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Winkler M, Breuer HG, Schober L. Aldehyde Reductase Activity of Carboxylic Acid Reductases. Chembiochem 2024; 25:e202400121. [PMID: 38349346 DOI: 10.1002/cbic.202400121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Revised: 02/13/2024] [Indexed: 03/09/2024]
Abstract
Carboxylic acid reductase enzymes (CARs) are well known for the reduction of a wide range of carboxylic acids to the respective aldehydes. One of the essential CAR domains - the reductase domain (R-domain) - was recently shown to catalyze the standalone reduction of carbonyls, including aldehydes, which are typically considered to be the final product of carboxylic acid reduction by CAR. We discovered that the respective full-length CARs were equally able to reduce aldehydes. Herein we aimed to shed light on the impact of this activity on aldehyde production and acid reduction in general. Our data explains previously inexplicable results and a new CAR from Mycolicibacterium wolinskyi is presented.
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Affiliation(s)
- Margit Winkler
- Institute of Molecular Biotechnology, Graz University of Technology, Petersgasse 14, 8010, Graz, Austria
- acib - Austrian Center of Industrial Biotechnology, Krenngasse 37, 8010, Graz, Austria
| | - Hannah G Breuer
- Institute of Molecular Biotechnology, Graz University of Technology, Petersgasse 14, 8010, Graz, Austria
| | - Lukas Schober
- Institute of Molecular Biotechnology, Graz University of Technology, Petersgasse 14, 8010, Graz, Austria
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Phipps J, Chen H, Donovan C, Dominguez D, Morgan S, Weidman B, Fan C, Beyzavi MH. Catalytic Activity, Stability, and Loading Trends of Alcohol Dehydrogenase Enzyme Encapsulated in a Metal-Organic Framework. ACS Appl Mater Interfaces 2020; 12:26084-26094. [PMID: 32478509 PMCID: PMC7815252 DOI: 10.1021/acsami.0c06964] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Recently, it has been shown that enzyme encapsulation inside metal-organic frameworks (MOFs) can increase enzyme activity and serve as protection from adverse environmental conditions. Little is understood about how the enzymes move into and are held inside the MOFs although it is believed that intermolecular forces between the MOF and the enzyme cause it to be held in place. If this process can be better understood, it can have dramatic implications on the cost-effectiveness and implementation of enzyme-MOF complexes. This is of specific importance in the medical sector for protein therapy and the industrial sector where enzyme use is expected to increase. Herein, we synthesized alcohol dehydrogenase (ADH) and PCN-333 to study encapsulation, stability, and enzyme activity to expand the knowledge of our field and offer a potential improvement to a synthetic route for biofuel synthesis. From this, we found a correlation between the concentration of a buffer and the loading of an enzyme, with surprising loading trends. We conclude that the buffer solution decreases interactions between the enzyme and MOF, supporting conventional theory and allowing it to penetrate deeper into the structure causing higher enzyme loading while allowing for excellent stability over time at various pH values and temperatures and after multiple reactions. We also observe new trends such as a rebounding effect in loading and "out-of-bounds" reactions.
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Affiliation(s)
- Josh Phipps
- Cell and Molecular Biology Program, University of Arkansas, Fayetteville, AR 72701, United States
| | - Hao Chen
- Cell and Molecular Biology Program, University of Arkansas, Fayetteville, AR 72701, United States
| | - Connor Donovan
- Department of Chemistry and Biochemistry, University of Arkansas, Fayetteville, AR 72701, United States
| | - Dylan Dominguez
- Department of Chemistry and Biochemistry, University of Arkansas, Fayetteville, AR 72701, United States
| | - Sydney Morgan
- Department of Chemistry and Biochemistry, University of Arkansas, Fayetteville, AR 72701, United States
| | - Barrett Weidman
- Department of Chemistry and Biochemistry, University of Arkansas, Fayetteville, AR 72701, United States
| | - Chenguang Fan
- Cell and Molecular Biology Program, University of Arkansas, Fayetteville, AR 72701, United States
- Department of Chemistry and Biochemistry, University of Arkansas, Fayetteville, AR 72701, United States
| | - M. Hassan Beyzavi
- Cell and Molecular Biology Program, University of Arkansas, Fayetteville, AR 72701, United States
- Department of Chemistry and Biochemistry, University of Arkansas, Fayetteville, AR 72701, United States
- Corresponding Author: Address correspondence to M. Hassan Beyzavi, Department of Chemistry and Biochemistry, University of Arkansas, Fayetteville, AR, 345 N Campus Dr., Fayetteville, AR 72701 USA.
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Heyl D, Kreyenschulte C, Kondratenko VA, Bentrup U, Kondratenko EV, Brückner A. Alcohol Synthesis from CO 2 , H 2 , and Olefins over Alkali-Promoted Au Catalysts-A Catalytic and In situ FTIR Spectroscopic Study. ChemSusChem 2019; 12:651-660. [PMID: 30451389 DOI: 10.1002/cssc.201801937] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Revised: 10/30/2018] [Indexed: 06/09/2023]
Abstract
Au/TiO2 and Au/SiO2 catalysts containing 2 wt % Au and different amounts of K or Cs were tested for alcohol synthesis from CO2 , H2 , and C2 H4 /C3 H6 . 1-Propanol or 1-butanol/isobutanol were obtained in the presence of C2 H4 or C3 H6 . Higher yields of the corresponding alcohols were obtained over TiO2 -based catalysts in comparison with their SiO2 -based counterparts. This is caused by an enhanced ability of the TiO2 -based catalysts for CO2 activation, as concluded from in situ fourier-transform infrared (FTIR) spectroscopy and temporal analysis of products (TAP) studies. The synthesized carbonate and formate species adsorbed on the support do not hamper CO2 conversion into CO and the hydroformylation reaction. The transformation of Auδ+ to active Au0 sites proceeds during an activation procedure. As reflected by CO adsorption and scanning transmission electron microscopy, the accessible Au0 sites are influenced by the amount of alkali dopants and the support. FTIR data and TAP tests reveal a very weak interaction of C2 H4 with the catalyst, suggesting its quick reaction with CO and H2 after activation on Au0 sites to form propanol and propane.
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Affiliation(s)
- Denise Heyl
- Leibniz-Institut für Katalyse e. V. an der, Universität Rostock (LIKAT), Albert-Einstein-Str. 29a, 18059, Rostock, Germany
| | - Carsten Kreyenschulte
- Leibniz-Institut für Katalyse e. V. an der, Universität Rostock (LIKAT), Albert-Einstein-Str. 29a, 18059, Rostock, Germany
| | - Vita A Kondratenko
- Leibniz-Institut für Katalyse e. V. an der, Universität Rostock (LIKAT), Albert-Einstein-Str. 29a, 18059, Rostock, Germany
| | - Ursula Bentrup
- Leibniz-Institut für Katalyse e. V. an der, Universität Rostock (LIKAT), Albert-Einstein-Str. 29a, 18059, Rostock, Germany
| | - Evgenii V Kondratenko
- Leibniz-Institut für Katalyse e. V. an der, Universität Rostock (LIKAT), Albert-Einstein-Str. 29a, 18059, Rostock, Germany
| | - Angelika Brückner
- Leibniz-Institut für Katalyse e. V. an der, Universität Rostock (LIKAT), Albert-Einstein-Str. 29a, 18059, Rostock, Germany
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