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Overcoming the Gas–Liquid Mass Transfer of Oxygen by Coupling Photosynthetic Water Oxidation with Biocatalytic Oxyfunctionalization

Gas–liquid mass transfer of gaseous reactants is a major limitation for high space–time yields, especially for O(2)‐dependent (bio)catalytic reactions in aqueous solutions. Herein, oxygenic photosynthesis was used for homogeneous O(2) supply via in situ generation in the liquid phase to overcome thi...

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Detalles Bibliográficos
Autores principales: Hoschek, Anna, Bühler, Bruno, Schmid, Andreas
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5708270/
https://www.ncbi.nlm.nih.gov/pubmed/28945948
http://dx.doi.org/10.1002/anie.201706886
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author Hoschek, Anna
Bühler, Bruno
Schmid, Andreas
author_facet Hoschek, Anna
Bühler, Bruno
Schmid, Andreas
author_sort Hoschek, Anna
collection PubMed
description Gas–liquid mass transfer of gaseous reactants is a major limitation for high space–time yields, especially for O(2)‐dependent (bio)catalytic reactions in aqueous solutions. Herein, oxygenic photosynthesis was used for homogeneous O(2) supply via in situ generation in the liquid phase to overcome this limitation. The phototrophic cyanobacterium Synechocystis sp. PCC6803 was engineered to synthesize the alkane monooxygenase AlkBGT from Pseudomonas putida GPo1. With light, but without external addition of O(2), the chemo‐ and regioselective hydroxylation of nonanoic acid methyl ester to ω‐hydroxynonanoic acid methyl ester was driven by O(2) generated through photosynthetic water oxidation. Photosynthesis also delivered the necessary reduction equivalents to regenerate the Fe(2+) center in AlkB for oxygen transfer to the terminal methyl group. The in situ coupling of oxygenic photosynthesis to O(2)‐transferring enzymes now enables the design of fast hydrocarbon oxyfunctionalization reactions.
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spelling pubmed-57082702017-12-04 Overcoming the Gas–Liquid Mass Transfer of Oxygen by Coupling Photosynthetic Water Oxidation with Biocatalytic Oxyfunctionalization Hoschek, Anna Bühler, Bruno Schmid, Andreas Angew Chem Int Ed Engl Communications Gas–liquid mass transfer of gaseous reactants is a major limitation for high space–time yields, especially for O(2)‐dependent (bio)catalytic reactions in aqueous solutions. Herein, oxygenic photosynthesis was used for homogeneous O(2) supply via in situ generation in the liquid phase to overcome this limitation. The phototrophic cyanobacterium Synechocystis sp. PCC6803 was engineered to synthesize the alkane monooxygenase AlkBGT from Pseudomonas putida GPo1. With light, but without external addition of O(2), the chemo‐ and regioselective hydroxylation of nonanoic acid methyl ester to ω‐hydroxynonanoic acid methyl ester was driven by O(2) generated through photosynthetic water oxidation. Photosynthesis also delivered the necessary reduction equivalents to regenerate the Fe(2+) center in AlkB for oxygen transfer to the terminal methyl group. The in situ coupling of oxygenic photosynthesis to O(2)‐transferring enzymes now enables the design of fast hydrocarbon oxyfunctionalization reactions. John Wiley and Sons Inc. 2017-10-27 2017-11-20 /pmc/articles/PMC5708270/ /pubmed/28945948 http://dx.doi.org/10.1002/anie.201706886 Text en © 2017 The Authors. Published by Wiley-VCH Verlag GmbH & Co. KGaA. This is an open access article under the terms of the Creative Commons Attribution‐NonCommercial (http://creativecommons.org/licenses/by-nc/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.
spellingShingle Communications
Hoschek, Anna
Bühler, Bruno
Schmid, Andreas
Overcoming the Gas–Liquid Mass Transfer of Oxygen by Coupling Photosynthetic Water Oxidation with Biocatalytic Oxyfunctionalization
title Overcoming the Gas–Liquid Mass Transfer of Oxygen by Coupling Photosynthetic Water Oxidation with Biocatalytic Oxyfunctionalization
title_full Overcoming the Gas–Liquid Mass Transfer of Oxygen by Coupling Photosynthetic Water Oxidation with Biocatalytic Oxyfunctionalization
title_fullStr Overcoming the Gas–Liquid Mass Transfer of Oxygen by Coupling Photosynthetic Water Oxidation with Biocatalytic Oxyfunctionalization
title_full_unstemmed Overcoming the Gas–Liquid Mass Transfer of Oxygen by Coupling Photosynthetic Water Oxidation with Biocatalytic Oxyfunctionalization
title_short Overcoming the Gas–Liquid Mass Transfer of Oxygen by Coupling Photosynthetic Water Oxidation with Biocatalytic Oxyfunctionalization
title_sort overcoming the gas–liquid mass transfer of oxygen by coupling photosynthetic water oxidation with biocatalytic oxyfunctionalization
topic Communications
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5708270/
https://www.ncbi.nlm.nih.gov/pubmed/28945948
http://dx.doi.org/10.1002/anie.201706886
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