101
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Woestenenk E, Agback P, Unnerståle S, Henderson I, Agback T. Co-refolding of a functional complex of Dengue NS3 protease and NS2B co-factor domain and backbone resonance assignment by solution NMR. Protein Expr Purif 2017; 140:16-27. [PMID: 28751017 DOI: 10.1016/j.pep.2017.07.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Revised: 06/30/2017] [Accepted: 07/06/2017] [Indexed: 02/03/2023]
Abstract
A novel approach for separate expression of dengue virus NS3 protease and its NS2B cofactor domain is described in this paper. The two proteins are expressed in E.coli and purified separately and subsequently efficiently co-refolded to form a stable complex. This straightforward and robust method allows for separate isotope labeling of the two proteins, facilitating analysis by nuclear magnetic resonance (NMR) spectroscopy. Unlinked NS2B-NS3pro behaves better in NMR spectroscopy than linked NS2B-NS3pro, which has resulted in the backbone resonance assignment of the unlinked NS2B-NS3 complex bound to a peptidic boronic acid inhibitor.
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Affiliation(s)
| | - Peter Agback
- Department of Molecular Sciences, Swedish University of Agricultural Sciences, PO Box 7015, SE-750 07, Uppsala, Sweden
| | | | - Ian Henderson
- Medivir AB, PO Box 1086, SE-141 22, Huddinge, Sweden
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102
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Mahawaththa MC, Pearce BJ, Szabo M, Graham B, Klein CD, Nitsche C, Otting G. Solution conformations of a linked construct of the Zika virus NS2B-NS3 protease. Antiviral Res 2017; 142:141-147. [DOI: 10.1016/j.antiviral.2017.03.011] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2017] [Revised: 03/14/2017] [Accepted: 03/18/2017] [Indexed: 01/28/2023]
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103
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Takagi Y, Matsui K, Nobori H, Maeda H, Sato A, Kurosu T, Orba Y, Sawa H, Hattori K, Higashino K, Numata Y, Yoshida Y. Discovery of novel cyclic peptide inhibitors of dengue virus NS2B-NS3 protease with antiviral activity. Bioorg Med Chem Lett 2017; 27:3586-3590. [PMID: 28539222 DOI: 10.1016/j.bmcl.2017.05.027] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2017] [Revised: 04/24/2017] [Accepted: 05/09/2017] [Indexed: 12/19/2022]
Abstract
NS2B-NS3 protease is an essential enzyme for the replication of dengue virus (DENV), which continues to be a serious threat to worldwide public health. We designed and synthesized a series of cyclic peptides mimicking the substrates of this enzyme, and assayed their activity against the DENV-2 NS2B-NS3 protease. The introduction of aromatic residues at the appropriate positions and conformational restriction generated the most promising cyclic peptide with an IC50 of 0.95μM against NS2B-NS3 protease. Cyclic peptides with proper positioning of additional arginines and aromatic residues exhibited antiviral activity against DENV. Furthermore, replacing the C-terminal amide bond of the polybasic amino acid sequence with an amino methylene moiety stabilized the cyclic peptides against hydrolysis by NS2B-NS3 protease, while maintaining their enzyme inhibitory activity and antiviral activity.
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Affiliation(s)
- Youhei Takagi
- Pharmaceutical Research Center, Shionogi & Co., Ltd., 3-1-1, Futaba-cho, Toyonaka, Osaka 561-0825, Japan
| | - Kouhei Matsui
- Pharmaceutical Research Center, Shionogi & Co., Ltd., 3-1-1, Futaba-cho, Toyonaka, Osaka 561-0825, Japan
| | - Haruaki Nobori
- Pharmaceutical Research Center, Shionogi & Co., Ltd., 3-1-1, Futaba-cho, Toyonaka, Osaka 561-0825, Japan
| | - Haruka Maeda
- Pharmaceutical Research Center, Shionogi & Co., Ltd., 3-1-1, Futaba-cho, Toyonaka, Osaka 561-0825, Japan
| | - Akihiko Sato
- Pharmaceutical Research Center, Shionogi & Co., Ltd., 3-1-1, Futaba-cho, Toyonaka, Osaka 561-0825, Japan
| | - Takeshi Kurosu
- Research Institute for Microbial Diseases, Osaka University, 3-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Yasuko Orba
- Division of Molecular Pathobiology, Center for Zoonosis Control, Hokkaido University, Kita-20, Nishi-10, Kita-ku, Sapporo 001-0020, Japan
| | - Hirofumi Sawa
- Division of Molecular Pathobiology, Center for Zoonosis Control, Hokkaido University, Kita-20, Nishi-10, Kita-ku, Sapporo 001-0020, Japan
| | - Kazunari Hattori
- Pharmaceutical Research Center, Shionogi & Co., Ltd., 3-1-1, Futaba-cho, Toyonaka, Osaka 561-0825, Japan
| | - Kenichi Higashino
- Pharmaceutical Research Center, Shionogi & Co., Ltd., 3-1-1, Futaba-cho, Toyonaka, Osaka 561-0825, Japan
| | - Yoshito Numata
- Pharmaceutical Research Center, Shionogi & Co., Ltd., 3-1-1, Futaba-cho, Toyonaka, Osaka 561-0825, Japan
| | - Yutaka Yoshida
- Pharmaceutical Research Center, Shionogi & Co., Ltd., 3-1-1, Futaba-cho, Toyonaka, Osaka 561-0825, Japan.
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104
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Increased activity of unlinked Zika virus NS2B/NS3 protease compared to linked Zika virus protease. Biochem Biophys Res Commun 2017; 492:668-673. [PMID: 28342876 DOI: 10.1016/j.bbrc.2017.03.108] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2017] [Accepted: 03/19/2017] [Indexed: 11/22/2022]
Abstract
Zika virus (ZIKV) is a flavivirus spread by daytime-active Aedes spp. mosquitoes such as A. aegypti and A. albopictus. Previously thought to be a mild infection, the latest ZIKV outbreak in the Americas is causally associated with more severe symptoms as well as severe birth defects, such as microcephaly. Currently no vaccine or antiviral exists. However, recent progress has demonstrated the viral NS2B/NS3 protease may be a suitable target for the development of small-molecule antiviral agents. To better understand the ZIKV protease, we expressed, purified, and characterized unlinked and linked NS2B/NS3 protease corresponding to an isolate from the recent outbreak in Puerto Rico. Unlinked ZIKV protease is more active and binds substrate with greater affinity than linked ZIKV protease. Therefore, we propose that unlinked ZIKV protease be used when evaluating or designing ZIKV protease inhibitors. Additionally, potent inhibitors of related viral proteases, like West Nile Virus and Dengue virus, may serve as advanced starting points to identify and develop ZIKV protease inhibitors.
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105
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Berlinck RGS, Bertonha AF, Takaki M, Rodriguez JPG. The chemistry and biology of guanidine natural products. Nat Prod Rep 2017; 34:1264-1301. [DOI: 10.1039/c7np00037e] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The chemistry and biology of natural guanidines isolated from microbial culture media, from marine invertebrates, as well as from terrestrial plants and animals, are reviewed.
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Affiliation(s)
| | - Ariane F. Bertonha
- Instituto de Química de São Carlos
- Universidade de São Paulo
- São Carlos
- Brazil
| | - Mirelle Takaki
- Instituto de Química de São Carlos
- Universidade de São Paulo
- São Carlos
- Brazil
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