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Identification of a Potential Regulator of the Gap Junction Protein Pannexin1

机译:缝隙连接蛋白Pannexin1的潜在调节剂的鉴定。

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Recent studies have revealed a second class of gap-junction-forming proteins in vertebrates. These genes are termed pannexins, and it has been suggested that they perform similar functions as connexins. Pannexin1 is expressed in diverse tissues including the central nervous system and seems to form gap junction channels in the Xenopus oocyte expression system. Since protein interacting partners have frequently been described for connexins, the most prominent family of gap junction forming proteins, we thus started to search for candidate genes of pannexin interacting partners. Kv?3, a protein belonging to the family of regulatory ?-subunits of the voltage-dependent potassium channels, was identified as a binding partner of pannexin1 in an E. coli two-hybrid system. This result was verified by confocal laser scanning microscopy using double transfected Neuro2A cells. The colocalization of both proteins at the plasma membrane is suggestive of functional interaction.
机译:最近的研究揭示了脊椎动物中第二类形成间隙连接的蛋白质。这些基因被称为泛新蛋白,并且已经暗示它们执行与连接蛋白相似的功能。 Pannexin1在包括中枢神经系统在内的各种组织中表达,似乎在非洲爪蟾卵母细胞表达系统中形成间隙连接通道。由于蛋白相互作用伴侣经常被描述为连接蛋白(间隙连接形成蛋白的最主要家族),因此我们开始寻找pannexin相互作用伴侣的候选基因。属于电压依赖性钾通道的调节性β-亚基家族的一种蛋白质Kv?3被鉴定为大肠埃希氏菌双杂交系统中pannexin1的结合伴侣。使用双转染的Neuro2A细胞通过共聚焦激光扫描显微镜验证了该结果。两种蛋白在质膜上的共定位提示功能相互作用。

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