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Comparative modeling studies of rat amiloride-sensitive cation channel 1, neuronal isoform b

机译:大鼠阿米洛利敏感阳离子通道1,神经元同工型b的比较建模研究

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Acid-sensing ion channels (ASICs) of the epithelial sodium channel/degenerin (ENaC/DEG) gene family are protongated cation channels. ASICs have two transmembrane segments which are hydrophobic. Various proton-gated ion channels suggest that, ASIC and MDEG probably seems to be the first two members of this family and the genes for the new channels remain to be discovered. The presence of a large extracellular domain between two transmembrane alpha-helices and the short NH2 and COOH terminal cytoplasmic segments, characterizes these proteins. In order to relate the three-dimensional (3D) structure to their physiological function, channel proteins have been the focus of various computational approaches. On the basis of available X-ray structures, structural models of channels may be constructed by homology modeling. Here we present 3D structure of rat Amiloride-sensitive cation channel 1, neuronal isoform B through comparative modeling studies. Our studies will be useful in understanding the biochemical functions and interaction properties in detail.
机译:上皮钠通道/变性蛋白(ENaC / DEG)基因家族的酸敏感离子通道(ASICs)是带阳离子的阳离子通道。 ASIC具有两个疏水的跨膜链段。各种质子门离子通道表明,ASIC和MDEG可能是该家族的前两个成员,新通道的基因仍有待发现。在两个跨膜α-螺旋与短的NH2和COOH末端胞质片段之间存在大的胞外域,这些蛋白质具有特征。为了将三维(3D)结构与其生理功能相关联,通道蛋白已成为各种计算方法的重点。基于可用的X射线结构,可以通过同源性建模来构建通道的结构模型。在这里,我们通过比较建模研究介绍了大鼠Amiloride敏感阳离子通道1,神经元同种型B的3D结构。我们的研究将有助于详细了解生化功能和相互作用特性。

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