Small conductance calcium-activated potassium channel protein 2 (UniProt P70604; also known as SK2, SKCa 2, SKCa2, KCa2.2) is encoded by the Kcnn2 gene (Gene ID 54262) in rat species. Small conductance calcium-activated potassium channels mediate cell membrane repolarization following intracellular Ca2+ increase induced by various stimuli, thereby restoring an excited cell back to its resting state. SK2 is involved in afterhyperpolarization (AHP) that follows action potentials in vertebrate neurons. SK2 regulates neuronal excitability by contributing to the slow component of synaptic AHP. Ca2+ activates SK2 through the Ca2+ sensor calmodulin (CaM), which can bind up to four Ca2+ ions. The dynamic coupling between Ca2+ binding to CaM, CaM binding to SK, and the open probability of SK are all essential components of the SK2 activity.，官网链接：https://www.sigmaaldrich.cn/product/mm/mabn1832 默克 科研、开发、生产。 作为生命科学行业的全球领先供应商，我们致力于为科研、生物技术开发和生产，以及制药药物疗法开发和生产提供各类解决方案和服务。

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