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Iwata T, Tanaka K, Tahara T, Nozaki S, Onoe H, Watanabe Y, Fukase K. A conformationally fixed analog of the peptide mimic Grb2–SH2 domain: synthesis and evaluation against the A431 cancer cell. MOLECULAR BIOSYSTEMS 2013; 9:1019-25. [DOI: 10.1039/c3mb25462c] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Tanaka K, Shirotsuki S, Iwata T, Kageyama C, Tahara T, Nozaki S, Siwu ERO, Tamura S, Douke S, Murakami N, Onoe H, Watanabe Y, Fukase K. Template-assisted and self-activating clicked peptide as a synthetic mimic of the SH2 domain. ACS Chem Biol 2012; 7:637-45. [PMID: 22239652 DOI: 10.1021/cb2003175] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A new synthetic strategy for obtaining artificial receptors that selectively regulate and/or control specific protein/protein interactions was developed based on the template-assisted and the self-activating click reaction applied to a combinatorial library. Synthetic mimics of the Grb2-SH2 domain, examined as a model case, selectively bound to a target signaling protein to induce cytotoxicity and inhibit tumor growth in vivo.
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Affiliation(s)
- Katsunori Tanaka
- Department
of Chemistry, Graduate
School of Science, Osaka University, 1-1
Machikaneyama-cho, Toyonaka-shi, Osaka 560-0043, Japan
| | - Sanae Shirotsuki
- Department
of Chemistry, Graduate
School of Science, Osaka University, 1-1
Machikaneyama-cho, Toyonaka-shi, Osaka 560-0043, Japan
| | - Takayuki Iwata
- Department
of Chemistry, Graduate
School of Science, Osaka University, 1-1
Machikaneyama-cho, Toyonaka-shi, Osaka 560-0043, Japan
| | - Chika Kageyama
- Department
of Chemistry, Graduate
School of Science, Osaka University, 1-1
Machikaneyama-cho, Toyonaka-shi, Osaka 560-0043, Japan
| | - Tsuyoshi Tahara
- RIKEN Center for Molecular Imaging Science, 6-7-3 Minatojima-minamimachi,
Chuo-ku, Kobe-shi, Hyogo 650-0047, Japan
| | - Satoshi Nozaki
- RIKEN Center for Molecular Imaging Science, 6-7-3 Minatojima-minamimachi,
Chuo-ku, Kobe-shi, Hyogo 650-0047, Japan
| | - Eric R. O. Siwu
- Department
of Chemistry, Graduate
School of Science, Osaka University, 1-1
Machikaneyama-cho, Toyonaka-shi, Osaka 560-0043, Japan
| | - Satoru Tamura
- Graduate School of Pharmaceutical
Sciences, Osaka University, 1-6 Yamada-oka,
Suita-shi, Osaka 565-0871, Japan
| | - Shunsuke Douke
- Graduate School of Pharmaceutical
Sciences, Osaka University, 1-6 Yamada-oka,
Suita-shi, Osaka 565-0871, Japan
| | - Nobutoshi Murakami
- Graduate School of Pharmaceutical
Sciences, Osaka University, 1-6 Yamada-oka,
Suita-shi, Osaka 565-0871, Japan
| | - Hirotaka Onoe
- RIKEN Center for Molecular Imaging Science, 6-7-3 Minatojima-minamimachi,
Chuo-ku, Kobe-shi, Hyogo 650-0047, Japan
| | - Yasuyoshi Watanabe
- RIKEN Center for Molecular Imaging Science, 6-7-3 Minatojima-minamimachi,
Chuo-ku, Kobe-shi, Hyogo 650-0047, Japan
| | - Koichi Fukase
- Department
of Chemistry, Graduate
School of Science, Osaka University, 1-1
Machikaneyama-cho, Toyonaka-shi, Osaka 560-0043, Japan
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Li Q, Yao ZH, Shi YH, Yao XS, Ye WC, Liu X. Determination of the three-dimensional structure of Gynoside A in solution using NMR and molecular modeling. Molecules 2007; 12:907-16. [PMID: 17851443 PMCID: PMC6149387 DOI: 10.3390/12040907] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2007] [Revised: 04/05/2007] [Accepted: 04/18/2007] [Indexed: 11/16/2022] Open
Abstract
The three-dimensional structure of Gynoside A, an ocotillone-type triterpenoid glycoside isolated from Gynostemma pentaphyllum, was determined in pyridine-d5 and DMSO-d6 solution through constrained molecular modeling using constraints derived from proton NMR spectra. The calculation yielded well-defined global minima. Except for some quantitative details the overall structure of Gynoside A in pyridine-d5 shared many common features with that in DMSO-d6. The structure in pyridine-d5 had lower energies than that in DMSO-d6 solution.
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Affiliation(s)
- Qian Li
- Department of Phytochemistry, China Pharmaceutical University, Nanjing 210009, PR China.
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Abstract
We identified 1113 articles (103 reviews, 1010 primary research articles) published in 2005 that describe experiments performed using commercially available optical biosensors. While this number of publications is impressive, we find that the quality of the biosensor work in these articles is often pretty poor. It is a little disappointing that there appears to be only a small set of researchers who know how to properly perform, analyze, and present biosensor data. To help focus the field, we spotlight work published by 10 research groups that exemplify the quality of data one should expect to see from a biosensor experiment. Also, in an effort to raise awareness of the common problems in the biosensor field, we provide side-by-side examples of good and bad data sets from the 2005 literature.
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Affiliation(s)
- Rebecca L Rich
- Center for Biomolecular Interaction Analysis, University of Utah, Salt Lake City, UT 84132, USA
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