Primary Citation PubMed: 19696737
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An integrated catch-and-hold mechanism activates nicotinic acetylcholine receptors.
(2012) J Gen Physiol 140
PubMed: 22732309 | PubMedCentral: PMC3382718 | DOI: 10.1085/jgp.201210801
: 2WN9 , 2WNL , 2BYN (apo-), 2PGZ , 2W8F , 2W8G , 2XYT , 2WNJ , 2BYQ , 2BR7 , 3C79 , 2BYR , 2XYS , 3GUA , 3C84 , 2WNC , 2XZ6 , 2XZ5 , and 2BYS .
Publication Year: 2012
Design, synthesis, and structure-activity relationships of highly potent 5-HT? receptor ligands.
(2012) J Med Chem 55
PubMed: 23006041 | PubMedCentral: PMC3504484 | DOI: 10.1021/jm300801u
Homology Modeling A model of the 5-HT 3 A receptor binding site was constructed by homology modeling using MOE (version 2010.10, Chemical Computing Group Montreal), 50 based on the tropisetron bound A... hBP X-ray crystal structure determined at 2.20 Å resolution (PDB code: 2WNC).
A homology model of the 5-HT 3 A receptor binding site was constructed using the tropisetron bound AChBP crystal structure (PDB ID: 2WNC ) as a template.
Structural waters located in this binding pocket of the 2WNC crystal structure form a conserved protein–ligand H-bond interaction network in several other AChBP crystals containing small competitive antagonists (e.g., 2BYR , 2PGZ , 2BYS , 2XYT ( 44 )), and were included in the 5-HT 3 A receptor model.
(a) Overlay of the waters participating in the structural water network in several different AChBP crystal structures (red: 2WNC ; blue: 2BYR ; cyan: 2PGZ ; green: 2BYS ; yellow: 2XYT ).
Structural basis of ligand recognition in 5-HT3 receptors.
(2013) EMBO Rep 14
PubMed: 23196367 | PubMedCentral: PMC3537142 | DOI: 10.1038/embor.2012.189
Similar to the complex with tropisetron (pdb code 2wnc) and nicotinic receptor ligands, the tropane nitrogen of granisetron forms a hydrogen bond with the carbonyl oxygen of W145.
Publication Year: 2013
Structure-activity relationships of quinoxaline-based 5-HT3A and 5-HT3AB receptor-selective ligands.
(2013) ChemMedChem 8
PubMed: 23640722 | PubMedCentral: PMC4063337 | DOI: 10.1002/cmdc.201300032
Structural waters located in the binding pocket of the original crystal structure (PDB code: 2WNC) 19 form a conserved protein–ligand hydrogen bond interaction network in several other AChBP c... ystals (e.g., 2BYR, 2PGZ, 2BYS, 2XYT) and were included in the 5-HT 3 AB receptor model.
Homology models were based on a tropisetron-bound AChBP crystal structure (PDB code: 2WNC) as no quinoxaline-bound Cys-loop receptor structure has been solved to date, and tropisetron is the closest structurally related compound to those described here (Figure 3 ).
The binding characteristics and orientation of a novel radioligand with distinct properties at 5-HT3A and 5-HT3AB receptors.
(2014) Neuropharmacology 86
PubMed: 25174552 | PubMedCentral: PMC4220016 | DOI: 10.1016/j.neuropharm.2014.08.008
In the 5HTBP crystal structure granisetron does not extend towards loop E, but instead lies horizontally between loops B and D, similar to the orientations of the closely related ligands tropisetron (... WNC) and cocaine (2PGZ) in AChBP.
(5) k on = k obs − k off [ L ] 2.6 Homology modelling The protein sequence of the human 5-HT3A subunit (accession number; P46098) was aligned with a tropisetron bound AChBP template (PDB ID; 2WNC) using FUGUE.
Publication Year: 2014
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