期刊
BIOORGANIC & MEDICINAL CHEMISTRY LETTERS
卷 18, 期 15, 页码 4312-4315出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.bmcl.2008.06.087
关键词
nucleoside; G protein-coupled receptor; dimerization; homology modeling; purines; polymerbound drug; functionalized congener
资金
- Intramural NIH HHS [Z01 DK031115-24, Z01 DK031117-20, Z01 DK031126-01] Funding Source: Medline
The theoretical possibility of bivalent binding of a dendrimer, covalently appended with multiple copies of a small ligand, to a homodimer of a G protein-coupled receptor was investigated with a molecular modeling approach. A molecular model was constructed of a third generation (G3) poly(amidoamine) (PAMAM) dendrimer condensed with multiple copies of the potent A(2A) adenosine receptor agonist CGS21680. The dendrimer was bound to an A(2A) adenosine receptor homodimer. Two units of the nucleoside CGS21680 could occupy the A(2A) receptor homodimer simultaneously. The binding mode of CGS21680 moieties linked to the PAMAM dendrimer and docked to the A(2A) receptor was found to be similar to the binding mode of a monomeric CGS21680 ligand. Published by Elsevier Ltd.
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