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Mamahit YP, Maki Y, Okamoto R, Kajihara Y. Semisynthesis of homogeneous misfolded glycoprotein interleukin-8. Carbohydr Res 2023; 531:108847. [PMID: 37354703 DOI: 10.1016/j.carres.2023.108847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 05/12/2023] [Accepted: 05/16/2023] [Indexed: 06/26/2023]
Abstract
To uncover how cells distinguish between misfolded and correctly-folded glycoproteins, homogeneous misfolded glycoproteins are needed as a probe for analysis of their structure and chemical characteristic nature. In this study, we have synthesized misfolded glycosyl interleukin-8 (IL-8) by combining E. coli expression and chemical synthesis to improve the synthetic efficiency. In order to prepare N-terminal peptide-thioester segment (1-33), we prepared an E. coli expressed peptide and then activated the C-terminal Cys by using an intramolecular N-to-S acyl shift reaction, followed by trans-thioesterification of the Cys-thioester with an external bis(2-sulfanylethyl)amine (SEA). The glycopeptide segment (34-49) was prepared by solid phase peptide synthesis and the C-terminal peptide (50-72) was prepared in E. coli. These peptide and glycopeptide segments were successfully coupled by sequential native chemical ligation. To obtain homogeneous misfolded glycoproteins by shuffling the disulfide bond pattern, folding conditions were optimized to maximize the yield of individual homogeneous misfolded glycoproteins.
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Affiliation(s)
- Yugoviandi P Mamahit
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka, 560-0043, Japan
| | - Yuta Maki
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka, 560-0043, Japan; Forefront Research Center, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka, 560-0043, Japan
| | - Ryo Okamoto
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka, 560-0043, Japan; Forefront Research Center, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka, 560-0043, Japan
| | - Yasuhiro Kajihara
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka, 560-0043, Japan; Forefront Research Center, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka, 560-0043, Japan.
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2
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Okamoto R, Orii R, Shibata H, Maki Y, Tsuda S, Kajihara Y. Regulating Antifreeze Activity through Water: Latent Functions of the Sugars of Antifreeze Glycoprotein Revealed by Total Chemical Synthesis. Chemistry 2023; 29:e202203553. [PMID: 36722034 DOI: 10.1002/chem.202203553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 01/27/2023] [Accepted: 01/27/2023] [Indexed: 02/02/2023]
Abstract
Antifreeze glycoprotein (AFGP), which inhibits the freezing of water, is highly O-glycosylated with a disaccharide, d-Galβ1-3-d-GalNAcα (GalGalNAc). To elucidate the function of the sugar residues for antifreeze activity at the molecular level, we conducted a total chemical synthesis of partially sugar deleted AFGP derivatives, and unnatural forms of AFGPs incorporating glucose (Glc)-type sugars instead of galactose (Gal)-type sugars. These elaborated AFGP derivatives demonstrated that the stereochemistry of each sugar residue on AFGPs precisely correlates with the antifreeze activity. A hydrogen-deuterium exchange experiment using synthetic AFGPs revealed a different dynamic behavior of water around sugar residues depending on the sugar structures. These results indicate that sugar residues on AFGP form a unique dynamic water phase that disturbs the absorbance of water molecules onto the ice surface, thereby inhibiting freezing.
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Affiliation(s)
- Ryo Okamoto
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka, 560-0043, Japan.,Forefront Research Center Department, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka, 560-0043, Japan
| | - Ryo Orii
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka, 560-0043, Japan
| | - Hiroyuki Shibata
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka, 560-0043, Japan
| | - Yuta Maki
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka, 560-0043, Japan.,Forefront Research Center Department, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka, 560-0043, Japan
| | - Sakae Tsuda
- Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST) 2-17-2-1 Tsukisamu-Higashi, Toyohira, Sapporo, Hokkaido, 0628517, Japan
| | - Yasuhiro Kajihara
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka, 560-0043, Japan.,Forefront Research Center Department, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka, 560-0043, Japan
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3
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Mo Z, Lin S, Chen W, He C. Protein Ligation and Labeling Enabled by a C-Terminal Tetracysteine Tag. Angew Chem Int Ed Engl 2022; 61:e202115377. [PMID: 35060269 DOI: 10.1002/anie.202115377] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2021] [Indexed: 01/01/2023]
Abstract
The hydrazinolysis of S-cyanylated peptide provides an alternative way to afford protein α-hydrazide, a key reagent used in native chemical ligation (NCL), without the aid of any inteins or enzymes. The currently used non-selective S-cyanylation, however, allows no other cysteine in the protein besides the one at the cleavage site. Herein, we report a regioselective S-cyanylation and hydrazinolysis strategy achieved via the fusion of a tetracysteine tag to the C-terminal of the protein of interest. We term it tetracysteine enabled protein ligation (TCEPL). While highly selective, the strategy is applicable for proteins expressed as inclusion bodies, and this was showcased by the efficient semi-synthesis of an iron-sulfur protein rubredoxin and the catalytic and hinge domains of matrix metalloprotease-14 (MMP-14) containing 207 amino acid residues. Furthermore, the TCEPL strategy was exploited for protein C-terminal labeling with amino reagents bearing a variety of functional groups, demonstrating its versatility and generality.
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Affiliation(s)
- Zeyuan Mo
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510640, P. R. China
| | - Shaomin Lin
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510640, P. R. China
| | - Wentao Chen
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510640, P. R. China
| | - Chunmao He
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510640, P. R. China
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4
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Mo Z, Lin S, Chen W, He C. Protein Ligation and Labeling Enabled by a C‐Terminal Tetracysteine Tag. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202115377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Zeyuan Mo
- School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510640 P. R. China
| | - Shaomin Lin
- School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510640 P. R. China
| | - Wentao Chen
- School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510640 P. R. China
| | - Chunmao He
- School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510640 P. R. China
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5
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Chio TI, Demestichas BR, Brems BM, Bane SL, Tumey LN. Expanding the Versatility of Microbial Transglutaminase Using α‐Effect Nucleophiles as Noncanonical Substrates. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202001830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Tak Ian Chio
- Department of Chemistry Binghamton University State University of New York 25 Murray Hill Rd Vestal NY 13850 USA
| | - Breanna R. Demestichas
- Department of Chemistry Binghamton University State University of New York 25 Murray Hill Rd Vestal NY 13850 USA
| | - Brittany M. Brems
- Department of Pharmaceutical Sciences Binghamton University State University of New York 96 Corliss Ave Johnson City NY 13790 USA
| | - Susan L. Bane
- Department of Chemistry Binghamton University State University of New York 25 Murray Hill Rd Vestal NY 13850 USA
| | - L. Nathan Tumey
- Department of Pharmaceutical Sciences Binghamton University State University of New York 96 Corliss Ave Johnson City NY 13790 USA
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6
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Chio TI, Demestichas BR, Brems BM, Bane SL, Tumey LN. Expanding the Versatility of Microbial Transglutaminase Using α-Effect Nucleophiles as Noncanonical Substrates. Angew Chem Int Ed Engl 2020; 59:13814-13820. [PMID: 32268004 DOI: 10.1002/anie.202001830] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Revised: 04/03/2020] [Indexed: 12/12/2022]
Abstract
The substrate promiscuity of microbial transglutaminase (mTG) has been exploited in various applications in biotechnology, in particular for the attachment of alkyl amines to glutamine-containing peptides and proteins. Here, we expand the substrate repertoire to include hydrazines, hydrazides, and alkoxyamines, resulting in the formation of isopeptide bonds with varied susceptibilities to hydrolysis or exchange by mTG. Furthermore, we demonstrate that simple unsubstituted hydrazine and dihydrazides can be used to install reactive hydrazide handles onto the side chain of internal glutamine residues. The distinct hydrazide handles can be further coupled with carbonyls, including ortho-carbonylphenylboronic acids, to form site-specific and functional bioconjugates with tunable hydrolytic stability. The extension of the substrate scope of mTG beyond canonical amines thus substantially broadens the versatility of the enzyme, providing a new approach to facilitate novel applications.
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Affiliation(s)
- Tak Ian Chio
- Department of Chemistry, Binghamton University, State University of New York, 25 Murray Hill Rd, Vestal, NY, 13850, USA
| | - Breanna R Demestichas
- Department of Chemistry, Binghamton University, State University of New York, 25 Murray Hill Rd, Vestal, NY, 13850, USA
| | - Brittany M Brems
- Department of Pharmaceutical Sciences, Binghamton University, State University of New York, 96 Corliss Ave, Johnson City, NY, 13790, USA
| | - Susan L Bane
- Department of Chemistry, Binghamton University, State University of New York, 25 Murray Hill Rd, Vestal, NY, 13850, USA
| | - L Nathan Tumey
- Department of Pharmaceutical Sciences, Binghamton University, State University of New York, 96 Corliss Ave, Johnson City, NY, 13790, USA
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7
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Liu J, Ekanayake O, Santoleri D, Walker K, Rozovsky S. Efficient Generation of Hydrazides in Proteins by RadA Split Intein. Chembiochem 2020; 21:346-352. [PMID: 31265209 DOI: 10.1002/cbic.201900160] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Revised: 06/30/2019] [Indexed: 12/27/2022]
Abstract
Protein C-terminal hydrazides are useful for bioconjugation and construction of proteins from multiple fragments through native chemical ligation. To generate C-terminal hydrazides in proteins, an efficient intein-based preparation method has been developed by using thiols and hydrazine to accelerate the formation of the transient thioester intermediate and subsequent hydrazinolysis. This approach not only increases the yield, but also improves biocompatibility. The scope of the method has been expanded by employing Pyrococcus horikoshii RadA split intein, which can accommodate a broad range of extein residues before the site of cleavage. The use of split RadA minimizes premature intein N cleavage in vivo and offers control over the initiation of the intein N cleavage reaction. It is expected that this versatile preparation method will expand the utilization of protein C-terminal hydrazides in protein preparation and modification.
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Affiliation(s)
- Jun Liu
- Department of Chemistry and Biochemistry, University of Delaware, Newark, DE, 19716, USA.,Department of Pharmaceutical Chemistry, University of California San Francisco, 555 Mission Bay Boulevard South, San Francisco, CA, 94158, USA
| | - Oshini Ekanayake
- Department of Chemistry and Biochemistry, University of Delaware, Newark, DE, 19716, USA
| | - Dominic Santoleri
- Department of Chemistry and Biochemistry, University of Delaware, Newark, DE, 19716, USA.,Department of Biochemistry and Molecular Biophysics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Kelsi Walker
- Department of Chemistry and Biochemistry, University of Delaware, Newark, DE, 19716, USA
| | - Sharon Rozovsky
- Department of Chemistry and Biochemistry, University of Delaware, Newark, DE, 19716, USA
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8
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Tan X, Bai J, Ding S, Ren Y, Hong D, Mei Z, Li YM. Semi-synthesis of Ubiquitin-propargylamide for identifying deubiquitinase targeting inhibitors. CHINESE CHEM LETT 2019. [DOI: 10.1016/j.cclet.2018.09.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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9
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Pan M, Zheng Q, Ding S, Zhang L, Qu Q, Wang T, Hong D, Ren Y, Liang L, Chen C, Mei Z, Liu L. Chemical Protein Synthesis Enabled Mechanistic Studies on the Molecular Recognition of K27‐linked Ubiquitin Chains. Angew Chem Int Ed Engl 2019; 58:2627-2631. [DOI: 10.1002/anie.201810814] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Revised: 11/20/2018] [Indexed: 12/18/2022]
Affiliation(s)
- Man Pan
- Tsinghua-Peking Center for Life SciencesMOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical BiologyCenter for Synthetic and Systems BiologyDepartment of ChemistryTsinghua University Beijing 100084 China
- State Key Laboratory of Chemical OncogenomicsKey Laboratory of Chemical Biologythe Graduate School at ShenzenTsinghua University Shenzen Guangdong 518055 China
| | - Qingyun Zheng
- Tsinghua-Peking Center for Life SciencesMOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical BiologyCenter for Synthetic and Systems BiologyDepartment of ChemistryTsinghua University Beijing 100084 China
| | - Shan Ding
- Biotechnology Research InstituteChinese Academy of Agricultural Science Beijing 100081 China
| | - Lujia Zhang
- Beijing Advanced Innovation Center for Structural BiologySchool of Life SciencesTsinghua University Beijing 100084 China
| | - Qian Qu
- Tsinghua-Peking Center for Life SciencesMOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical BiologyCenter for Synthetic and Systems BiologyDepartment of ChemistryTsinghua University Beijing 100084 China
| | - Tian Wang
- Tsinghua-Peking Center for Life SciencesMOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical BiologyCenter for Synthetic and Systems BiologyDepartment of ChemistryTsinghua University Beijing 100084 China
| | - Danning Hong
- Biotechnology Research InstituteChinese Academy of Agricultural Science Beijing 100081 China
| | - Yujing Ren
- Biotechnology Research InstituteChinese Academy of Agricultural Science Beijing 100081 China
| | - Lujun Liang
- Tsinghua-Peking Center for Life SciencesMOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical BiologyCenter for Synthetic and Systems BiologyDepartment of ChemistryTsinghua University Beijing 100084 China
| | - Chunlai Chen
- Beijing Advanced Innovation Center for Structural BiologySchool of Life SciencesTsinghua University Beijing 100084 China
| | - Ziqing Mei
- Biotechnology Research InstituteChinese Academy of Agricultural Science Beijing 100081 China
| | - Lei Liu
- Tsinghua-Peking Center for Life SciencesMOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical BiologyCenter for Synthetic and Systems BiologyDepartment of ChemistryTsinghua University Beijing 100084 China
- State Key Laboratory of Chemical OncogenomicsKey Laboratory of Chemical Biologythe Graduate School at ShenzenTsinghua University Shenzen Guangdong 518055 China
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10
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Pan M, Zheng Q, Ding S, Zhang L, Qu Q, Wang T, Hong D, Ren Y, Liang L, Chen C, Mei Z, Liu L. Chemical Protein Synthesis Enabled Mechanistic Studies on the Molecular Recognition of K27‐linked Ubiquitin Chains. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201810814] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Man Pan
- Tsinghua-Peking Center for Life SciencesMOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical BiologyCenter for Synthetic and Systems BiologyDepartment of ChemistryTsinghua University Beijing 100084 China
- State Key Laboratory of Chemical OncogenomicsKey Laboratory of Chemical Biologythe Graduate School at ShenzenTsinghua University Shenzen Guangdong 518055 China
| | - Qingyun Zheng
- Tsinghua-Peking Center for Life SciencesMOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical BiologyCenter for Synthetic and Systems BiologyDepartment of ChemistryTsinghua University Beijing 100084 China
| | - Shan Ding
- Biotechnology Research InstituteChinese Academy of Agricultural Science Beijing 100081 China
| | - Lujia Zhang
- Beijing Advanced Innovation Center for Structural BiologySchool of Life SciencesTsinghua University Beijing 100084 China
| | - Qian Qu
- Tsinghua-Peking Center for Life SciencesMOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical BiologyCenter for Synthetic and Systems BiologyDepartment of ChemistryTsinghua University Beijing 100084 China
| | - Tian Wang
- Tsinghua-Peking Center for Life SciencesMOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical BiologyCenter for Synthetic and Systems BiologyDepartment of ChemistryTsinghua University Beijing 100084 China
| | - Danning Hong
- Biotechnology Research InstituteChinese Academy of Agricultural Science Beijing 100081 China
| | - Yujing Ren
- Biotechnology Research InstituteChinese Academy of Agricultural Science Beijing 100081 China
| | - Lujun Liang
- Tsinghua-Peking Center for Life SciencesMOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical BiologyCenter for Synthetic and Systems BiologyDepartment of ChemistryTsinghua University Beijing 100084 China
| | - Chunlai Chen
- Beijing Advanced Innovation Center for Structural BiologySchool of Life SciencesTsinghua University Beijing 100084 China
| | - Ziqing Mei
- Biotechnology Research InstituteChinese Academy of Agricultural Science Beijing 100081 China
| | - Lei Liu
- Tsinghua-Peking Center for Life SciencesMOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical BiologyCenter for Synthetic and Systems BiologyDepartment of ChemistryTsinghua University Beijing 100084 China
- State Key Laboratory of Chemical OncogenomicsKey Laboratory of Chemical Biologythe Graduate School at ShenzenTsinghua University Shenzen Guangdong 518055 China
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11
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Tsuda Y, Shigenaga A, Tsuji K, Denda M, Sato K, Kitakaze K, Nakamura T, Inokuma T, Itoh K, Otaka A. Development of a Chemical Methodology for the Preparation of Peptide Thioesters Applicable to Naturally Occurring Peptides Using a Sequential Quadruple Acyl Transfer System. ChemistryOpen 2015; 4:448-52. [PMID: 26478838 PMCID: PMC4603404 DOI: 10.1002/open.201500086] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2015] [Indexed: 02/04/2023] Open
Abstract
Peptide thioesters are very useful in protein chemistry, and chemistry- and biochemistry-based protocols are used for the preparation of thioesters. Among such protocols, only a few biochemistry-based approaches have been use for naturally occurring peptide sequences. The development of chemistry-based protocols applicable to natural sequences remains a challenge, and the development of such methods would be a major contribution to protein science. Here, we describe the preparation of peptide thioesters using innovative methodology that features nickel(II)-mediated alcoholysis of a naturally occurring peptide sequence, followed by O−N and N−S acyl transfers. This protocol involves sequential quadruple acyl transfer, termed SQAT. Notably, the SQAT system consists of sequential chemical reactions that allow naturally occurring peptide sequences to be converted to thioesters without requiring an artificial chemical unit.
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Affiliation(s)
- Yusuke Tsuda
- Institute of Health Bioscience, Graduate School of PharmaceuticalSciences, Tokushima University Shomachi, Tokushima, 770-8505, Japan
| | - Akira Shigenaga
- Institute of Health Bioscience, Graduate School of PharmaceuticalSciences, Tokushima University Shomachi, Tokushima, 770-8505, Japan
| | - Kohei Tsuji
- Institute of Health Bioscience, Graduate School of PharmaceuticalSciences, Tokushima University Shomachi, Tokushima, 770-8505, Japan
| | - Masaya Denda
- Institute of Health Bioscience, Graduate School of PharmaceuticalSciences, Tokushima University Shomachi, Tokushima, 770-8505, Japan
| | - Kohei Sato
- Institute of Health Bioscience, Graduate School of PharmaceuticalSciences, Tokushima University Shomachi, Tokushima, 770-8505, Japan
| | - Keisuke Kitakaze
- Institute of Health Bioscience, Graduate School of PharmaceuticalSciences, Tokushima University Shomachi, Tokushima, 770-8505, Japan
| | - Takahiro Nakamura
- Institute of Health Bioscience, Graduate School of PharmaceuticalSciences, Tokushima University Shomachi, Tokushima, 770-8505, Japan
| | - Tsubasa Inokuma
- Institute of Health Bioscience, Graduate School of PharmaceuticalSciences, Tokushima University Shomachi, Tokushima, 770-8505, Japan
| | - Kohji Itoh
- Institute of Health Bioscience, Graduate School of PharmaceuticalSciences, Tokushima University Shomachi, Tokushima, 770-8505, Japan
| | - Akira Otaka
- Institute of Health Bioscience, Graduate School of PharmaceuticalSciences, Tokushima University Shomachi, Tokushima, 770-8505, Japan
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