Biological Information
Background Information:
Voltage-gated calcium channels mediate calcium influx in response to membrane depolarization and regulate intracellular processes such as contraction, secretion, neurotransmission, and gene expression. They are members of a gene superfamily of transmembrane ion channel proteins that includes voltage-gated potassium and sodium channels. Pharmacology of the three families of calcium channels is quite distinct. Type L calcium channel blockers are used in the therapy of cardiovascular disease. Of these, phenylalkyamines are intracellular pore blockers, closely apposed to the dihydropyridine receptor and share some common amino acid residues. Dihydropyridines can be channel activators or inhibitors and, therefore, are thought to act allosterically to shift the channel toward the open or closed state, rather than by occluding the pore. Benzothiazepines are thought to bind to a third receptor site where the required amino acids for binding overlap extensively with those for phenylalkylamine binding.
Family:
Ion Channel
Sub Family:
Calcium
Class:
Voltage-Gated
Protein Name:
Cav1.2 (L-type)
Uniprot Number:
Q13936
Gene Name:
CACNA1C
Gene ID:
775
Gene Aliases:
Cav1.2|CACH2|CACN2|TS|LQT8
Organism:
Rat
Assay Information
Assay Type:
Biochemical
Assay Sub Type:
Binding
Detection Method:
Radiometry
Measured Response:
Scintillation
Testing Information
Procedure Summary:
Cerebral cortices of Wistar derived rats weighing 175 ± 25 g are used to prepare membranes in Tris-HCl buffer pH 7.4. A 2.5 mg‡ aliquot is incubated with 0.1 nM [³H]Nitrendipine for 90 minutes at 25℃. Non-specific binding is estimated in the presence of 1 μM nitrendipine. Membranes are filtered and washed, the filters are then counted to determine [³H]Nitrendipine specifically bound. Compounds are screened at 10 μM.
Note: ‡Membrane protein may change from lot to lot, the concentration used will be adjusted if necessary.
Ligand:
[³H] Nitrendipine
Ligand Kd (nM):
0.18
Ligand Concentration:
0.1 nM
Non Specific:
1 µM Nitrendipine
Incubation:
90 min at 25°C
Control Inhibitor:
Nitrendipine
Criteria For Significance:
≥ 50% of max stimulation or inhibition
Test Concentration / Dose:
Suggested concentration for initial testing is 10 uM
Test Sample Requirements:
Minimum for 1) Screen: 25 μl of 10 mM stock -OR- 1 mg (pre-weighed). 2) Dose Response: 60 μl of 10 mM stock -OR- 1 mg (pre-weighed).
Minimum Order Quantity:
2
Turnaround Time
Standard:
10 Business Days
Reference Compound Data
Clinical Relevance
Therapeutic Area:
Cardiovascular
Additional Information
Brand:
LeadHunter
Testing Location:
Taiwan - Taipei
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