1jyr
From Proteopedia
(Difference between revisions)
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<StructureSection load='1jyr' size='340' side='right'caption='[[1jyr]], [[Resolution|resolution]] 1.55Å' scene=''> | <StructureSection load='1jyr' size='340' side='right'caption='[[1jyr]], [[Resolution|resolution]] 1.55Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
| - | <table><tr><td colspan='2'>[[1jyr]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/ | + | <table><tr><td colspan='2'>[[1jyr]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] and [https://en.wikipedia.org/wiki/Synthetic_construct Synthetic construct]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1JYR OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1JYR FirstGlance]. <br> |
| - | </td></tr><tr id=' | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.55Å</td></tr> |
| - | <tr id=' | + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=PTR:O-PHOSPHOTYROSINE'>PTR</scene></td></tr> |
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1jyr FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1jyr OCA], [https://pdbe.org/1jyr PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1jyr RCSB], [https://www.ebi.ac.uk/pdbsum/1jyr PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1jyr ProSAT]</span></td></tr> | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1jyr FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1jyr OCA], [https://pdbe.org/1jyr PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1jyr RCSB], [https://www.ebi.ac.uk/pdbsum/1jyr PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1jyr ProSAT]</span></td></tr> | ||
</table> | </table> | ||
== Function == | == Function == | ||
| - | + | [https://www.uniprot.org/uniprot/GRB2_HUMAN GRB2_HUMAN] Adapter protein that provides a critical link between cell surface growth factor receptors and the Ras signaling pathway.<ref>PMID:1322798</ref> <ref>PMID:8178156</ref> <ref>PMID:19815557</ref> 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.<ref>PMID:1322798</ref> <ref>PMID:8178156</ref> <ref>PMID:19815557</ref> | |
== Evolutionary Conservation == | == Evolutionary Conservation == | ||
[[Image:Consurf_key_small.gif|200px|right]] | [[Image:Consurf_key_small.gif|200px|right]] | ||
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</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1jyr ConSurf]. | </jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1jyr ConSurf]. | ||
<div style="clear:both"></div> | <div style="clear:both"></div> | ||
| - | <div style="background-color:#fffaf0;"> | ||
| - | == Publication Abstract from PubMed == | ||
| - | The activation of growth factor receptors induces phosphorylation of tyrosine residues in its C-terminal part, creating binding sites for SH2 domain-containing proteins. Grb2 is a protein that recruits Sos, the exchange factor for Ras. Recruitment of Sos allows for Ras activation and subsequent signal transmission. This promotes translocation of MAP kinases into the nucleus and activation of early transcription factors. Grb2, a 25 kDa protein, is composed of one SH2 domain surrounded by two SH3 domains. The SH2 domain of Grb2 binds to class II phosphotyrosyl peptides with the consensus sequence pYXNX. Thus, Grb2 is a good example of a bifunctional adaptor protein that brings proteins into close proximity, allowing signal transduction through proteins located in different compartments.To explore the interactions between Grb2 and phosphorylated ligands, we have solved the crystal structure of complexes between the Grb2-SH2 domain and peptides corresponding to Shc-derived sequences. Two structures are described: the Grb2-SH2 domain in complex with PSpYVNVQN at 1.5 A; and the Grb2-SH2 domain in complex with mAZ*-pY-(alphaMe)pY-N-NH2 pseudo-peptide, at 2 A. Both are compared to an unliganded SH2 structure determined at 2.7 A which, interestingly enough, forms a dimer through two swapping subdomains from two symmetry-related molecules. The nanomolar affinity of the mAZ-pY-(alphaMe)pY-N-NH2 pseudo-peptide for Grb2-SH2 is related to new interactions with non- conserved residues.The design of Grb2-SH2 domain inhibitors that prevent interaction with tyrosine kinase proteins or other adaptors like Shc or IRS1 should provide a means to interrupt the Ras signaling pathway. Newly synthesized pseudo-peptides exhibit nanomolar affinities for the Grb2-SH2 domain. It will then be possible to design new inhibitors with similar affinity and simpler chemical structures. | ||
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| - | Crystal structures of the SH2 domain of Grb2: highlight on the binding of a new high-affinity inhibitor.,Nioche P, Liu WQ, Broutin I, Charbonnier F, Latreille MT, Vidal M, Roques B, Garbay C, Ducruix A J Mol Biol. 2002 Feb 1;315(5):1167-77. PMID:11827484<ref>PMID:11827484</ref> | ||
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| - | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
| - | </div> | ||
| - | <div class="pdbe-citations 1jyr" style="background-color:#fffaf0;"></div> | ||
==See Also== | ==See Also== | ||
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__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
| - | [[Category: | + | [[Category: Homo sapiens]] |
[[Category: Large Structures]] | [[Category: Large Structures]] | ||
| - | [[Category: Broutin | + | [[Category: Synthetic construct]] |
| - | [[Category: Charbonnier | + | [[Category: Broutin I]] |
| - | [[Category: Ducruix | + | [[Category: Charbonnier F]] |
| - | [[Category: Garbay | + | [[Category: Ducruix A]] |
| - | [[Category: Latreille | + | [[Category: Garbay C]] |
| - | [[Category: Liu | + | [[Category: Latreille M-T]] |
| - | [[Category: Nioche | + | [[Category: Liu W-Q]] |
| - | [[Category: Roques | + | [[Category: Nioche P]] |
| - | [[Category: Vidal | + | [[Category: Roques B]] |
| - | + | [[Category: Vidal M]] | |
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Revision as of 07:56, 3 April 2024
Xray Structure of Grb2 SH2 Domain Complexed with a Phosphorylated Peptide
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Categories: Homo sapiens | Large Structures | Synthetic construct | Broutin I | Charbonnier F | Ducruix A | Garbay C | Latreille M-T | Liu W-Q | Nioche P | Roques B | Vidal M
