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Schnepel C, Moritzer AC, Gäfe S, Montua N, Minges H, Nieß A, Niemann HH, Sewald N. Enzymatic Late-Stage Halogenation of Peptides. Chembiochem 2023; 24:e202200569. [PMID: 36259362 PMCID: PMC10099709 DOI: 10.1002/cbic.202200569] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 10/18/2022] [Indexed: 01/05/2023]
Abstract
The late-stage site-selective derivatisation of peptides has many potential applications in structure-activity relationship studies and postsynthetic modification or conjugation of bioactive compounds. The development of orthogonal methods for C-H functionalisation is crucial for such peptide derivatisation. Among them, biocatalytic methods are increasingly attracting attention. Tryptophan halogenases emerged as valuable catalysts to functionalise tryptophan (Trp), while direct enzyme-catalysed halogenation of synthetic peptides is yet unprecedented. Here, it is reported that the Trp 6-halogenase Thal accepts a wide range of amides and peptides containing a Trp moiety. Increasing the sequence length and reaction optimisation made bromination of pentapeptides feasible with good turnovers and a broad sequence scope, while regioselectivity turned out to be sequence dependent. Comparison of X-ray single crystal structures of Thal in complex with d-Trp and a dipeptide revealed a significantly altered binding mode for the peptide. The viability of this bioorthogonal approach was exemplified by halogenation of a cyclic RGD peptide.
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Affiliation(s)
- Christian Schnepel
- Organische und Bioorganische Chemie, Fakultät für Chemie, Universität Bielefeld, Universitätsstraße 25, 33615, Bielefeld, Germany.,Present address: Department of Chemistry, Manchester Institute of Biotechnology, The University of Manchester, 131 Princess Street, Manchester, M1 7DN, UK
| | - Ann-Christin Moritzer
- Strukturbiochemie, Fakultät für Chemie, Universität Bielefeld, Universitätsstraße 25, 33615, Bielefeld, Germany
| | - Simon Gäfe
- Strukturbiochemie, Fakultät für Chemie, Universität Bielefeld, Universitätsstraße 25, 33615, Bielefeld, Germany
| | - Nicolai Montua
- Organische und Bioorganische Chemie, Fakultät für Chemie, Universität Bielefeld, Universitätsstraße 25, 33615, Bielefeld, Germany
| | - Hannah Minges
- Organische und Bioorganische Chemie, Fakultät für Chemie, Universität Bielefeld, Universitätsstraße 25, 33615, Bielefeld, Germany
| | - Anke Nieß
- Organische und Bioorganische Chemie, Fakultät für Chemie, Universität Bielefeld, Universitätsstraße 25, 33615, Bielefeld, Germany
| | - Hartmut H Niemann
- Strukturbiochemie, Fakultät für Chemie, Universität Bielefeld, Universitätsstraße 25, 33615, Bielefeld, Germany
| | - Norbert Sewald
- Organische und Bioorganische Chemie, Fakultät für Chemie, Universität Bielefeld, Universitätsstraße 25, 33615, Bielefeld, Germany
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Janson N, Heinks T, Beuel T, Alam S, Höhne M, Bornscheuer UT, Fischer von Mollard G, Sewald N. Efficient Site‐Selective Immobilization of Aldehyde‐Tagged Peptides and Proteins by Knoevenagel Ligation. ChemCatChem 2021. [DOI: 10.1002/cctc.202101485] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Nils Janson
- Faculty of Chemistry Organic and Bioorganic Chemistry Bielefeld University Universitätsstraße 25 33615 Bielefeld Germany
| | - Tobias Heinks
- TFaculty of Chemistry, Biochemistry Bielefeld University Universitätsstraße 25 33615 Bielefeld Germany
| | - Tobias Beuel
- TFaculty of Chemistry, Biochemistry Bielefeld University Universitätsstraße 25 33615 Bielefeld Germany
| | - Sarfaraz Alam
- TFaculty of Chemistry, Biochemistry Bielefeld University Universitätsstraße 25 33615 Bielefeld Germany
| | - Matthias Höhne
- Institute of Biochemistry Greifswald University Felix-Hausdorff-Straße 4 17487 Greifswald Germay
| | - Uwe T. Bornscheuer
- Institute of Biochemistry Greifswald University Felix-Hausdorff-Straße 4 17487 Greifswald Germay
| | | | - Norbert Sewald
- Faculty of Chemistry Organic and Bioorganic Chemistry Bielefeld University Universitätsstraße 25 33615 Bielefeld Germany
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Janson N, Krüger T, Karsten L, Boschanski M, Dierks T, Müller KM, Sewald N. Bifunctional Reagents for Formylglycine Conjugation: Pitfalls and Breakthroughs. Chembiochem 2020; 21:3580-3593. [PMID: 32767537 PMCID: PMC7756428 DOI: 10.1002/cbic.202000416] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 08/05/2020] [Indexed: 12/28/2022]
Abstract
Formylglycine-generating enzymes specifically oxidize cysteine within the consensus sequence CxPxR to Cα -formylglycine (FGly). This noncanonical electrophilic amino acid can subsequently be addressed selectively by bioorthogonal hydrazino-iso-Pictet-Spengler (HIPS) or Knoevenagel ligation to attach payloads like fluorophores or drugs to proteins to obtain a defined payload-to-protein ratio. However, the disadvantages of these conjugation techniques include the need for a large excess of conjugation building block, comparably low reaction rates and limited stability of FGly-containing proteins. Therefore, functionalized clickable HIPS and tandem Knoevenagel building blocks were synthesized, conjugated to small proteins (DARPins) and subsequently linked to strained alkyne-containing payloads for protein labeling. This procedure allowed the selective bioconjugation of one or two DBCO-carrying payloads with nearly stoichiometric amounts at low concentrations. Furthermore, an azide-modified tandem Knoevenagel building block enabled the synthesis of branched PEG linkers and the conjugation of two fluorophores, resulting in an improved signal-to-noise ratio in live-cell fluorescence-imaging experiments targeting the EGF receptor.
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Affiliation(s)
- Nils Janson
- Faculty of ChemistryOrganic and Bioorganic ChemistryBielefeld UniversityUniversitätsstraße 2533615BielefeldGermany
| | - Tobias Krüger
- Faculty of ChemistryOrganic and Bioorganic ChemistryBielefeld UniversityUniversitätsstraße 2533615BielefeldGermany
| | - Lennard Karsten
- Cellular and Molecular BiotechnologyBielefeld UniversityUniversitätsstraße 2533615BielefeldGermany
| | - Mareile Boschanski
- Faculty of ChemistryBiochemistryBielefeld UniversityUniversitätsstraße 2533615BielefeldGermany
| | - Thomas Dierks
- Faculty of ChemistryBiochemistryBielefeld UniversityUniversitätsstraße 2533615BielefeldGermany
| | - Kristian M. Müller
- Cellular and Molecular BiotechnologyBielefeld UniversityUniversitätsstraße 2533615BielefeldGermany
| | - Norbert Sewald
- Faculty of ChemistryOrganic and Bioorganic ChemistryBielefeld UniversityUniversitätsstraße 2533615BielefeldGermany
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Krüger T, Weiland S, Boschanski M, Sinha PK, Falck G, Müller KM, Dierks T, Sewald N. Conversion of Serine‐Type Aldehyde Tags by the Radical SAM Protein AtsB from
Methanosarcina mazei. Chembiochem 2019; 20:2074-2078. [DOI: 10.1002/cbic.201900322] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Indexed: 01/09/2023]
Affiliation(s)
- Tobias Krüger
- Organische und Bioorganische ChemieFakultät für ChemieUniversität Bielefeld Universitätsstrasse 25 33615 Bielefeld Germany
| | - Stefanie Weiland
- Biochemie IFakultät für ChemieUniversität Bielefeld Universitätsstrasse 25 33615 Bielefeld Germany
| | - Mareile Boschanski
- Biochemie IFakultät für ChemieUniversität Bielefeld Universitätsstrasse 25 33615 Bielefeld Germany
| | - Prem Kumar Sinha
- Biochemie IFakultät für ChemieUniversität Bielefeld Universitätsstrasse 25 33615 Bielefeld Germany
| | - Georg Falck
- Zelluläre und Molekulare BiotechnologieTechnische FakultätUniversität Bielefeld Universitätsstrasse 25 33615 Bielefeld Germany
| | - Kristian M. Müller
- Zelluläre und Molekulare BiotechnologieTechnische FakultätUniversität Bielefeld Universitätsstrasse 25 33615 Bielefeld Germany
| | - Thomas Dierks
- Biochemie IFakultät für ChemieUniversität Bielefeld Universitätsstrasse 25 33615 Bielefeld Germany
| | - Norbert Sewald
- Organische und Bioorganische ChemieFakultät für ChemieUniversität Bielefeld Universitätsstrasse 25 33615 Bielefeld Germany
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