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BA6b9 is an allosteric inhibitor targeting the SK4 channel via the CaM-PIP2 binding domain. It interacts with two critical residues, Arg191 and His192, located in the S4-S5 linker to inhibit the SK4 channel, with an IC50 of 8.6 μM (WT SK4). BA6b9 significantly prolongs the effective refractory period (ERP) of the atria and atrioventricular node in isolated rat hearts, reducing the induction of atrial fibrillation (AF), highlighting its potential for arrhythmia research.
Pack Size | Price | Availability | Quantity |
---|---|---|---|
10 mg | Inquiry | 10-14 weeks | |
50 mg | Inquiry | 10-14 weeks |
Description | BA6b9 is an allosteric inhibitor targeting the SK4 channel via the CaM-PIP2 binding domain. It interacts with two critical residues, Arg191 and His192, located in the S4-S5 linker to inhibit the SK4 channel, with an IC50 of 8.6 μM (WT SK4). BA6b9 significantly prolongs the effective refractory period (ERP) of the atria and atrioventricular node in isolated rat hearts, reducing the induction of atrial fibrillation (AF), highlighting its potential for arrhythmia research. |
In vitro | BA6b9 (10 μM) significantly inhibits Ca2+-activated SK4 channels by increasing the EC50 for Ca2+ activation from 65 nM to 435 nM. In the isolated heart model of adult male Sprague-Dawley rats (200-250 g) using Langendorff perfusion, BA6b9 induces a reduction in heart rate, prolongation of the PR interval, and extension of the effective refractory periods (ERP) in the atria and atrioventricular node, while also suppressing carbachol-induced atrial fibrillation (AF). |
Molecular Weight | 233.31 |
Formula | C14H19NO2 |
Cas No. | 609335-29-7 |
Storage | Powder: -20°C for 3 years | In solvent: -80°C for 1 year | Shipping with blue ice. |
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