Words similar to achbp
Example sentences for: achbp
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All residues in the close vicinity of this ligand were confirmed experimentally as being part of the acetylcholine binding pocket [ 6 ] . While the homology between AChBP and the nAChR subunits is relatively low (22 % sequence identity, for instance, between alpha4 and AChBP), and the overall model needs to be refined, 72% of the AChBP residues in contact with HEPES are identical in the alpha4-beta2 nAChR (Figure 1), and the predicted conformation of the agonist binding pocket of nAChR is expected to be accurate.
R91, E106, F107, W183 and several residues adjacent to the M1 region have all been demonstrated to alter the action of 5-HT and/or m CPBG [ 20 21 25 26 ] . Within the crystal structure of the AChBP, homologous residues are located in the apparent binding site [ 24 ] . The effects of agonist on the 5-HT 3 R are mediated by their interaction with these binding site residues, resulting in stable receptor conformations, including the channel open state.
For example, amino acids homologous to Y142 and W183 (R104 and W143 respectively) are in close proximity in the AChBP, although on complementary faces of the receptor subunits [ 24 ] . Spier et.
We also docked HEPES to the receptors, since this ligand was found in the crystal structure of AChBP.
The interaction is included in the model based on structural information obtained from the crystal structure of AChBP [ 27 ] . The region of this protein homologous to loop E and loop D of the 5-HT 3A receptor suggests a loop structure from Y140 to Y152 and a 3-residue turn containing a glycine at position 147 and the β-strand from W89 through Y93 oriented as shown in Figure 6. The orientation of lerisetron between W89 and Y142A as shown would enable the N-benzyl group to be positioned in close proximity to R91.
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