(UM)
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Dopamine D2, D3, and D4 selective phenylpiperazines as molecular probes to explore the origins of subtype specific receptor bindingEhrlich, Katharina ...Assembling phenylpiperazines with 7a-azaindole via different spacer elements, we developed subtype selective dopamine receptor ligands of types 1a,c, 2a, and 3a preferentially interacting with D4, ... D2, and D3, respectively. To complete this set, the methylthio analogues 2b and 3b exceeding the affinity of 2a and 3a by one order of magnitude and the structural intermediate 1b were synthesized. These chemically similar but biologically divergent target compounds served as molecular probes for radioligand displacement experiments, mutagenesis, and docking studies on homology models based on the recent crystal structure of the beta2-adrenergic receptor. Specific interactions with the highly conserved amino acids Asp3.32 and His6.55 and less conserved residues at positions 2.61, 2.64, 3.28, and 3.29 were identified. Inclusion of a carefully modeled extracellular loop 2 displayed two nonconserved residues in EL2 that differently contribute to ligand binding. Obviously, subtype selectivity is caused by nonconserved but frequently mediated by conserved amino acids.Source: Journal of medicinal chemistry. - ISSN 0022-2623 (Vol. 52, iss. 15, 2009, str. 2923-4935)Type of material - article, component part ; adult, seriousPublish date - 2009Language - englishCOBISS.SI-ID - 120653571
Author
Ehrlich, Katharina |
Götz, Angela |
Bollinger, Stefan, kemija |
Tschammer, Nuška
Topics
genetics |
ligands |
monomers |
peptides and proteins |
receptors
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Database name | Field | Year |
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Ehrlich, Katharina | |
Götz, Angela | |
Bollinger, Stefan, kemija | |
Tschammer, Nuška | 20760 |
Source: Personal bibliographies
and: SICRIS
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