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Cell-Cell Interactions
Cadherins in Cell Junctions and Disease
Description
Cadherins are cell adhesion proteins that help cells stick together and build tissues. Their name comes from their calcium-dependent binding. Early examples were named E-cadherin, P-cadherin, and N-cadherin after the epithelial, placental, and neuronal cells where they were first found.
Classical...
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Transcript
钙黏蛋白是一类依赖钙离子的细胞黏附分子(CAMs)超家族。
所有钙黏蛋白都具有基本结构,包括一个较小的C端胞质结构域、一个单一的跨膜结构域以及多个细胞外钙黏蛋白(EC)结构域。
这些EC结构域通过柔性的铰链区相互连接,每个铰链区含有三个钙离子结合口袋。
当钙离子结合后,钙黏蛋白变得刚性,从而能够与其他钙黏蛋白发生cis和trans结合。
在顺式结合(cis-binding)中,同一细胞上的钙黏蛋白可相互结合形成簇,而相邻细胞上钙黏蛋白的胞外结构域(EC结构域)之间的相互作用则导致反式结合(trans-binding)。
远离细胞膜的N端胞外结构域...
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