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Chen J, Brea RJ, Fracassi A, Cho CJ, Wong AM, Salvador-Castell M, Sinha SK, Budin I, Devaraj NK. Rapid Formation of Non-canonical Phospholipid Membranes by Chemoselective Amide-Forming Ligations with Hydroxylamines. Angew Chem Int Ed Engl 2024; 63:e202311635. [PMID: 37919232 PMCID: PMC11179435 DOI: 10.1002/anie.202311635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Revised: 10/30/2023] [Accepted: 11/02/2023] [Indexed: 11/04/2023]
Abstract
There has been increasing interest in methods to generate synthetic lipid membranes as key constituents of artificial cells or to develop new tools for remodeling membranes in living cells. However, the biosynthesis of phospholipids involves elaborate enzymatic pathways that are challenging to reconstitute in vitro. An alternative approach is to use chemical reactions to non-enzymatically generate natural or non-canonical phospholipids de novo. Previous reports have shown that synthetic lipid membranes can be formed in situ using various ligation chemistries, but these methods lack biocompatibility and/or suffer from slow kinetics at physiological pH. Thus, it would be valuable to develop chemoselective strategies for synthesizing phospholipids from water-soluble precursors that are compatible with synthetic or living cells Here, we demonstrate that amide-forming ligations between lipid precursors bearing hydroxylamines and α-ketoacids (KAs) or potassium acyltrifluoroborates (KATs) can be used to prepare non-canonical phospholipids at physiological pH conditions. The generated amide-linked phospholipids spontaneously self-assemble into cell-like micron-sized vesicles similar to natural phospholipid membranes. We show that lipid synthesis using KAT ligation proceeds extremely rapidly, and the high selectivity and biocompatibility of the approach facilitates the in situ synthesis of phospholipids and associated membranes in living cells.
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Affiliation(s)
- Jiyue Chen
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, Natural Sciences Building, La Jolla, CA 92093, USA
| | - Roberto J Brea
- Biomimetic Membrane Chemistry (BioMemChem) Group, CICA-Centro Interdisciplinar de Química e Bioloxía, Universidade da Coruña, Rúa As Carballeiras, 15701, A Coruña, Spain
| | - Alessandro Fracassi
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, Natural Sciences Building, La Jolla, CA 92093, USA
| | - Christy J Cho
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, Natural Sciences Building, La Jolla, CA 92093, USA
| | - Adrian M Wong
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, Natural Sciences Building, La Jolla, CA 92093, USA
| | - Marta Salvador-Castell
- Department of Physics, University of California, San Diego, 9500 Gilman Drive, Building: Mayer Hall Addition 4561, La Jolla, CA 92093, USA
| | - Sunil K Sinha
- Department of Physics, University of California, San Diego, 9500 Gilman Drive, Building: Mayer Hall Addition 4561, La Jolla, CA 92093, USA
| | - Itay Budin
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, Natural Sciences Building, La Jolla, CA 92093, USA
| | - Neal K Devaraj
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, Natural Sciences Building, La Jolla, CA 92093, USA
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2
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Rademann J, Ahsanullah A, Hassan A, Ansari FL. Integration of C-Acylation in the Solid-Phase Synthesis of Peptides and Peptidomimetics Employing Meldrum’s Acid, Phosphorus, and Sulfur Ylides. SYNTHESIS-STUTTGART 2022. [DOI: 10.1055/a-1667-3648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
AbstractThe modification of native peptides to peptidomimetics is an important goal in medicinal chemistry and requires, in many cases, the integration of C-acylation steps involving amino acids with classical peptide synthesis. Many classical C-acylation protocols involving Claisen condensations and the use of ylides are not compatible with peptide synthesis, mostly due to the requirements for strong bases leading to epimerization or deprotection of peptides. Meldrum’s acid as well as several specific phosphorus and sulfur ylides, however, are acidic enough to provide reactive C-nucleophiles under mildly basic conditions tolerated during peptide synthesis. This review provides an overview of peptide-compatible C-acylations using Meldrum’s acid and phosphorus and sulfur ylides, and their application in the medicinal chemistry of peptides.1 Introduction2 C-Acylation of Meldrum’s Acid2.1 C-Acylation of Meldrum’s Acid on Solid Phase3 Ylides as Substrates for C-Acylation3.1 C-Acylation of Phosphorus Ylides in Solution Phase3.2 C-Acylation of Solid-Supported Phosphorus Ylides3.3 C-Acylation of Sulfur Ylides3.4 C-Acylation of Solid-Supported Sulfur Ylides4 Miscellaneous Ylides as Acyl Anion Equivalents5 Summary
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Affiliation(s)
- Jörg Rademann
- Institut für Pharmazie, Medizinische Chemie, Freie Universität Berlin
| | | | - Abbas Hassan
- Department of Chemistry, Quaid-i-Azam University
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3
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Lepage ML, Lai S, Peressin N, Hadjerci R, Patrick BO, Perrin DM. Direct Access to MIDA Acylboronates through Mild Oxidation of MIDA Vinylboronates. Angew Chem Int Ed Engl 2017; 56:15257-15261. [DOI: 10.1002/anie.201707125] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Revised: 09/25/2017] [Indexed: 12/14/2022]
Affiliation(s)
- Mathieu L. Lepage
- Chemistry Department; University of British Columbia; 2036 Main Mall Vancouver BC V6T 1Z1 Canada
| | - Samson Lai
- Chemistry Department; University of British Columbia; 2036 Main Mall Vancouver BC V6T 1Z1 Canada
| | - Nicolas Peressin
- Chemistry Department; University of British Columbia; 2036 Main Mall Vancouver BC V6T 1Z1 Canada
| | - Romain Hadjerci
- Chemistry Department; University of British Columbia; 2036 Main Mall Vancouver BC V6T 1Z1 Canada
| | - Brian O. Patrick
- Chemistry Department; University of British Columbia; 2036 Main Mall Vancouver BC V6T 1Z1 Canada
| | - David M. Perrin
- Chemistry Department; University of British Columbia; 2036 Main Mall Vancouver BC V6T 1Z1 Canada
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4
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Lepage ML, Lai S, Peressin N, Hadjerci R, Patrick BO, Perrin DM. Direct Access to MIDA Acylboronates through Mild Oxidation of MIDA Vinylboronates. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201707125] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Mathieu L. Lepage
- Chemistry Department; University of British Columbia; 2036 Main Mall Vancouver BC V6T 1Z1 Canada
| | - Samson Lai
- Chemistry Department; University of British Columbia; 2036 Main Mall Vancouver BC V6T 1Z1 Canada
| | - Nicolas Peressin
- Chemistry Department; University of British Columbia; 2036 Main Mall Vancouver BC V6T 1Z1 Canada
| | - Romain Hadjerci
- Chemistry Department; University of British Columbia; 2036 Main Mall Vancouver BC V6T 1Z1 Canada
| | - Brian O. Patrick
- Chemistry Department; University of British Columbia; 2036 Main Mall Vancouver BC V6T 1Z1 Canada
| | - David M. Perrin
- Chemistry Department; University of British Columbia; 2036 Main Mall Vancouver BC V6T 1Z1 Canada
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5
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Murar CE, Harmand TJ, Bode JW. Improved synthesis of (S)-N-Boc-5-oxaproline for protein synthesis with the α-ketoacid-hydroxylamine (KAHA) ligation. Bioorg Med Chem 2017; 25:4996-5001. [DOI: 10.1016/j.bmc.2017.06.019] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2017] [Revised: 06/06/2017] [Accepted: 06/13/2017] [Indexed: 01/01/2023]
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6
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Patil M. A revised mechanism for the α-ketoacid hydroxylamine amide forming ligations. Org Biomol Chem 2017; 15:416-425. [DOI: 10.1039/c6ob02057g] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The α-ketoacid-hydroxylamine amide-forming (KAHA) ligation reactions were investigated using computational methods to provide improved insights on the mechanism of these reactions.
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Affiliation(s)
- Mahendra Patil
- UM-DAE Centre for Excellence in Basic Sciences
- Health Centre
- University of Mumbai
- Mumbai 400098
- India
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7
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Abstract
The present review offers an overview of nonclassical (e.g., with no pre- or in situ activation of a carboxylic acid partner) approaches for the construction of amide bonds. The review aims to comprehensively discuss relevant work, which was mainly done in the field in the last 20 years. Organization of the data follows a subdivision according to substrate classes: catalytic direct formation of amides from carboxylic and amines ( section 2 ); the use of carboxylic acid surrogates ( section 3 ); and the use of amine surrogates ( section 4 ). The ligation strategies (NCL, Staudinger, KAHA, KATs, etc.) that could involve both carboxylic acid and amine surrogates are treated separately in section 5 .
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Affiliation(s)
- Renata Marcia de Figueiredo
- Institut Charles Gerhardt de Montpellier (ICGM), UMR 5253-CNRS-UM-ENSCM, Ecole Nationale Supérieure de Chimie , 8 rue de l'Ecole Normale, 34296 Montpellier Cedex 5, France
| | - Jean-Simon Suppo
- Institut Charles Gerhardt de Montpellier (ICGM), UMR 5253-CNRS-UM-ENSCM, Ecole Nationale Supérieure de Chimie , 8 rue de l'Ecole Normale, 34296 Montpellier Cedex 5, France
| | - Jean-Marc Campagne
- Institut Charles Gerhardt de Montpellier (ICGM), UMR 5253-CNRS-UM-ENSCM, Ecole Nationale Supérieure de Chimie , 8 rue de l'Ecole Normale, 34296 Montpellier Cedex 5, France
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9
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Roberts AG, Johnston EV, Shieh JH, Sondey JP, Hendrickson RC, Moore MAS, Danishefsky SJ. Fully Synthetic Granulocyte Colony-Stimulating Factor Enabled by Isonitrile-Mediated Coupling of Large, Side-Chain-Unprotected Peptides. J Am Chem Soc 2015; 137:13167-75. [PMID: 26401918 PMCID: PMC4617663 DOI: 10.1021/jacs.5b08754] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Human granulocyte colony-stimulating factor (G-CSF) is an endogenous glycoprotein involved in hematopoiesis. Natively glycosylated and nonglycosylated recombinant forms, lenograstim and filgrastim, respectively, are used clinically to manage neutropenia in patients undergoing chemotherapeutic treatment. Despite their comparable therapeutic potential, the purpose of O-linked glycosylation at Thr133 remains a subject of controversy. In light of this, we have developed a synthetic platform to prepare G-CSF aglycone with the goal of enabling access to native and designed glycoforms with site-selectivity and glycan homogeneity. To address the synthesis of a relatively large, aggregation-prone sequence, we advanced an isonitrile-mediated ligation method. The chemoselective activation and coupling of C-terminal peptidyl Gly thioacids with the N-terminus of an unprotected peptide provide ligated peptides directly in a manner complementary to that with conventional native chemical ligation-desulfurization strategies. Herein, we describe the details and application of this method as it enabled the convergent total synthesis of G-CSF aglycone.
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Affiliation(s)
- Andrew G. Roberts
- Laboratory for Bio-Organic Chemistry, Sloan Kettering Institute (SKI) for Cancer Research, New York, New York 10065, United States
- Chemical Biology Program, Sloan Kettering Institute (SKI) for Cancer Research, New York, New York 10065, United States
| | - Eric V. Johnston
- Laboratory for Bio-Organic Chemistry, Sloan Kettering Institute (SKI) for Cancer Research, New York, New York 10065, United States
- Chemical Biology Program, Sloan Kettering Institute (SKI) for Cancer Research, New York, New York 10065, United States
| | - Jae-Hung Shieh
- Cell Biology Program, Sloan Kettering Institute (SKI) for Cancer Research, New York, New York 10065, United States
| | - Joseph P. Sondey
- Chemical Biology Program, Sloan Kettering Institute (SKI) for Cancer Research, New York, New York 10065, United States
| | - Ronald C. Hendrickson
- Chemical Biology Program, Sloan Kettering Institute (SKI) for Cancer Research, New York, New York 10065, United States
| | - Malcolm A. S. Moore
- Cell Biology Program, Sloan Kettering Institute (SKI) for Cancer Research, New York, New York 10065, United States
| | - Samuel J. Danishefsky
- Laboratory for Bio-Organic Chemistry, Sloan Kettering Institute (SKI) for Cancer Research, New York, New York 10065, United States
- Chemical Biology Program, Sloan Kettering Institute (SKI) for Cancer Research, New York, New York 10065, United States
- Cell Biology Program, Sloan Kettering Institute (SKI) for Cancer Research, New York, New York 10065, United States
- Department of Chemistry, Columbia University, New York, New York 10027, United States
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10
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He C, Kulkarni SS, Thuaud F, Bode JW. Chemical Synthesis of the 20 kDa Heme Protein Nitrophorin 4 by α-Ketoacid-Hydroxylamine (KAHA) Ligation. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201505379] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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11
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He C, Kulkarni SS, Thuaud F, Bode JW. Chemical Synthesis of the 20 kDa Heme Protein Nitrophorin 4 by α‐Ketoacid‐Hydroxylamine (KAHA) Ligation. Angew Chem Int Ed Engl 2015; 54:12996-3001. [DOI: 10.1002/anie.201505379] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2015] [Revised: 07/27/2015] [Indexed: 11/09/2022]
Affiliation(s)
- Chunmao He
- Institute of Transformative Bio‐Molecules (WPI‐ITbM), Nagoya University, Chikusa, Nagoya 464‐8602 (Japan)
| | - Sameer S. Kulkarni
- Institute of Transformative Bio‐Molecules (WPI‐ITbM), Nagoya University, Chikusa, Nagoya 464‐8602 (Japan)
| | - Frédéric Thuaud
- Institute of Transformative Bio‐Molecules (WPI‐ITbM), Nagoya University, Chikusa, Nagoya 464‐8602 (Japan)
- Laboratorium für Organische Chemie, ETH Zurich, 8093 Zurich (Switzerland) http://www.bode.ethz.ch/
| | - Jeffrey W. Bode
- Institute of Transformative Bio‐Molecules (WPI‐ITbM), Nagoya University, Chikusa, Nagoya 464‐8602 (Japan)
- Laboratorium für Organische Chemie, ETH Zurich, 8093 Zurich (Switzerland) http://www.bode.ethz.ch/
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12
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Chen M, Heimer P, Imhof D. Synthetic strategies for polypeptides and proteins by chemical ligation. Amino Acids 2015; 47:1283-99. [DOI: 10.1007/s00726-015-1982-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2015] [Accepted: 04/02/2015] [Indexed: 11/30/2022]
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13
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Harmand TJR, Murar CE, Bode JW. New chemistries for chemoselective peptide ligations and the total synthesis of proteins. Curr Opin Chem Biol 2014; 22:115-21. [DOI: 10.1016/j.cbpa.2014.09.032] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Revised: 09/22/2014] [Accepted: 09/23/2014] [Indexed: 01/10/2023]
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14
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Wucherpfennig TG, Pattabiraman VR, Limberg FRP, Ruiz-Rodríguez J, Bode JW. Traceless Preparation of C-Terminal α-Ketoacids for Chemical Protein Synthesis by α-Ketoacid-Hydroxylamine Ligation: Synthesis of SUMO2/3. Angew Chem Int Ed Engl 2014; 53:12248-52. [DOI: 10.1002/anie.201407014] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2014] [Indexed: 12/16/2022]
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15
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Wucherpfennig TG, Pattabiraman VR, Limberg FRP, Ruiz-Rodríguez J, Bode JW. Spurlose Herstellung C-terminaler α-Ketosäuren zur chemischen Proteinsynthese mittels α-Ketoäure-Hydroxylamin-Ligation: Synthese von SUMO2/3. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201407014] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Schwieter KE, Shen B, Shackleford JP, Leighty MW, Johnston JN. Umpolung amide synthesis using substoichiometric N-iodosuccinimide (NIS) and oxygen as a terminal oxidant. Org Lett 2014; 16:4714-7. [PMID: 25198239 PMCID: PMC4168777 DOI: 10.1021/ol502089v] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
![]()
Umpolung Amide Synthesis
(UmAS) provides direct access to amides
from an α-bromo nitroalkane and an amine. Based on its mechanistic
bifurcation after convergent C–N bond formation, depending
on the absence or presence of oxygen, UmAS using substoichiometric N-iodosuccinimide (NIS) under aerobic conditions
has been developed. In combination with the enantioselective preparation
of α-bromo nitroalkane donors, this protocol realizes the goal
of enantioselective α-amino amide and peptide synthesis based
solely on catalytic methods.
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Affiliation(s)
- Kenneth E Schwieter
- Department of Chemistry and Vanderbilt Institute of Chemical Biology, Vanderbilt University , Nashville, Tennessee 37235, United States
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17
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Liu Y, Ren L, Ge L, Cui Q, Cao X, Hou Y, Bai F, Bai G. A strategy for fusion expression and preparation of functional glucagon-like peptide-1 (GLP-1) analogue by introducing an enterokinase cleavage site. Biotechnol Lett 2014; 36:1675-80. [PMID: 24737080 DOI: 10.1007/s10529-014-1526-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2014] [Accepted: 04/03/2014] [Indexed: 12/19/2022]
Abstract
KGLP-1, a 31-amino acid glucagon-like peptide-1 (GLP-1) analogue, has a great therapeutic potential for anti-diabetes. In this work, a strategy for expression and purification of functional KGLP-1 peptide has been established. KGLP-1 cDNA was fused with glutathione S-transferase (GST), with an enterokinase cleavage site in the fusion junction. The recombinant fusion protein GST-KGLP-1 was affinity purified via the GST-tag, and then digested with enterokinase. The resulting GST part as well as the enzymes were eliminated by ultra-filtration followed by size exclusion chromatograph. The yield of purified KGLP-1 was approximately 12.1 mg/L, with purity of 96.18 %. The recombinant KGLP-1 was shown to have similar bioactivity as native GLP-1 when evaluated in a Chinese hamster ovary cell line expressing a GLP-1 receptor-egfp reporter gene.
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Affiliation(s)
- Yang Liu
- College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, 94 Weijin Road, Tianjin, 300071, People's Republic of China,
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18
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Rohrbacher F, Wucherpfennig TG, Bode JW. Chemical Protein Synthesis with the KAHA Ligation. Top Curr Chem (Cham) 2014; 363:1-31. [PMID: 25761549 DOI: 10.1007/128_2014_597] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Since the first report of the chemoselective amide bond forming reaction between α-ketoacids and hydroxylamines in 2006, the KAHA (α-ketoacid-hydroxylamine) ligation has advanced to a useful tool for the routine synthesis of small to medium sized proteins and cyclic peptides. In this chapter we introduce the concept of KAHA ligation starting with the synthesis and properties of hydroxylamines and α-ketoacids, methods for their incorporation into peptides, and give an insight into the mechanism of the KAHA ligation. We cover important improvements including sequential ligations with 5-oxaproline, traceless synthesis of peptide α-ketoacids and show their application in chemical protein synthesis and cyclic peptide synthesis. Recent developments of the KAT (potassium acyl trifluoroborate) ligation and its application as fast and chemoselective bioconjugation method are described and an outlook on ongoing work and possible future developments is given at the end of the chapter.
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Affiliation(s)
- Florian Rohrbacher
- Laboratorium für Organische Chemie, Department of Chemistry and Applied Biosciences, ETH Zürich, 8093, Zürich, Switzerland
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19
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Zhang Y, Li T, Li X. Synthesis of human growth hormone-releasing hormone via three-fragment serine/threonine ligation (STL). Org Biomol Chem 2013; 11:5584-7. [DOI: 10.1039/c3ob41027g] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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20
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Chiang YL, Russak JA, Carrillo N, Bode JW. Synthesis of Enantiomerically Pure Isoxazolidine Monomers for the Preparation ofβ3-Oligopeptides by Iterativeα-Keto AcidHydroxylamine (KAHA) Ligations. Helv Chim Acta 2012. [DOI: 10.1002/hlca.201200484] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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21
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Ogunkoya AO, Pattabiraman VR, Bode JW. Sequential α-ketoacid-hydroxylamine (KAHA) ligations: synthesis of C-terminal variants of the modifier protein UFM1. Angew Chem Int Ed Engl 2012; 51:9693-7. [PMID: 22915333 DOI: 10.1002/anie.201204144] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2012] [Indexed: 12/17/2022]
Affiliation(s)
- Ayodele O Ogunkoya
- Laboratorium für Organische Chemie, Department of Chemistry and Applied Biosciences, ETH Zürich, Wolfgang Pauli Strasse 10, 8093 Zürich, Switzerland
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22
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Ogunkoya AO, Pattabiraman VR, Bode JW. Sequentielle α-Ketosäurehydroxylamin(KAHA)-Ligationen: Synthese C-terminaler Varianten des Modifikationsproteins UFM1. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201204144] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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23
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Raimondi W, Bonne D, Rodriguez J. Asymmetric transformations involving 1,2-dicarbonyl compounds as pronucleophiles. Chem Commun (Camb) 2012; 48:6763-75. [PMID: 22655291 DOI: 10.1039/c2cc30691c] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
This article concentrates on the versatile nucleophilic reactivity of 1,2-dicarbonyl compounds in various asymmetric transformations. Although underexploited in comparison to their 1,3-dicarbonyl homologues, the presence of adjacent multiple reactive centres allows the selection of specific activation modes for enhancing the reactivity of these important ambident pronucleophiles. They can be involved in selective formation of C-C, C-O or C-N bonds leading to various optically active targets in the acyclic and cyclic series including three- to seven-membered ring systems. Recent contributions in the field of biochemical, organometallic and organic catalytic transformations as well as some relevant stoichiometric approaches are discussed from synthetic and mechanistic point of views highlighting some important stereochemical issues.
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Affiliation(s)
- Wilfried Raimondi
- Aix-Marseille Université, UMR CNRS 7313 iSm2, Centre Saint Jérôme, service 531, 13397 Marseille, France
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Pattabiraman VR, Ogunkoya AO, Bode JW. Chemical Protein Synthesis by Chemoselective α-Ketoacid-Hydroxylamine (KAHA) Ligations with 5-Oxaproline. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201200907] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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25
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Pattabiraman VR, Ogunkoya AO, Bode JW. Chemical Protein Synthesis by Chemoselective α-Ketoacid-Hydroxylamine (KAHA) Ligations with 5-Oxaproline. Angew Chem Int Ed Engl 2012; 51:5114-8. [DOI: 10.1002/anie.201200907] [Citation(s) in RCA: 102] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2012] [Indexed: 12/22/2022]
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Fukuzumi T, Ju L, Bode JW. Chemoselective cyclization of unprotected linear peptides by α-ketoacid–hydroxylamine amide-ligation. Org Biomol Chem 2012; 10:5837-44. [DOI: 10.1039/c2ob25129a] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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Abstract
One of the most important reactions in organic chemistry--amide bond formation--is often overlooked as a contemporary challenge because of the widespread occurrence of amides in modern pharmaceuticals and biologically active compounds. But existing methods are reaching their inherent limits, and concerns about their waste and expense are becoming sharper. Novel chemical approaches to amide formation are therefore being developed. Here we review and summarize a new generation of amide-forming reactions that may contribute to solving these problems. We also consider their potential application to current synthetic challenges, including the development of catalytic amide formation, the synthesis of therapeutic peptides and the preparation of modified peptides and proteins.
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Pusterla I, Bode JW. The Mechanism of the α-Ketoacid-Hydroxylamine Amide-Forming Ligation. Angew Chem Int Ed Engl 2011; 51:513-6. [DOI: 10.1002/anie.201107198] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2011] [Indexed: 12/17/2022]
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Pusterla I, Bode JW. The Mechanism of the α-Ketoacid-Hydroxylamine Amide-Forming Ligation. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201107198] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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