Structural Basis for Specific Recognition of an RxxK-containing SLP-76 peptide by the Gads C-terminal SH3 domainStructural Basis for Specific Recognition of an RxxK-containing SLP-76 peptide by the Gads C-terminal SH3 domain
Structural highlights
1h3h is a 2 chain structure. Full experimental information is available from OCA. For a guided tour on the structure components use FirstGlance.
[GRP2_MOUSE] Functions as a calcium- and DAG-regulated nucleotide exchange factor specifically activating Rap through the exchange of bound GDP for GTP. May also activates other GTPases such as RRAS, RRAS2, NRAS, KRAS but not HRAS. Functions in aggregation of platelets and adhesion of T-lymphocytes and neutrophils probably through inside-out integrin activation. May function in the muscarinic acetylcholine receptor M1/CHRM1 signaling pathway.[1][2][3][4][5][6][7][8][9] [LCP2_HUMAN] Involved in T-cell antigen receptor mediated signaling.
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
The SH3 domain, which normally recognizes proline-rich sequences, has the potential to bind motifs with an RxxK consensus. To explore this novel specificity, we have determined the solution structure of the Gads T cell adaptor C-terminal SH3 domain in complex with an RSTK-containing peptide, representing its physiological binding site on the SLP-76 docking protein. The SLP-76 peptide engages four distinct binding pockets on the surface of the Gads SH3 domain and upon binding adopts a unique structure characterized by a right-handed 3(10) helix at the RSTK locus, in contrast to the left-handed polyproline type II helix formed by canonical proline-rich SH3 ligands. The structure, and supporting mutagenesis and peptide binding data, reveal a novel mode of ligand recognition by SH3 domains.
Structural basis for specific binding of the Gads SH3 domain to an RxxK motif-containing SLP-76 peptide: a novel mode of peptide recognition.,Liu Q, Berry D, Nash P, Pawson T, McGlade CJ, Li SS Mol Cell. 2003 Feb;11(2):471-81. PMID:12620234[10]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
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↑Liu Q, Berry D, Nash P, Pawson T, McGlade CJ, Li SS. Structural basis for specific binding of the Gads SH3 domain to an RxxK motif-containing SLP-76 peptide: a novel mode of peptide recognition. Mol Cell. 2003 Feb;11(2):471-81. PMID:12620234
