- 中文名称
KCa2.2 (SK2)抗体
- 英文名字
- KCa2.2 (SK2) Antibody
- 供应商
- Abgent
- 产品货号
- A-AG1136
- 产品报价
- ￥4125/50 ul
- 产品说明书
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- 背景资料
KCa2.2 is a member of the Ca2+-activated K+ channels family with small conductance that includes KCa2.1 (SK1) and KCa2.3 (SK3). The channel is voltage insensitive and is activated by intracellular Ca2+ in the submicromolar range. It has, though, a similar topology to that of voltage-dependent K+ channels (KV channels), that is six transmembrane domains and intracellular N- and C-termini. The functional channel of all the KCa2 family members is a multimeric protein composed of four pore-forming subunits.
KCa2 channels are extremely sensitive to the levels of intracellular Ca2+ and concentrations as low as 300-700 nM can open the channels very rapidly (5-15 ms). Hence, the KCa2 channels are highly sensitive and fast Ca2+ sensors resembling other known Ca2+-binding proteins. This type of Ca2+-dependent activation is achieved by the constitutive binding of the KCa2 channels to calmodulin, a highly expressed Ca2+-binding protein via a calmodulin-binding domain situated at the cytoplasmic C-terminus.
Pharmacologically, the KCa2 channels are the only known targets of the bee venom toxin Apamin, with KCa2.1 being the less sensitive, KCa2.2 the most sensitive and KCa2.3 showing intermediate sensitivity.
KCa2.2 is predominantly expressed in the nervous system although expression in endothelial cells, heart and liver has been described.
KCa2.2 is known to be involved in the regulation of neuronal excitability. They do so mainly via a phenomenon known as after hyperpolarization in which KCa2 channels open in response to increased intracellular Ca2+ concentrations that result from the entry of extracellular Ca2+ through voltage-dependent Ca2+ channels during action potentials. In this way, KCa2 channels effectively form a Ca2+-mediated feedback loop.
- 应用类型
- WB
- 免疫原
- P70604
- 来源宿主
- 反应性
- 保存建议
- 其他
- ABGENT
- 注意
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该页面的中文产品信息的翻译，仅供参考。准确的产品信息请以厂家的英文说明书为准。下单前，请浏览说明书确认。
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