rdf:type |
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lifeskim:mentions |
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pubmed:issue |
10
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pubmed:dateCreated |
2002-5-13
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pubmed:abstractText |
Membrane-bound receptors such as tyrosine kinases and ionotropic receptors are associated with large protein networks structured by protein-protein interactions involving multidomain proteins. Although these networks have emerged as a general mechanism of cellular signalling, much less is known about the protein complexes associated with G-protein-coupled receptors (GPCRs). Using a proteomic approach based on peptide affinity chromatography followed by mass spectrometry and immunoblotting, we have identified 15 proteins that interact with the C- terminal tail of the 5-hydroxytryptamine 2C (5-HT(2C)) receptor, a GPCR. These proteins include several synaptic multidomain proteins containing one or several PDZ domains (PSD95 and the proteins of the tripartite complex Veli3-CASK-Mint1), proteins of the actin/spectrin cytoskeleton and signalling proteins. Coimmunoprecipitation experiments showed that 5-HT(2C) receptors interact with PSD95 and the Veli3-CASK-Mint1 complex in vivo. Electron microscopy also indicated a synaptic enrichment of Veli3 and 5-HT(2C) receptors and their colocalization in microvilli of choroidal cells. These results indicate that the 5-HT(2C) receptor is associated with protein networks that are important for its synaptic localization and its coupling to the signalling machinery.
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pubmed:commentsCorrections |
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pubmed:language |
eng
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pubmed:journal |
|
pubmed:citationSubset |
IM
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pubmed:chemical |
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pubmed:status |
MEDLINE
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pubmed:month |
May
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pubmed:issn |
0261-4189
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pubmed:author |
|
pubmed:issnType |
Print
|
pubmed:day |
15
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pubmed:volume |
21
|
pubmed:owner |
NLM
|
pubmed:authorsComplete |
Y
|
pubmed:pagination |
2332-42
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pubmed:dateRevised |
2009-11-18
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pubmed:meshHeading |
pubmed-meshheading:12006486-Animals,
pubmed-meshheading:12006486-Mice,
pubmed-meshheading:12006486-Choroid Plexus,
pubmed-meshheading:12006486-Peptide Fragments,
pubmed-meshheading:12006486-Synapses,
pubmed-meshheading:12006486-Nerve Tissue Proteins,
pubmed-meshheading:12006486-Amino Acid Sequence,
pubmed-meshheading:12006486-Molecular Sequence Data,
pubmed-meshheading:12006486-Electrophoresis, Gel, Two-Dimensional,
pubmed-meshheading:12006486-Receptors, Serotonin,
pubmed-meshheading:12006486-Transfection,
pubmed-meshheading:12006486-GTP-Binding Proteins,
pubmed-meshheading:12006486-Spectrometry, Mass, Matrix-Assisted Laser...
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