1
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Shigenaga A, Kyan R. Theoretical study to gain fundamental insight into reaction mechanism of N-S acyl transfer of N-sulfanylethylanilide-based protein labeling reagent on protein surface. J Pept Sci 2023; 29:e3526. [PMID: 37257834 DOI: 10.1002/psc.3526] [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: 04/10/2023] [Revised: 05/17/2023] [Accepted: 05/19/2023] [Indexed: 06/02/2023]
Abstract
Elucidation of protein function is one of the central issues in the field of life sciences. To study the function of proteins not in isolation, but in a cell or its lysate, thus, it is necessary to selectively label the target protein in a mixture. Affinity labeling is one of several widely used methods for selective labeling; however, this method has the disadvantage that the labeling reagent is always activated, albeit weakly. Therefore, fine-tuning of the reactivity and/or reaction conditions is generally required for successful target-selective labeling. We previously developed a new affinity labeling reagent with N-sulfanylethylanilide (SEAlide) as a key reactive unit. It was designed based on the following hypotheses. SEAlide is less reactive and does not label in the absence of a target protein. Upon target binding, amino acid side-chain functional groups on the target surface convert SEAlide into a thioester form via N-S acyl transfer, allowing the target to be labeled. However, no evidence has been obtained so far to directly prove the hypothesis. In this study, we examine whether amino acid side-chain functional groups can activate SEAlide from the viewpoint of theoretical chemistry. The theoretical studies show that the activation free energy and enthalpy of the acyl transfer of SEAlide are reduced in the presence of methylammonium, which is a model for the protonated side chain of Lys, and acetate, which is a model for the deprotonated side chain of Asp/Glu. It suggests that Lys and Asp/Glu side chains could potentially stabilize the activation transition states to accelerate the thioester formation. Furthermore, the significant decrease in the activation enthalpy indicates that the contribution of entropy to the transition state is large. This result supports the original hypothesis that the SEAlide-based labeling reagent is efficiently activated by binding to the target protein.
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Affiliation(s)
- Akira Shigenaga
- Faculty of Pharmacy and Pharmaceutical Sciences, Fukuyama University, Fukuyama, Japan
| | - Ryuji Kyan
- Faculty of Pharmacy and Pharmaceutical Sciences, Fukuyama University, Fukuyama, Japan
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2
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Otaka A. Development of Naturally Inspired Peptide and Protein Chemistry. Chem Pharm Bull (Tokyo) 2022; 70:748-764. [DOI: 10.1248/cpb.c22-00623] [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)
- Akira Otaka
- Institute of Biomedical Sciences and Graduate School of Pharmaceutical Sciences, Tokushima University
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3
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Shigenaga A. Theoretical study on reaction mechanism of phosphate-catalysed N-S acyl transfer of N-sulfanylethylanilide (SEAlide). Org Biomol Chem 2020; 18:9706-9711. [PMID: 33237096 DOI: 10.1039/d0ob01968b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
C-Terminally thioesterificated peptides are essential building blocks for chemical protein synthesis. To date, many acyl transfer auxiliaries have been developed to enable facile preparation of peptide thioesters. We previously developed an N-sulfanylethylanilide (SEAlide) auxiliary, which causes an N-S acyl transfer reaction upon addition of phosphate salt to convert a C-terminal amide to a thioester. The mechanism of how phosphate triggers the reaction is speculative, and the details are unknown. In this study, the mechanism by which phosphate promotes acyl transfer is discussed based on density functional theory (DFT) calculations and non-covalent interaction (NCI) analysis. As a result, although the notion that phosphate acts as an acid-base catalyst, as speculated in our previous study, was correct, it became clear that two competing reaction pathways exist: a previously proposed stepwise pathway and a concerted one. Furthermore, calculation was performed in the presence of various additives other than phosphate to uncover the effect of the additives on the stability of transition states.
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Affiliation(s)
- Akira Shigenaga
- Faculty of Pharmacy and Pharmaceutical Sciences, Fukuyama University, Hiroshima 729-0292, Japan.
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4
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Jyoti K, Jain S, Katare OP, Katyal A, Chandra R, Madan J. Non-small cell lung cancer tumour antigen, MUC-1 peptide-loaded non-aggregated poly (lactide-co-glycolide) nanoparticles augmented cellular uptake in mouse professional antigen-presenting cells: optimisation and characterisation. J Microencapsul 2019; 37:14-28. [DOI: 10.1080/02652048.2019.1692943] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Kiran Jyoti
- Department of Pharmaceutics, Chandigarh College of Pharmacy, Mohali, Punjab, India
- IK Gujral Punjab Technical University, Jalandhar, Punjab, India
| | - Sanyog Jain
- Centre for Pharmaceutical Nanotechnology, Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research, SAS Nagar, Punjab, India
| | - Om Prakash Katare
- University Institute of Pharmaceutical Sciences, Punjab University, Chandigarh, India
| | - Anju Katyal
- Dr. B. R Ambedkar Centre for Biomedical Research, University of Delhi, Delhi, India
| | - Ramesh Chandra
- Dr. B. R Ambedkar Centre for Biomedical Research, University of Delhi, Delhi, India
- Department of Chemistry, University of Delhi, Delhi, India
| | - Jitender Madan
- Department of Pharmaceutics, Chandigarh College of Pharmacy, Mohali, Punjab, India
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5
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Shigenaga A. [Looking Back on Study Abroad at The Scripps Research Institute]. YAKUGAKU ZASSHI 2019; 139:221-228. [PMID: 30713231 DOI: 10.1248/yakushi.18-00169-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Just after receiving my Ph.D. degree in 2004 from Tokushima University, under the supervision of Professor Masayuki Shibuya, I had the opportunity to work as a Research Associate in the laboratory of Professor Kim D. Janda at The Scripps Research Institute in the U.S., for about a year. Since it has already been more than 10 years since my time at Scripps, the specific research performed at that time may no longer be of interest to readers, but the benefit of working in a different research environment is timeless. Therefore, this paper describes not only details of the research conducted, but also the significance of working in a foreign country as a postdoc, and the subsequent influence those experiences at The Scripps Research Institute have had on my career.
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Affiliation(s)
- Akira Shigenaga
- Institute of Biomedical Sciences and Graduate School of Pharmaceutical Sciences, Tokushima University
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6
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Naruse N, Ohkawachi K, Inokuma T, Shigenaga A, Otaka A. Resin-Bound Crypto-Thioester for Native Chemical Ligation. Org Lett 2018; 20:2449-2453. [DOI: 10.1021/acs.orglett.8b00795] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Naoto Naruse
- Institute of Biomedical Sciences and Graduate School of Pharmaceutical Sciences, Tokushima University, Tokushima 770-8505, Japan
| | - Kento Ohkawachi
- Institute of Biomedical Sciences and Graduate School of Pharmaceutical Sciences, Tokushima University, Tokushima 770-8505, Japan
| | - Tsubasa Inokuma
- Institute of Biomedical Sciences and Graduate School of Pharmaceutical Sciences, Tokushima University, Tokushima 770-8505, Japan
| | - Akira Shigenaga
- Institute of Biomedical Sciences and Graduate School of Pharmaceutical Sciences, Tokushima University, Tokushima 770-8505, Japan
| | - Akira Otaka
- Institute of Biomedical Sciences and Graduate School of Pharmaceutical Sciences, Tokushima University, Tokushima 770-8505, Japan
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7
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Jiang YY, Liu TT, Zhang RX, Xu ZY, Sun X, Bi S. Mechanism and Rate-Determining Factors of Amide Bond Formation through Acyl Transfer of Mixed Carboxylic–Carbamic Anhydrides: A Computational Study. J Org Chem 2018; 83:2676-2685. [DOI: 10.1021/acs.joc.7b03107] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Yuan-Ye Jiang
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, People’s Republic of China
| | - Tian-Tian Liu
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, People’s Republic of China
| | - Rui-Xue Zhang
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, People’s Republic of China
| | - Zhong-Yan Xu
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, People’s Republic of China
| | - Xue Sun
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, People’s Republic of China
| | - Siwei Bi
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, People’s Republic of China
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8
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Miyajima R, Tsuda Y, Inokuma T, Shigenaga A, Imanishi M, Futaki S, Otaka A. Preparation of peptide thioesters from naturally occurring sequences using reaction sequence consisting of regioselective S-cyanylation and hydrazinolysis. Biopolymers 2017; 106:531-46. [PMID: 26501985 DOI: 10.1002/bip.22757] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2015] [Revised: 10/16/2015] [Accepted: 10/18/2015] [Indexed: 12/19/2022]
Abstract
The vital roles of peptide/protein thioesters in protein chemistry, including chemical or semi-synthesis of proteins, have encouraged studies on the development of methods for the preparation of such chemical units. Biochemical protocols using intein or sortase have proved to be useful in protein chemistry as methods suitable for naturally occurring sequences, including recombinant proteins. Although chemical protocols are potential options for thioester preparation, only a few are applicable to naturally occurring sequences, because standard chemical protocols require an artificial chemical device for producing thioesters. In this context, the chemical preparation of thioesters based on a reaction sequence consisting of regioselective S-cyanylation and hydrazinolysis was investigated. Regioselective S-cyanylation, which is required for cysteine-containing thioesters, was achieved with the aid of a zinc-complex formation of a CCHH-type zinc-finger sequence. Free cysteine residues that are not involved in complex formation were selectively protected with a 6-nitroveratryl group followed by S-cyanylation of the zinc-binding cysteine. Hydrazinolysis of the resulting S-cyanopeptide and subsequent photo-removal of the 6-nitroveratryl group yielded the desired peptide hydrazide, which was then converted to the corresponding thioester. The generated thioester was successfully used in N-to-C-directed one-pot/sequential native chemical ligation using an N-sulfanylethylanilide peptide to give a 64-residue peptide toxin. © 2015 Wiley Periodicals, Inc. Biopolymers (Pept Sci) 106: 531-546, 2016.
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Affiliation(s)
- Rin Miyajima
- Institute of Biomedical Sciences and Graduate School of Pharmaceutical Sciences, Tokushima University, Tokushima, 770-8505, Japan
| | - Yusuke Tsuda
- Institute of Biomedical Sciences and Graduate School of Pharmaceutical Sciences, Tokushima University, Tokushima, 770-8505, Japan
| | - Tsubasa Inokuma
- Institute of Biomedical Sciences and Graduate School of Pharmaceutical Sciences, Tokushima University, Tokushima, 770-8505, Japan
| | - Akira Shigenaga
- Institute of Biomedical Sciences and Graduate School of Pharmaceutical Sciences, Tokushima University, Tokushima, 770-8505, Japan
| | - Miki Imanishi
- Institute for Chemical Research, Kyoto University, Kyoto, 611-0011, Japan
| | - Shiroh Futaki
- Institute for Chemical Research, Kyoto University, Kyoto, 611-0011, Japan
| | - Akira Otaka
- Institute of Biomedical Sciences and Graduate School of Pharmaceutical Sciences, Tokushima University, Tokushima, 770-8505, Japan
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9
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Shigenaga A, Yamamoto J, Kohiki T, Inokuma T, Otaka A. Invention of stimulus-responsive peptide-bond-cleaving residue (Spr) and its application to chemical biology tools. J Pept Sci 2017; 23:505-513. [PMID: 28105728 DOI: 10.1002/psc.2961] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2016] [Revised: 12/05/2016] [Accepted: 12/07/2016] [Indexed: 01/04/2023]
Abstract
Elucidation of biological functions of peptides and proteins is essential for understanding peptide/protein-related biological events and developing drugs. Caged peptides and proteins that release a parent active peptide/protein by photo-irradiation have successfully been employed to elucidate the functions. Whereas the usual caged peptide/protein enables conversion of an inactive form to an active form (OFF-to-ON conversion) by photo-induced deprotection, photo-triggered main chain cleavage is reported to be applicable to ON-to-OFF conversion. These peptides and proteins are photo-responsive; however, if peptides and proteins could respond to other stimuli such as disease-related environment or enzymes, their range of application should be widened. To convert the photo-responsive peptide/protein into other stimulus-responsive peptide/protein, quite laborious de novo design and synthesis of the stimulus-responsive unit are required. In this context, we designed a stimulus-responsive peptide-bond-cleaving residue (Spr) in which the stimuli available for the main chain cleavage vary according to the choice of protecting groups on the residue. In this review, design and synthesis of Spr are introduced, and challenges to apply Spr to other fields to enable, for example, functional control, localization control, delivery of cargos, labeling of a protein of interest in living cells, and identification of target proteins of bioactive ligands are discussed. Copyright © 2017 European Peptide Society and John Wiley & Sons, Ltd.
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Affiliation(s)
- Akira Shigenaga
- Institute of Biomedical Sciences and Graduate School of Pharmaceutical Sciences, Tokushima University, 1-78-1 Shomachi, Tokushima, 770-8505, Japan.,PRESTO, Japan Science and Technology Agency (JST), 4-1-8 Honcho, Kawaguchi, Saitama, 332-0012, Japan
| | - Jun Yamamoto
- Institute of Biomedical Sciences and Graduate School of Pharmaceutical Sciences, Tokushima University, 1-78-1 Shomachi, Tokushima, 770-8505, Japan
| | - Taiki Kohiki
- Institute of Biomedical Sciences and Graduate School of Pharmaceutical Sciences, Tokushima University, 1-78-1 Shomachi, Tokushima, 770-8505, Japan
| | - Tsubasa Inokuma
- Institute of Biomedical Sciences and Graduate School of Pharmaceutical Sciences, Tokushima University, 1-78-1 Shomachi, Tokushima, 770-8505, Japan
| | - Akira Otaka
- Institute of Biomedical Sciences and Graduate School of Pharmaceutical Sciences, Tokushima University, 1-78-1 Shomachi, Tokushima, 770-8505, Japan
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10
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Kohiki T, Kato Y, Nishikawa Y, Yorita K, Sagawa I, Denda M, Inokuma T, Shigenaga A, Fukui K, Otaka A. Elucidation of inhibitor-binding pockets ofd-amino acid oxidase using docking simulation and N-sulfanylethylanilide-based labeling technology. Org Biomol Chem 2017; 15:5289-5297. [DOI: 10.1039/c7ob00633k] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Binding pockets of a schizophrenia-relatedd-amino acid oxidase to its inhibitor were clarified by docking simulation and protein labeling experiments.
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Affiliation(s)
- Taiki Kohiki
- Institute of Biomedical Sciences and Graduate School of Pharmaceutical Sciences
- Tokushima University
- Tokushima 770-8505
- Japan
| | - Yusuke Kato
- Division of Enzyme Pathophysiology
- The Institute for Enzyme Research (KOSOKEN)
- Tokushima University
- Tokushima 770-8503
- Japan
| | - Yusuke Nishikawa
- Institute of Biomedical Sciences and Graduate School of Pharmaceutical Sciences
- Tokushima University
- Tokushima 770-8505
- Japan
| | - Kazuko Yorita
- Division of Enzyme Pathophysiology
- The Institute for Enzyme Research (KOSOKEN)
- Tokushima University
- Tokushima 770-8503
- Japan
| | - Ikuko Sagawa
- Support Center for Advanced Medical Sciences
- Institute of Biomedical Sciences
- Tokushima University Graduate School
- Tokushima 770-8505
- Japan
| | - Masaya Denda
- Institute of Biomedical Sciences and Graduate School of Pharmaceutical Sciences
- Tokushima University
- Tokushima 770-8505
- Japan
| | - Tsubasa Inokuma
- Institute of Biomedical Sciences and Graduate School of Pharmaceutical Sciences
- Tokushima University
- Tokushima 770-8505
- Japan
| | - Akira Shigenaga
- Institute of Biomedical Sciences and Graduate School of Pharmaceutical Sciences
- Tokushima University
- Tokushima 770-8505
- Japan
- PRESTO
| | - Kiyoshi Fukui
- Division of Enzyme Pathophysiology
- The Institute for Enzyme Research (KOSOKEN)
- Tokushima University
- Tokushima 770-8503
- Japan
| | - Akira Otaka
- Institute of Biomedical Sciences and Graduate School of Pharmaceutical Sciences
- Tokushima University
- Tokushima 770-8505
- Japan
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11
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Eto M, Naruse N, Morimoto K, Yamaoka K, Sato K, Tsuji K, Inokuma T, Shigenaga A, Otaka A. Development of an Anilide-Type Scaffold for the Thioester Precursor N-Sulfanylethylcoumarinyl Amide. Org Lett 2016; 18:4416-9. [PMID: 27529363 DOI: 10.1021/acs.orglett.6b02207] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
N-Sulfanylethylcoumarinyl amide (SECmide) peptide, which was initially developed for use in the fluorescence-guided detection of promoters of N-S acyl transfer, was successfully applied to a facile and side reaction-free protocol for N-S acyl-transfer-mediated synthesis of peptide thioesters. Additionally, 4-mercaptobenzylphosphonic acid (MBPA) was proven to be a useful catalyst for the SECmide or N-sulfanylethylanilide (SEAlide)-mediated NCL reaction.
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Affiliation(s)
- Mitsuhiro Eto
- Institute of Biomedical Sciences and Graduate School of Pharmaceutical Sciences, Tokushima University , Tokushima 770-8505, Japan
| | - Naoto Naruse
- Institute of Biomedical Sciences and Graduate School of Pharmaceutical Sciences, Tokushima University , Tokushima 770-8505, Japan
| | - Kyohei Morimoto
- Institute of Biomedical Sciences and Graduate School of Pharmaceutical Sciences, Tokushima University , Tokushima 770-8505, Japan
| | - Kosuke Yamaoka
- Institute of Biomedical Sciences and Graduate School of Pharmaceutical Sciences, Tokushima University , Tokushima 770-8505, Japan
| | - Kohei Sato
- Institute of Biomedical Sciences and Graduate School of Pharmaceutical Sciences, Tokushima University , Tokushima 770-8505, Japan
| | - Kohei Tsuji
- Institute of Biomedical Sciences and Graduate School of Pharmaceutical Sciences, Tokushima University , Tokushima 770-8505, Japan
| | - Tsubasa Inokuma
- Institute of Biomedical Sciences and Graduate School of Pharmaceutical Sciences, Tokushima University , Tokushima 770-8505, Japan
| | - Akira Shigenaga
- Institute of Biomedical Sciences and Graduate School of Pharmaceutical Sciences, Tokushima University , Tokushima 770-8505, Japan.,PRESTO, Japan Science and Technology Agency (JST) , Kawaguchi, Saitama 332-0012, Japan
| | - Akira Otaka
- Institute of Biomedical Sciences and Graduate School of Pharmaceutical Sciences, Tokushima University , Tokushima 770-8505, Japan
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12
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Morisaki T, Denda M, Yamamoto J, Tsuji D, Inokuma T, Itoh K, Shigenaga A, Otaka A. An N-sulfanylethylanilide-based traceable linker for enrichment and selective labelling of target proteins. Chem Commun (Camb) 2016; 52:6911-3. [PMID: 27146590 DOI: 10.1039/c6cc01229a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
An N-sulfanylethylanilide-based traceable linker, developed to facilitate identification of target proteins of bioactive compounds, was introduced into an alkynylated target protein. Subsequent adsorption onto streptavidin beads allowed it to be treated with a cysteine-fluorophore conjugate in the presence of phosphate. This induced the N-S acyl transfer reaction of the N-sulfanylethylanilide unit. The subsequent native chemical ligation of the fluorophore resulted in cleavage of the linker for target elution and fluorescence labelling of the target, allowing it to be distinguished from non-target proteins.
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Affiliation(s)
- Takuya Morisaki
- Institute of Biomedical Sciences and Graduate School of Pharmaceutical Sciences, Tokushima University, Shomachi, Tokushima 770-8505, Japan.
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13
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Shimizu T, Miyajima R, Naruse N, Yamaoka K, Aihara K, Shigenaga A, Otaka A. Facile Preparation of Peptides with C-Terminal N-Alkylamide via Radical-Initiated Dethiocarboxylation. Chem Pharm Bull (Tokyo) 2016; 64:375-8. [PMID: 27039836 DOI: 10.1248/cpb.c15-01025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A new synthetic method has been developed to prepare peptides bearing a C-terminal N-alkylamide from peptide thioacids via a radical-initiated dethiocarboxylation process. This method enables the introduction of various alkyl groups to C-terminal amides simply by replacing the amino acid building block. Its application to the preparation of anti-cancer drug ABT-510 is also reported.
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Affiliation(s)
- Tatsuhiko Shimizu
- Institute of Biomedical Sciences and Graduate School of Pharmaceutical Sciences, Tokushima University
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14
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Facile synthesis of C-terminal peptide thioacids under mild conditions from N -sulfanylethylanilide peptides. Tetrahedron 2016. [DOI: 10.1016/j.tet.2015.12.070] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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15
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Kariyazono H, Nadai R, Miyajima R, Takechi-Haraya Y, Baba T, Shigenaga A, Okuhira K, Otaka A, Saito H. Formation of stable nanodiscs by bihelical apolipoprotein A-I mimetic peptide. J Pept Sci 2016; 22:116-22. [PMID: 26780967 DOI: 10.1002/psc.2847] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Revised: 11/14/2015] [Accepted: 12/02/2015] [Indexed: 01/09/2023]
Abstract
Nanodiscs are composed of scaffold protein or peptide such as apolipoprotein A-I (apoA-I) and phospholipids. Although peptide-based nanodiscs have an advantage to modulate the size of nanodiscs by changing phospholipid/peptide ratios, they are usually less stable than apoA-I-based nanodiscs. In this study, we designed a novel nanodisc scaffold peptide (NSP) that has proline-punctuated bihelical amphipathic structure based on apoA-I mimetic peptides. NSP formed α-helical structure on 1-palmitoyl-2-oleoyl phosphatidylcholine (POPC) nanodiscs prepared by cholate dialysis method. Dynamic light scattering measurements demonstrated that diameters of NSP nanodiscs vary depending upon POPC/NSP ratios. Comparison of thermal unfolding of nanodiscs monitored by circular dichroism measurements demonstrated that NSP forms much more stable nanodiscs with POPC than monohelical peptide, 4F, exhibiting comparable stability to apoA-I-POPC nanodiscs. Intrinsic Trp fluorescence measurements showed that Trp residues of NSP exhibit more hydrophobic environment than that of 4 F on nanodiscs, suggesting the stronger interaction of NSP with phospholipids. Thus, the bihelical structure of NSP appears to increase the stability of nanodiscs because of the enhanced interaction of peptides with phospholipids. In addition, NSP as well as 4F spontaneously solubilized POPC vesicles into nanodiscs without using detergent. These results indicate that bihelical NSP forms nanodiscs with comparable stability to apoA-I and has an ability to control the size of nanodiscs simply by changing phospholipid/peptide ratios.
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Affiliation(s)
- Hirokazu Kariyazono
- Institute of Biomedical Sciences, Graduate School of Pharmaceutical Sciences, Tokushima University, 1-78-1 Shomachi, Tokushima, 770-8505, Japan
| | - Ryo Nadai
- Institute of Biomedical Sciences, Graduate School of Pharmaceutical Sciences, Tokushima University, 1-78-1 Shomachi, Tokushima, 770-8505, Japan
| | - Rin Miyajima
- Institute of Biomedical Sciences, Graduate School of Pharmaceutical Sciences, Tokushima University, 1-78-1 Shomachi, Tokushima, 770-8505, Japan
| | - Yuki Takechi-Haraya
- Institute of Biomedical Sciences, Graduate School of Pharmaceutical Sciences, Tokushima University, 1-78-1 Shomachi, Tokushima, 770-8505, Japan.,Division of Drugs, National Institute of Health Sciences, Tokyo, 158-8501, Japan
| | - Teruhiko Baba
- Research Center for Stem Cell Engineering, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, 305-8565, Japan
| | - Akira Shigenaga
- Institute of Biomedical Sciences, Graduate School of Pharmaceutical Sciences, Tokushima University, 1-78-1 Shomachi, Tokushima, 770-8505, Japan
| | - Keiichiro Okuhira
- Institute of Biomedical Sciences, Graduate School of Pharmaceutical Sciences, Tokushima University, 1-78-1 Shomachi, Tokushima, 770-8505, Japan
| | - Akira Otaka
- Institute of Biomedical Sciences, Graduate School of Pharmaceutical Sciences, Tokushima University, 1-78-1 Shomachi, Tokushima, 770-8505, Japan
| | - Hiroyuki Saito
- Institute of Biomedical Sciences, Graduate School of Pharmaceutical Sciences, Tokushima University, 1-78-1 Shomachi, Tokushima, 770-8505, Japan
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16
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Aihara K, Yamaoka K, Naruse N, Inokuma T, Shigenaga A, Otaka A. One-Pot/Sequential Native Chemical Ligation Using Photocaged Crypto-thioester. Org Lett 2016; 18:596-9. [DOI: 10.1021/acs.orglett.5b03661] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Keisuke Aihara
- Institute
of Biomedical Sciences
and Graduate School of Pharmaceutical Sciences, Tokushima University, 1-78-1 Shomachi, Tokushima 770-8505, Japan
| | - Kosuke Yamaoka
- Institute
of Biomedical Sciences
and Graduate School of Pharmaceutical Sciences, Tokushima University, 1-78-1 Shomachi, Tokushima 770-8505, Japan
| | - Naoto Naruse
- Institute
of Biomedical Sciences
and Graduate School of Pharmaceutical Sciences, Tokushima University, 1-78-1 Shomachi, Tokushima 770-8505, Japan
| | - Tsubasa Inokuma
- Institute
of Biomedical Sciences
and Graduate School of Pharmaceutical Sciences, Tokushima University, 1-78-1 Shomachi, Tokushima 770-8505, Japan
| | - Akira Shigenaga
- Institute
of Biomedical Sciences
and Graduate School of Pharmaceutical Sciences, Tokushima University, 1-78-1 Shomachi, Tokushima 770-8505, Japan
| | - Akira Otaka
- Institute
of Biomedical Sciences
and Graduate School of Pharmaceutical Sciences, Tokushima University, 1-78-1 Shomachi, Tokushima 770-8505, Japan
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17
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Denda M, Morisaki T, Kohiki T, Yamamoto J, Sato K, Sagawa I, Inokuma T, Sato Y, Yamauchi A, Shigenaga A, Otaka A. Labelling of endogenous target protein via N–S acyl transfer-mediated activation of N-sulfanylethylanilide. Org Biomol Chem 2016; 14:6244-51. [DOI: 10.1039/c6ob01014h] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
An N-sulfanylethylanilide (SEAlide)-based labelling reagent (SEAL) has been developed for the labelling of the target proteins of bioactive compounds.
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