LRE1 is a selective allosteric inhibitor of soluble adenylyl cyclase (sAC), a ubiquitously expressed, essential component of cAMP-signaling. In contrast to G-protein-regulated transmembrane adenylyl cyclase, soluble adenylyl cyclase is directly activated by calcium and carbonate, and is dispersed throughout the cell cytoplasm. LRE1 was found to bind to the bicarbonate activator binding site. It inhibited cAMP accumulation in 4-4 cells with an IC50 of 11 μM, similar to that of KH7 and without its cellular toxicity.
Molecular Weight | 280.78 |
Formula | C12H13ClN4S |
CAS Number | 1252362-53-0 |
Solubility (25°C) | DMSO: 10 mg/mL |
Storage |
Powder -20°C 3 years ; 4°C 2 years In solvent -80°C 6 months ; -20°C 1 month |
Species | Mouse | Rat | Rabbit | Guinea pig | Hamster | Dog |
Weight (kg) | 0.02 | 0.15 | 1.8 | 0.4 | 0.08 | 10 |
Body Surface Area (m2) | 0.007 | 0.025 | 0.15 | 0.05 | 0.02 | 0.5 |
Km factor | 3 | 6 | 12 | 8 | 5 | 20 |
Animal A (mg/kg) = Animal B (mg/kg) multiplied by | Animal B Km |
Animal A Km |
For example, to modify the dose of Compound A used for a mouse (20 mg/kg) to a dose based on the BSA for a rat, multiply 20 mg/kg by the Km factor for a mouse and then divide by the Km factor for a rat. This calculation results in a rat equivalent dose for Compound A of 10 mg/kg.
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