Calmodulin binds neurogranin
收藏reactome.org2025-01-15 收录
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In the absence of calcium (Ca2+), calmodulin (CALM1) binds to neurogranin (NRGN) (Seeger et al. 2017). NRGN is enriched in dendritic spines where it slows down the diffusion rate of CALM1. NRGN increases the local concentration of CALM1 and enhances Ca2+ sensitivity at the synapse, thereby enhancing synaptic strength. The association between NRGN and CALM1 is dynamic, and NRGN does not sequester CALM1 (Petersen and Gerges 2015). Nrgn knockout mice exhibit impaired synaptic plasticity and spatial learning, with reduced ability to generate activated CaMKII after stimulation (Pak et al. 2000).
在缺乏钙离子(Ca2+)的情况下,钙调蛋白(CALM1)与神经颗粒蛋白(NRGN)结合(Seeger 等人,2017年)。NRGN在树突棘中富集,其中减缓了CALM1的扩散速率。NRGN增加了CALM1的局部浓度,并增强了突触处的Ca2+敏感性,从而增强了突触强度。NRGN与CALM1的关联是动态的,且NRGN不会隔离CALM1(Petersen 和 Gerges,2015年)。Nrgn敲除小鼠表现出突触可塑性和空间学习能力的损害,以及在刺激后生成激活的CaMKII的能力降低(Pak 等人,2000年)。
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