Activity-dependent translocation of neurogranin to neuronal nuclei

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Activity-dependent translocation of neurogranin to neuronal nuclei.

Long-term changes of synaptic plasticity depend on protein synthesis and transcription. Ng (neurogranin) is a small protein concentrated at dendrites and spines of forebrain neurons, involved in synaptic plasticity through the regulation of CaM (calmodulin)-mediated signalling. Ng presents a central IQ motif that mediates its binding to CaM and PA (phosphatidic acid) and that can be phosphoryla...

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Activity-Dependent Modification of Intrinsic Neuronal Properties

The processes that develop and maintain the intrinsic electrical properties of neurons are modeled by allowing the maximal strength of membrane conductances to be slowly varying functions of the intracellular calcium concentration. The resulting dynamic regulation of conductances allows model neurons to self-assemble their membrane currents and to react to and recover from external perturbation...

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Leptin-induced cardiomyocyte hypertrophy involves selective caveolae and RhoA/ROCK-dependent p38 MAPK translocation to nuclei.

AIMS Leptin-induced cardiomyocyte hypertrophy is dependent on both RhoA and p38 mitogen-activated protein kinase (p38 MAPK) activation. The present study investigated the role of lipid raft/caveolae in these responses and assessed the nature of p38 MAPK activation in mediating leptin-induced hypertrophy. METHODS AND RESULTS Studies were carried out using cultured neonatal rat ventricular myoc...

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Neuronal activity-dependent regulation of MicroRNAs.

MicroRNAs are non-coding short (~23 nucleotides) RNAs that mediate post-transcriptional regulation through sequence-specific gene silencing. The role of miRNAs in neuronal development, synapse formation and synaptic plasticity has been highlighted. However, the role of neuronal activity on miRNA regulation has been less focused. Neuronal activity-dependent regulation of miRNA may fine-tune gene...

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Transitory and activity-dependent expression of neurogranin in olfactory bulb tufted cells during mouse postnatal development.

Neurogranin (Ng) is a brain-specific postsynaptic calmodulin-binding protein involved in synaptic activity-dependent plasticity. In the adult olfactory bulb (OB), Ng is expressed by a large population of GABAergic interneurons in the granule cell layer. We show here that, during postnatal development, Ng is also expressed by OB neurons in the superficial external plexiform layer (sEPL) and glom...

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ژورنال

عنوان ژورنال: Biochemical Journal

سال: 2009

ISSN: 0264-6021,1470-8728

DOI: 10.1042/bj20091071