1gbq

SOLUTION NMR STRUCTURE OF THE GRB2 N-TERMINAL SH3 DOMAIN COMPLEXED WITH A TEN-RESIDUE PEPTIDE DERIVED FROM SOS DIRECT REFINEMENT AGAINST NOES, J-COUPLINGS, AND 1H AND 13C CHEMICAL SHIFTS, MINIMIZED AVERAGE STRUCTURESOLUTION NMR STRUCTURE OF THE GRB2 N-TERMINAL SH3 DOMAIN COMPLEXED WITH A TEN-RESIDUE PEPTIDE DERIVED FROM SOS DIRECT REFINEMENT AGAINST NOES, J-COUPLINGS, AND 1H AND 13C CHEMICAL SHIFTS, MINIMIZED AVERAGE STRUCTURE

Structural highlights 1gbq is a 2 chain structure with sequence from Mus musculus. Full experimental information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: Solution NMR, 1 model Ligands: , Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function GRB2_MOUSE Adapter protein that provides a critical link between cell surface growth factor receptors and the Ras signaling pathway. Isoform 2 does not bind to phosphorylated epidermal growth factor receptor (EGFR) but inhibits EGF-induced. transactivation of a RAS-responsive element. Isoform 2 acts as a dominant negative protein over GRB2 and by suppressing proliferative signals, may trigger active programmed cell death (By similarity). Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMed Refined ensembles of solution structures have been calculated for the N-terminal SH3 domain of Grb2 (N-SH3) complexed with the ac-VPPPVPPRRR-nh2 peptide derived from residues 1135 to 1144 of the mouse SOS-1 sequence. NMR spectra obtained from different combinations of both 13C-15N-labeled and unlabeled N-SH3 and SOS peptide fragment were used to obtain stereo-assignments for pro-chiral groups of the peptide, angle restraints via heteronuclear coupling constants, and complete 1H, 13C, and 15N resonance assignments for both molecules. One ensemble of structures was calculated using conventional methods while a second ensemble was generated by including additional direct refinements against both 1H and 13C(alpha)/13C(beta) chemical shifts. In both ensembles, the protein:peptide interface is highly resolved, reflecting the inclusion of 110 inter-molecular nuclear Overhauser enhancement (NOE) distance restraints. The first and second peptide-binding sub-sites of N-SH3 interact with structurally well-defined portions of the peptide. These interactions include hydrogen bonds and extensive hydrophobic contacts. In the third highly acidic sub-site, the conformation of the peptide Arg8 side-chain is partially ordered by a set of NOE restraints to the Trp36 ring protons. Overall, several lines of evidence point to dynamical averaging of peptide and N-SH3 side-chain conformations in the third subsite. These conformations are characterized by transient charge stabilized hydrogen bond interactions between the peptide arginine side-chain hydrogen bond donors and either single, or possibly multiple, acceptor(s) in the third peptide-binding sub-site. Solution structure of the Grb2 N-terminal SH3 domain complexed with a ten-residue peptide derived from SOS: direct refinement against NOEs, J-couplings and 1H and 13C chemical shifts.,Wittekind M, Mapelli C, Lee V, Goldfarb V, Friedrichs MS, Meyers CA, Mueller L J Mol Biol. 1997 Apr 11;267(4):933-52. PMID:9135122 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Growth factor receptor-bound proteins 3D structures

spinqualitylabelsall models 1gbq Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image