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Sproß J, Yamashita Y, Gröger H. Learning about Enzyme Stability against Organic Cosolvents from Structural Insights by Ion Mobility Mass Spectrometry. Chembiochem 2020; 21:1968-1971. [PMID: 31994801 PMCID: PMC7496688 DOI: 10.1002/cbic.201900648] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Revised: 01/25/2020] [Indexed: 11/11/2022]
Abstract
Ion mobility spectrometry (IMS) coupled with mass spectrometry (MS) enables the investigation of protein folding in solution. Herein, a proof-of-concept for obtaining structural information about the folding of a protein in dependency of the amount of an organic cosolvent in the aqueous medium by means of this IMS-MS method is presented. By analyzing the protein with native nano-electrospray ionization IMS-MS, the impact of acetonitrile as a representative organic cosolvent and/or pH values on the folding of an enzyme was successfully evaluated in a fast and straightforward fashion, as exemplified for an ene reductase from Gluconobacter oxydans. The IMS-MS results are in agreement with findings from the nicotinamide adenine dinucleotide phosphate (NADPH)-based spectrophotometric enzyme activity tests under analogous conditions, and thus, also rationalizing these "wet" analytical data. For this ene reductase, a higher tolerance against CH3 CN in the presence of a buffer was observed by both analytical methods. The results suggest that this IMS-MS methodology could be a useful complementary tool to existing methods in process optimization and fine-tuning of solvent conditions for biotransformations.
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Affiliation(s)
- Jens Sproß
- Chair of Industrial Organic Chemistry and Biotechnology, Faculty of Chemistry, Bielefeld University, Universitätsstrasse25, 33615, Bielefeld, Germany
| | - Yasunobu Yamashita
- Chair of Industrial Organic Chemistry and Biotechnology, Faculty of Chemistry, Bielefeld University, Universitätsstrasse25, 33615, Bielefeld, Germany
| | - Harald Gröger
- Chair of Industrial Organic Chemistry and Biotechnology, Faculty of Chemistry, Bielefeld University, Universitätsstrasse25, 33615, Bielefeld, Germany
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2
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Devlin R, Jones DJ, McGlacken GP. One-Pot, Tandem Wittig Hydrogenation: Formal C(sp 3)-C(sp 3) Bond Formation with Extensive Scope. Org Lett 2020; 22:5223-5228. [PMID: 32574057 DOI: 10.1021/acs.orglett.0c01874] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A one-pot, tandem Wittig hydrogenation of aldehydes with stabilized ylides is reported, representing a formal C(sp3)-C(sp3) bond construction. The tandem reaction operates under mild conditions, is high yielding, and is broad in scope. Chemoselectivity for olefin reduction is observed, and the methodology is demonstrated in the synthesis of lapatinib analogues and a formal synthesis of (±)-cuspareine. Early insights suggest that the chemoselectivity observed in the reduction step is due to partial poisoning of the catalyst, after step one, thus adding to the power of the one-pot procedure.
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Affiliation(s)
- Rory Devlin
- School of Chemistry and Analytical and Biological Chemistry Research Facility (ABCRF), University College Cork, Cork T12 YN60, Ireland
| | - David J Jones
- School of Chemistry and Analytical and Biological Chemistry Research Facility (ABCRF), University College Cork, Cork T12 YN60, Ireland
| | - Gerard P McGlacken
- School of Chemistry and Analytical and Biological Chemistry Research Facility (ABCRF), University College Cork, Cork T12 YN60, Ireland.,Synthesis and Solid State Pharmaceutical Centre (SSPC), University College Cork, Cork T12 YN60, Ireland
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3
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Sproß J, Muck A, Gröger H. Detection and fragmentation of doubly charged peptide ions in MALDI-Q-TOF-MS by ion mobility spectrometry for improved protein identification. Anal Bioanal Chem 2019; 411:6275-6285. [PMID: 30868190 DOI: 10.1007/s00216-019-01578-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Revised: 11/22/2018] [Accepted: 01/04/2019] [Indexed: 01/17/2023]
Abstract
Today, bottom-up protein identification in MALDI-MS is based on employing singly charged peptide ions, which are predominantly formed in the ionization process. However, peptide mass fingerprinting (PMF) with subsequent tandem MS confirmation using these peptide ions is often hampered due to the lower quality of fragment ion mass spectra caused by the higher collision energy necessary for fragmenting singly protonated peptides. Accordingly, peptide ions of higher charge states would be of high interest for analytical purposes, but they are usually not detected in MALDI-MS experiments as they overlap with singly charged matrix clusters and peptide ions. However, when utilizing ion mobility spectrometry (IMS), doubly charged peptide ions can be actively used by separating them from the singly protonated peptides, visualized, and selectively targeted for tandem MS experiments. The generated peptide fragment ion spectra can be used for a more confident protein identification using PMF with tandem MS confirmation, as most doubly protonated peptide ions yield fragment ion mass spectra of higher quality compared to tandem mass spectra of the corresponding singly protonated precursor ions. Mascot protein scores can be increased by approximately 50% when using tandem mass spectra of doubly charged peptide ions, with ion scores up to six times higher compared with ion scores of tandem mass spectra from singly charged precursors.
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Affiliation(s)
- Jens Sproß
- Industrial Organic Chemistry and Biotechnology, Faculty of Chemistry, Bielefeld University, Universitätsstr. 25, 33615, Bielefeld, Germany.
| | | | - Harald Gröger
- Industrial Organic Chemistry and Biotechnology, Faculty of Chemistry, Bielefeld University, Universitätsstr. 25, 33615, Bielefeld, Germany.
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Wang Y, Bartlett MJ, Denard CA, Hartwig JF, Zhao H. Combining Rh-Catalyzed Diazocoupling and Enzymatic Reduction To Efficiently Synthesize Enantioenriched 2-Substituted Succinate Derivatives. ACS Catal 2017. [DOI: 10.1021/acscatal.7b00254] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Yajie Wang
- Department
of Chemical and Biomolecular Engineering, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801, United States
| | - Mark J. Bartlett
- Department
of Chemistry, University of California-Berkeley, Berkeley, California 94720, United States
| | - Carl A. Denard
- Department
of Chemical and Biomolecular Engineering, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801, United States
| | - John F. Hartwig
- Department
of Chemistry, University of California-Berkeley, Berkeley, California 94720, United States
| | - Huimin Zhao
- Department
of Chemical and Biomolecular Engineering, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801, United States
- Departments
of Chemistry, Biochemistry, and Bioengineering, Carl R. Woese Institute
for Genomic Biology, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801, United States
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5
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Reß T, Hummel W, Hanlon SP, Iding H, Gröger H. The Organic-Synthetic Potential of Recombinant Ene Reductases: Substrate-Scope Evaluation and Process Optimization. ChemCatChem 2015. [DOI: 10.1002/cctc.201402903] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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7
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Toogood HS, Scrutton NS. New developments in 'ene'-reductase catalysed biological hydrogenations. Curr Opin Chem Biol 2014; 19:107-15. [PMID: 24608082 DOI: 10.1016/j.cbpa.2014.01.019] [Citation(s) in RCA: 98] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2013] [Revised: 12/13/2013] [Accepted: 01/30/2014] [Indexed: 01/07/2023]
Abstract
Asymmetric biocatalytic hydrogenations are important reactions performed primarily by members of the Old Yellow Enzyme family. These reactions have great potential in the chemosynthesis of a variety of industrially useful synthons due to the generation of up to two stereogenic centres. In this review, additional enzyme classes capable of asymmetric hydrogenations will be discussed, as will examples of multienzyme cascading reactions. New and improved technology that enhances the commercial viability of biotransformations are included, such as the nicotinamide coenzyme-independent reactions. This review will focus on progress in this field within the last two years, with emphasis on industrial applications of this technology.
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Affiliation(s)
- Helen S Toogood
- Manchester Institute of Biotechnology, Faculty of Life Sciences, University of Manchester, 131 Princess Street, Manchester M1 7DN, UK
| | - Nigel S Scrutton
- Manchester Institute of Biotechnology, Faculty of Life Sciences, University of Manchester, 131 Princess Street, Manchester M1 7DN, UK.
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Nestl BM, Hammer SC, Nebel BA, Hauer B. New generation of biocatalysts for organic synthesis. Angew Chem Int Ed Engl 2014; 53:3070-95. [PMID: 24520044 DOI: 10.1002/anie.201302195] [Citation(s) in RCA: 235] [Impact Index Per Article: 23.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2013] [Indexed: 02/04/2023]
Abstract
The use of enzymes as catalysts for the preparation of novel compounds has received steadily increasing attention over the past few years. High demands are placed on the identification of new biocatalysts for organic synthesis. The catalysis of more ambitious reactions reflects the high expectations of this field of research. Enzymes play an increasingly important role as biocatalysts in the synthesis of key intermediates for the pharmaceutical and chemical industry, and new enzymatic technologies and processes have been established. Enzymes are an important part of the spectrum of catalysts available for synthetic chemistry. The advantages and applications of the most recent and attractive biocatalysts--reductases, transaminases, ammonia lyases, epoxide hydrolases, and dehalogenases--will be discussed herein and exemplified by the syntheses of interesting compounds.
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Affiliation(s)
- Bettina M Nestl
- Technische Biochemie, Universität Stuttgart, Stuttgart (Germany)
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9
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Nestl BM, Hammer SC, Nebel BA, Hauer B. Biokatalysatoren für die organische Synthese - die neue Generation. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201302195] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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10
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Egusa S, Goto M, Kitaoka T. One-step synthesis of cellulose from cellobiose via protic acid-assisted enzymatic dehydration in aprotic organic media. Biomacromolecules 2012; 13:2716-22. [PMID: 22871106 DOI: 10.1021/bm3006775] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Direct and efficient enzymatic synthesis of long-chain cellulose from cellobiose in its original form was successfully achieved via the combination of a surfactant-enveloped enzyme (SEE) and a protic acid in an aprotic organic solvent, lithium chloride/N,N-dimethylacetamide system. The SEE biocatalyst was prepared by protecting the surface of cellulase with the nonionic surfactant dioleyl-N-D-glucona-L-glutamate for keeping its enzymatic activity in nonaqueous media. Fourier transform infrared and nuclear magnetic resonance analyses elucidated the successful synthesis of cellulose, β-1,4-linked D-glucopyranose polymer, through the reverse hydrolysis of cellobiose. By using protic acid cocatalysts, a degree of polymerization of as-synthesized cellulose reached more than 120, in a ca. 26% conversion, which was 5 times higher than that obtained in an acid-free SEE system. A novel-concept biocatalysis, i.e., a protic acid-assisted SEE-mediated reaction, enables a facile, one-step chain elongation of carbohydrates without any activation via multistep organic chemistry, and can provide potential applications in the functional design of glycomaterials.
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Affiliation(s)
- Shizuka Egusa
- Department of Agro-Environmental Sciences, Graduate School of Bioresource and Bioenvironmental Sciences, and Biotron Application Center, Kyushu University, 6-10-1 Hakozaki, Fukuoka, 812-8581 Japan
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Pietruszka J, Schölzel M. Ene Reductase-Catalysed Synthesis of (R)-Profen Derivatives. Adv Synth Catal 2012. [DOI: 10.1002/adsc.201100743] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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12
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Su KJ, Pačar M, Mieusset JL, Arion VB, Brinker UH. Quest for Even Higher Stabilized Foiled Carbenes. J Org Chem 2011; 76:7491-6. [DOI: 10.1021/jo201308a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Kuan-Jen Su
- Chair of Physical Organic and Structural Chemistry, Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, A-1090 Vienna, Austria
| | - Mirjana Pačar
- Chair of Physical Organic and Structural Chemistry, Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, A-1090 Vienna, Austria
| | - Jean-Luc Mieusset
- Chair of Physical Organic and Structural Chemistry, Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, A-1090 Vienna, Austria
| | - Vladimir B. Arion
- Institute of Inorganic Chemistry, University of Vienna, Währinger Strasse 42, A-1090 Vienna, Austria
| | - Udo H. Brinker
- Chair of Physical Organic and Structural Chemistry, Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, A-1090 Vienna, Austria
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Lu J, Toy PH. Tandem One-Pot Wittig/Reductive Aldol Reactions in which the Waste from One Process Catalyzes a Subsequent Reaction. Chem Asian J 2011; 6:2251-4. [DOI: 10.1002/asia.201100296] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2011] [Indexed: 11/07/2022]
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