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Growth of new dendritic spines contributes to experience-dependent circuit plasticity in the cerebral cortex. Yet the signaling mechanisms leading to new spine outgrowth remain poorly defined. Increasing evidence supports that the proteasome is an important mediator of activity-dependent neuronal signaling. We therefore tested the role of the proteasome in(More)
Neuronal plasticity depends on plasma membrane Ca(2+) influx, resulting in activity-dependent gene transcription. Calmodulin (CaM) activated by Ca(2+) initiates the nuclear events, but how CaM makes its way to the nucleus has remained elusive. Ma et al. now show that CaMKIIγ transports CaM from cell surface Ca(2+) channels to the nucleus.
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