Junctional complexes between the plasma membrane (PM) and endoplasmic/sarcoplasmic reticulum (ER/SR) are a common feature of all excitable cell types and mediate cross talk between cell surface and intracellular ion channels. Junctophilins (JPs) are important components of the junctional complexes. JPs are composed of a carboxy-terminal hydrophobic segment spanning the ER/SR membrane and a remaining cytoplasmic domain that shows specific affinity for the PM. Four JPs have been identified as tissue-specific subtypes derived from different genes: JPH1 is expressed in skeletal muscle, JPH2 is detected throughout all muscle cell types, and JPH3 and JPH4 are predominantly expressed in the brain. In the CNS, both JPH3 and JPH4 are expressed throughout neural sites and contribute to the subsurface cistern formation in neurons. Mice lacking both JPH3 and JPH4 subtypes exhibit serious symptoms such as impaired learning and memory and are accompanied by abnormal nervous functions. A repeat expansion in JPH3 is associated with Huntington disease-like 2. At least two isoforms of JPH3 are known to exist.

Abbiotec坚信与我们的科学家，客户，合作者和分销商社区建立牢固而有意义的合作伙伴关系。我们通过研究合作与社区分享我们的想法，并通过有益于生命科学界的创新和有用的产品来回馈青睐。我们欢迎有关研究或产品创意的讨论，我们将努力为此类讨论提供最有利和最机密的环境。Abbiotec利用专有技术和特殊资源开发自己的产品，以实现高质量的生产和控制。我们还从其他合作伙伴（例如个人科学家，大学外发许可部门和其他生物技术公司）获得产品和想法的许可。被许可的技术或想法被开发为商业产品，并通过我们的营销和销售网络在全球范围内销售。