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Dai XL, Wu C, Li JH, Liu LC, He X, Lu TB, Chen JM. Modulating the solubility and pharmacokinetic properties of 5-fluorouracil via cocrystallization. CrystEngComm 2020. [DOI: 10.1039/d0ce00409j] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The solubility and pharmacokinetic properties of 5-fluorouracil were modified by cocrystallization with dihydroxybenzoic acids.
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Affiliation(s)
- Xia-Lin Dai
- School of Pharmaceutical Sciences
- Sun Yat-Sen University
- Guangzhou 510006
- China
| | - Chao Wu
- Tianjin Key Laboratory of Drug Targeting and Bioimaging
- School of Chemistry and Chemical Engineering
- Tianjin University of Technology
- Tianjin 300384
- China
| | - Jin-Hui Li
- College of Veterinary Medicine
- Hebei Agricultural University
- Baoding 071000
- China
| | - Lian-Chao Liu
- College of Veterinary Medicine
- Hebei Agricultural University
- Baoding 071000
- China
| | - Xin He
- College of Veterinary Medicine
- Hebei Agricultural University
- Baoding 071000
- China
| | - Tong-Bu Lu
- Institute for New Energy Materials and Low Carbon Technologies
- School of Materials Science and Engineering
- Tianjin University of Technology
- Tianjin 300384
- China
| | - Jia-Mei Chen
- Tianjin Key Laboratory of Drug Targeting and Bioimaging
- School of Chemistry and Chemical Engineering
- Tianjin University of Technology
- Tianjin 300384
- China
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7
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Close DM, Eriksson LA, Hole EO, Sagstuen E, Nelson WH. Experimental and Theoretical Investigation of the Mechanism of Radiation-Induced Radical Formation in Hydrogen-Bonded Cocrystals of 1-Methylcytosine and 5-Fluorouracil. J Phys Chem B 2000. [DOI: 10.1021/jp0018246] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- David M. Close
- Physics Department, East Tennessee State University, P.O. Box 70652, Johnson City, Tennessee 37614, Department of Quantum Chemistry, Box 518, Uppsala University, S-751 20 Uppsala, Sweden, Department of Physics, University of Oslo, P.O. Box 1048, Blindern, N-0316 Oslo, Norway, and Department of Physics and Astronomy, Georgia State University, Atlanta, Georgia 30303
| | - Leif A. Eriksson
- Physics Department, East Tennessee State University, P.O. Box 70652, Johnson City, Tennessee 37614, Department of Quantum Chemistry, Box 518, Uppsala University, S-751 20 Uppsala, Sweden, Department of Physics, University of Oslo, P.O. Box 1048, Blindern, N-0316 Oslo, Norway, and Department of Physics and Astronomy, Georgia State University, Atlanta, Georgia 30303
| | - Eli O. Hole
- Physics Department, East Tennessee State University, P.O. Box 70652, Johnson City, Tennessee 37614, Department of Quantum Chemistry, Box 518, Uppsala University, S-751 20 Uppsala, Sweden, Department of Physics, University of Oslo, P.O. Box 1048, Blindern, N-0316 Oslo, Norway, and Department of Physics and Astronomy, Georgia State University, Atlanta, Georgia 30303
| | - Einar Sagstuen
- Physics Department, East Tennessee State University, P.O. Box 70652, Johnson City, Tennessee 37614, Department of Quantum Chemistry, Box 518, Uppsala University, S-751 20 Uppsala, Sweden, Department of Physics, University of Oslo, P.O. Box 1048, Blindern, N-0316 Oslo, Norway, and Department of Physics and Astronomy, Georgia State University, Atlanta, Georgia 30303
| | - William H. Nelson
- Physics Department, East Tennessee State University, P.O. Box 70652, Johnson City, Tennessee 37614, Department of Quantum Chemistry, Box 518, Uppsala University, S-751 20 Uppsala, Sweden, Department of Physics, University of Oslo, P.O. Box 1048, Blindern, N-0316 Oslo, Norway, and Department of Physics and Astronomy, Georgia State University, Atlanta, Georgia 30303
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de Vos AM, Tong L, Milburn MV, Matias PM, Jancarik J, Noguchi S, Nishimura S, Miura K, Ohtsuka E, Kim SH. Three-dimensional structure of an oncogene protein: catalytic domain of human c-H-ras p21. Science 1988; 239:888-93. [PMID: 2448879 DOI: 10.1126/science.2448879] [Citation(s) in RCA: 465] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The crystal structure at 2.7 A resolution of the normal human c-H-ras oncogene protein lacking a flexible carboxyl-terminal 18 residue reveals that the protein consists of a six-stranded beta sheet, four alpha helices, and nine connecting loops. Four loops are involved in interactions with bound guanosine diphosphate: one with the phosphates, another with the ribose, and two with the guanine base. Most of the transforming proteins (in vivo and in vitro) have single amino acid substitutions at one of a few key positions in three of these four loops plus one additional loop. The biological functions of the remaining five loops and other exposed regions are at present unknown. However, one loop corresponds to the binding site for a neutralizing monoclonal antibody and another to a putative "effector region"; mutations in the latter region do not alter guanine nucleotide binding or guanosine triphosphatase activity but they do reduce the transforming activity of activated proteins. The data provide a structural basis for understanding the known biochemical properties of normal as well as activated ras oncogene proteins and indicate additional regions in the molecule that may possibly participate in other cellular functions.
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Affiliation(s)
- A M de Vos
- Department of Chemistry, University of California, Berkely 94720
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