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TBPB is a bitopic ligand, interacting with both the orthosteric site and an allosteric site, at the M₁ mAChR. TBPB activates M(1) through an allosteric site rather than the orthosteric acetylcholine binding site, which is likely critical for its unprecedented selectivity. Whole-cell patch-clamp recordings demonstrated that activation of M(1) by TBPB potentiates NMDA receptor currents in hippocampal pyramidal cells but does not alter excitatory or inhibitory synaptic transmission, responses thought to be mediated by M(2) and M(4). TBPB was efficacious in models predictive of antipsychotic-like activity in rats at doses that did not produce catalepsy or peripheral adverse effects of other mAChR agonists. Finally, TBPB had effects on the processing of the amyloid precursor protein toward the non-amyloidogenic pathway and decreased Abeta production in vitro.
| Molecular Weight | 404.55 |
| Formula | C25H32N4O |
| CAS Number | 634616-95-8 |
| Form | Solid |
| Solubility (25°C) | DMSO 20 mg/mL |
| Storage |
Powder -20°C 3 years ; 4°C 2 years In solvent -80°C 6 months ; -20°C 1 month |
| Related AChR/AChE Products |
|---|
| AT 1001
AT 1001 is a high-affinity and selective antagonist of the α3β4 nicotinic acetylcholine receptor (α3β4 nAChR) with Ki of 2.64 nM. |
| Dihydro-β-erythroidine hydrobromide
Dihydro-β-erythroidine hydrobromide is a potent, orally active, and competitive antagonist of neuronal nAChRs. Dihydro-β-erythroidine hydrobromide shows selectivity for α4β4 and α4β2 nAChRs, with IC50s of 0.19 and 0.37 μM, respectively. |
| Spinosad
Spinosad, a mixture of spinosyns A and D known as fermentation products of a soil actinomycete (Saccharopolyspora spinosa), is a biological neurotoxic insecticide with a broader action spectrum. Spinosad targets the nicotinic acetylcholine receptor (nAChRs) of the insect nervous system. |
| TAE-1
TAE-1 is a potent inhibitor of AChE and BuChE. |
| PE154
PE154 is a potent fluorescent inhibitor of human acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) (IC50s=280 pM and 16 nM, respectively). |
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