Optimized oxidoreductases for medium and large scale industrial biotransformations
Total records:
126
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[ 2017 ]
Alcalde M When directed evolution met ancestral enzyme resurrection
Microbial Biotechnol., 10: 22-24
[ 2017 ]
Ayuso-Fernández I, Martínez AT, Ruiz-Dueñas FJ Experimental recreation of the evolution of lignin-degrading enzymes from the Jurassic to date
Biotechnol. Biofuels, 10: 67
[ 2017 ]
Carro J, Martínez A, Medina M, Martínez AT, Ferreira P Protein dynamics promote hydride tunnelling in substrate oxidation by aryl-alcohol oxidase
Phys. Chem. Chem. Phys., 19: 28666-28675
[ 2017 ]
González-Pérez D, Alcalde M The making of versatile peroxidase by directed evolution
Biocatalysis and Biotransformation, doi: 10.1080/10242422.2017.1363190
[ 2017 ]
Gygli G, Lucas F, Guallar V, van Berkel WJ The ins and outs of vanillyl alcohol oxidase: Identification of ligand migration paths
PLoS Comput. Biol., 13
[ 2017 ]
Martínez AT, Ruiz-Dueñas FJ, Camarero S, Serrano A, Linde D, Lund H, Vind J, Tovborg M, Herold-Majumdar OM, Hofrichter M, Liers C, Ullrich R, Scheibner K, Sannia G, Piscitelli A, Sener ME, Kılıç S, van Berkel WJ, Guallar V, et al. Oxidoreductases on their way to industrial biotransformations
Biotechnol. Adv., 35: 815-831
year2016
Alkaline versatile peroxidase by directed evolution
González-Pérez D, Mateljak I, García-Ruiz E, Ruiz-Dueñas FJ, Martínez AT, Alcalde M
Catal. Sci. Technol., 6: 6625-6636
Ligninolytic peroxidases are involved in natural wood decay in strict acid environments. Despite their biotechnological interest, these high-redox potential enzymes are not functional at basic pH due to the loss of calcium ions that affects their structural integrity. In this study, we have built catalytic activity at basic pH in a versatile peroxidase (VP) previously engineered for thermostability. By using laboratory evolution and hybrid approaches, we designed an active and highly stable alkaline VP while the catalytic bases behind the alkaline activation were unveiled. A stabilizing mutational backbone allowed the pentacoordinated heme state to be maintained, and the new alkaline mutations hyperactivated the enzyme after incubation at basic pHs. The final mutant oxidises substrates at alkaline pHs both at the heme channel and at the Mn2+ site, while the catalytic tryptophan was not operational under these conditions. Mutations identified in this work could be transferred to other ligninolytic peroxidases for alkaline activation.
Official webpage of
[ 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
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