Snapin interacts with the N-terminus of regulator of G protein signaling 7.
The N-terminus of regulator of G protein signaling 7 (RGS7) contains a dishevelled/egl-10/pleckstrin (DEP) domain of unknown function. To gain insight into its function, we used yeast two-hybrid analysis to screen a human whole brain cDNA library in order to identify proteins that interact specifically with the N-terminus of human ... RGS7 (amino acid residues 1-248). From this analysis, we identified snapin, a protein associated with the SNARE complex in neurons, as an interactor with the N-terminus of RGS7. Deletion mutation analysis in yeast demonstrated that the interaction between RGS7 and snapin is specific and is mediated primarily by amino acid residues 1-69 of RGS7 (which contains the proximal portion of the DEP domain). The interaction between RGS7 and snapin was also demonstrated in mammalian cells by coimmunoprecipitation and pull-down assays. Our results suggest that RGS7 could play a role in synaptic vesicle exocytosis through its interaction with snapin.
Mesh Terms:
Animals, Base Sequence, Binding Sites, CHO Cells, Carrier Proteins, Cloning, Molecular, Cricetinae, DNA Primers, GTP-Binding Proteins, Humans, Membrane Proteins, Neuropeptides, Peptide Fragments, RGS Proteins, Recombinant Proteins, Saccharomyces cerevisiae, Signal Transduction, Transfection, Vesicular Transport Proteins
Animals, Base Sequence, Binding Sites, CHO Cells, Carrier Proteins, Cloning, Molecular, Cricetinae, DNA Primers, GTP-Binding Proteins, Humans, Membrane Proteins, Neuropeptides, Peptide Fragments, RGS Proteins, Recombinant Proteins, Saccharomyces cerevisiae, Signal Transduction, Transfection, Vesicular Transport Proteins
Biochem. Biophys. Res. Commun.
Date: Apr. 04, 2003
PubMed ID: 12659861
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