-x-G-Y-G-[GS] that specifically recognizes 4PO enzymes of the VAO/PCMH family, as well as additional motifs that can help to further narrow down putative functions. We also provide an overview of fingerprint residues that are specific to VAOs.

Official webpage of indox [ industrialoxidoreductases ]. Optimized oxidoreductases for medium and large scale industrial biotransformations. This project has received funding from the European Union’s Seventh Framework Programme for research, technological development and demonstration under Grant Agreement nº: FP7-KBBE-2013-7-613549. © indox 2013. Developed by garcíarincón