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| http://purl.uniprot.org/citations/22496563 | http://www.w3.org/2000/01/rdf-schema#comment | "αkap, a muscle specific anchoring protein encoded within the Camk2a gene, is thought to play a role in targeting multiple calcium/calmodulin kinase II isoforms to specific subcellular locations. Here we demonstrate a novel function of αkap in stabilizing nicotinic acetylcholine receptors (AChRs). Knockdown of αkap expression with shRNA significantly enhanced the degradation of AChR α-subunits (AChRα), leading to fewer and smaller AChR clusters on the surface of differentiated C2C12 myotubes. Mutagenesis and biochemical studies in HEK293T cells revealed that αkap promoted AChRα stability by a ubiquitin-dependent mechanism. In the absence of αkap, AChRα was heavily ubiquitinated, and the number of AChRα was increased by proteasome inhibitors. However, in the presence of αkap, AChRα was less ubiquitinated and proteasome inhibitors had almost no effect on AChRα accumulation. The major sites of AChRα ubiquitination reside within the large intracellular loop and mutations of critical lysine residues in this loop to arginine increased AChRα stability in the absence of αkap. These results provide an unexpected mechanism by which αkap controls receptor trafficking onto the surface of muscle cells and thus the maintenance of postsynaptic receptor density and synaptic function."xsd:string |
| http://purl.uniprot.org/citations/22496563 | http://purl.org/dc/terms/identifier | "doi:10.1523/jneurosci.6477-11.2012"xsd:string |
| http://purl.uniprot.org/citations/22496563 | http://purl.uniprot.org/core/author | "Aittaleb M."xsd:string |
| http://purl.uniprot.org/citations/22496563 | http://purl.uniprot.org/core/author | "Mouslim C."xsd:string |
| http://purl.uniprot.org/citations/22496563 | http://purl.uniprot.org/core/author | "Hume R.I."xsd:string |
| http://purl.uniprot.org/citations/22496563 | http://purl.uniprot.org/core/author | "Akaaboune M."xsd:string |
| http://purl.uniprot.org/citations/22496563 | http://purl.uniprot.org/core/date | "2012"xsd:gYear |
| http://purl.uniprot.org/citations/22496563 | http://purl.uniprot.org/core/name | "J Neurosci"xsd:string |
| http://purl.uniprot.org/citations/22496563 | http://purl.uniprot.org/core/pages | "5177-5185"xsd:string |
| http://purl.uniprot.org/citations/22496563 | http://purl.uniprot.org/core/title | "A role for the calmodulin kinase II-related anchoring protein (alphakap) in maintaining the stability of nicotinic acetylcholine receptors."xsd:string |
| http://purl.uniprot.org/citations/22496563 | http://purl.uniprot.org/core/volume | "32"xsd:string |
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