Apamin
Tocris Bioscience, part of Bio-Techne | Catalog # 1652
KCa2 (SK) channel blocker
Key Product Details
Description
KCa2 (SK) channel blocker
Product Description
Apamin is a potent and highly selective inhibitor of small-conductance Ca2+-activated K+-channels (KCa2, SK) (IC50 values are 87.7 pM, 2.3 nM and 4.1 nM for KCa2.2, KCa2.3 and KCa2.1 channels, respectively). Reduces release and mRNA expression of inflammatory cytokines TNFα and IL-6. In models of kidney and cardiovascular disease apamin ameliorates tissue injury and dysfunction. Brain penetrant, blocks medium after-hyperpolarization in vitro, reduces neuroinflammation, increases microglia node contacts and Purkinje cell instananeous firing frequency.Product Specifications
Molecular Weight
2027.34
Formula
C79H131N31O24S4
Storage
Store at -20°C
Purity
≥95% (HPLC)
CAS Number
24345-16-2
PubChem ID
16133797
InChI Key
YVIIHEKJCKCXOB-STYWVVQQSA-N
SMILES
[H]N[C@H]1CSSC[C@@H]2NC(=O)[C@H](CC(C)C)NC(=O)[C@H](C)NC(=O)[C@@H](NC(=O)[C@H](CCC(O)=O)NC(=O)[C@@H]3CCCN3C(=O)[C@H](C)NC(=O)[C@H](CCCCN)NC(=O)[C@H](CSSC[C@H](NC(=O)[C@H](CCCNC(N)=N)NC(=O)[C@H](CCCNC(N)=N)NC(=O)[C@H](C)NC2=O)C(=O)N[C@@H](CCC(N)=O)C(=O)N[C@@H](CCC(N)=O)C(=O)N[C@@H](CC2=CNC=N2)C(N)=O)NC(=O)[C@H](CC(N)=O)NC1=O)[C@@H](C)O
The technical data provided above is for guidance only. For batch specific data refer to the Certificate of Analysis.
Solubility
| Solubility | Soluble to 1mg/ml in water |
Calculators
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Background References
References are publications that support the biological activity of the product.
- Kim Antioxidative, antiapoptotic, and anti-inflammatory effects of apamin in a murine model of lipopolysaccharide-induced acute kidney injury. Molecules 2020 PMID: 33287398
- Ronzano Microglia-neuron interaction at nodes of Ranvier depends on neuronal activity through potassium release and contributes to remyelination. Nat.Commun. 2021 PMID: 34471138
- van der Staay Behavioral effects of apamin, a selective inhibitor of the SKCa-channel, in mice and rats. Neurosci.Biobehav.Rev. 1999 PMID: 10643819
- Strong Potassium channel toxins. Pharmacol.Ther. 1990 PMID: 2181489
- Stocker Matching molecules to function: neuronal Ca2+-activated K+ channels and afterhyperpolarizations. Toxicon 2004 PMID: 15208027
- Habermann Apamin. Pharmacol.Ther. 1984 PMID: 6095335
Product Specific Notices for Apamin
For research use only
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