1ddw
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(New page: 200px<br /><applet load="1ddw" size="450" color="white" frame="true" align="right" spinBox="true" caption="1ddw, resolution 1.70Å" /> '''HOMER EVH1 DOMAIN UN...)
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Revision as of 11:04, 20 November 2007
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HOMER EVH1 DOMAIN UNLIGANDED
Overview
Homer EVH1 (Ena/VASP Homology 1) domains interact with proline-rich motifs, in the cytoplasmic regions of group 1 metabotropic glutamate receptors, (mGluRs), inositol-1,4,5-trisphosphate receptors (IP3Rs), and Shank, proteins. We have determined the crystal structure of the Homer EVH1, domain complexed with a peptide from mGluR (TPPSPF). In contrast to other, EVH1 domains, the bound mGluR ligand assumes an unusual conformation in, which the side chains of the Ser-Pro tandem are oriented away from the, Homer surface, and the Phe forms a unique contact. This unusual binding, mode rationalizes conserved features of both Homer and Homer ligands that, are not shared by other EVH1 domains. Site-directed mutagenesis confirms, the importance of specific Homer residues for ligand binding. These, results establish a molecular basis for understanding the biological, properties of Homer-ligand complexes.
About this Structure
1DDW is a Single protein structure of sequence from Rattus norvegicus. Full crystallographic information is available from OCA.
Reference
Structure of the Homer EVH1 domain-peptide complex reveals a new twist in polyproline recognition., Beneken J, Tu JC, Xiao B, Nuriya M, Yuan JP, Worley PF, Leahy DJ, Neuron. 2000 Apr;26(1):143-54. PMID:10798399
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