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3pqz

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Revision as of 08:07, 5 August 2016

Grb7 SH2 with peptide

Structural highlights

3pqz is a 6 chain structure with sequence from Human. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
NonStd Res:
Gene:	GRB7 (HUMAN)
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[GRB7_HUMAN] Adapter protein that interacts with the cytoplasmic domain of numerous receptor kinases and modulates down-stream signaling. Promotes activation of down-stream protein kinases, including STAT3, AKT1, MAPK1 and/or MAPK3. Promotes activation of HRAS. Plays a role in signal transduction in response to EGF. Plays a role in the regulation of cell proliferation and cell migration. Plays a role in the assembly and stability of RNA stress granules. Binds to the 5'UTR of target mRNA molecules and represses translation of target mRNA species, when not phosphorylated. Phosphorylation impairs RNA binding and promotes stress granule disassembly during recovery after cellular stress (By similarity).^[1] ^[2] ^[3] ^[4]

Publication Abstract from PubMed

Growth-receptor-bound protein (Grb)7 is an adapter protein aberrantly overexpressed, along with the erbB-2 receptor in breast cancer and in other cancers. Normally recruited to focal adhesions with a role in cell migration, it is associated with erbB-2 in cancer cells and is found to exacerbate cancer progression via stimulation of cell migration and proliferation. The G7-18NATE peptide (sequence: WFEGYDNTFPC cyclized via a thioether bond) is a nonphosphorylated peptide that was developed for the specific inhibition of Grb7 by blocking its SH2 domain. Cell-permeable versions of G7-18NATE are effective in the reduction of migration and proliferation in Grb7-overexpressing cells. It thus represents a promising starting point for the development of a therapeutic against Grb7. Here, we report the crystal structure of the G7-18NATE peptide in complex with the Grb7-SH2 domain, revealing the structural basis for its interaction. We also report further rounds of phage display that have identified G7-18NATE analogues with micromolar affinity for Grb7-SH2. These peptides retained amino acids F2, G4, and F9, as well as the YDN motif that the structural biology study showed to be the main residues in contact with the Grb7-SH2 domain. Isothermal titration calorimetry measurements reveal similar and better binding affinity of these peptides compared with G7-18NATE. Together, this study facilitates the optimization of second-generation inhibitors of Grb7.

Structural basis of binding by cyclic nonphosphorylated Peptide antagonists of grb7 implicated in breast cancer progression.,Ambaye ND, Pero SC, Gunzburg MJ, Yap M, Clayton DJ, Del Borgo MP, Perlmutter P, Aguilar MI, Shukla GS, Peletskaya E, Cookson MM, Krag DN, Wilce MC, Wilce JA J Mol Biol. 2011 Sep 23;412(3):397-411. Epub 2011 Jul 23. PMID:21802427^[5]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Han DC, Shen TL, Guan JL. Role of Grb7 targeting to focal contacts and its phosphorylation by focal adhesion kinase in regulation of cell migration. J Biol Chem. 2000 Sep 15;275(37):28911-7. PMID:10893408 doi:10.1074/jbc.M001997200
↑ Shen TL, Han DC, Guan JL. Association of Grb7 with phosphoinositides and its role in the regulation of cell migration. J Biol Chem. 2002 Aug 9;277(32):29069-77. Epub 2002 May 20. PMID:12021278 doi:10.1074/jbc.M203085200
↑ Han DC, Shen TL, Miao H, Wang B, Guan JL. EphB1 associates with Grb7 and regulates cell migration. J Biol Chem. 2002 Nov 22;277(47):45655-61. Epub 2002 Sep 9. PMID:12223469 doi:10.1074/jbc.M203165200
↑ Chu PY, Li TK, Ding ST, Lai IR, Shen TL. EGF-induced Grb7 recruits and promotes Ras activity essential for the tumorigenicity of Sk-Br3 breast cancer cells. J Biol Chem. 2010 Sep 17;285(38):29279-85. doi: 10.1074/jbc.C110.114124. Epub, 2010 Jul 9. PMID:20622016 doi:10.1074/jbc.C110.114124
↑ Ambaye ND, Pero SC, Gunzburg MJ, Yap M, Clayton DJ, Del Borgo MP, Perlmutter P, Aguilar MI, Shukla GS, Peletskaya E, Cookson MM, Krag DN, Wilce MC, Wilce JA. Structural basis of binding by cyclic nonphosphorylated Peptide antagonists of grb7 implicated in breast cancer progression. J Mol Biol. 2011 Sep 23;412(3):397-411. Epub 2011 Jul 23. PMID:21802427 doi:10.1016/j.jmb.2011.07.030

1 Structural highlights
2 Function
3 Publication Abstract from PubMed
4 See Also
5 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/3pqz"

@@ Line 1: / Line 1: @@
 ==Grb7 SH2 with peptide==
 <StructureSection load='3pqz' size='340' side='right' caption='[[3pqz]], [[Resolution|resolution]] 2.41&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[3pqz]] is a 6 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3PQZ OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3PQZ FirstGlance]. <br>
+<table><tr><td colspan='2'>[[3pqz]] is a 6 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3PQZ OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3PQZ FirstGlance]. <br>
 </td></tr><tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=CCS:CARBOXYMETHYLATED+CYSTEINE'>CCS</scene></td></tr>
-<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">GRB7 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens])</td></tr>
+<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">GRB7 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</td></tr>
-<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3pqz FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3pqz OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3pqz RCSB], [http://www.ebi.ac.uk/pdbsum/3pqz PDBsum]</span></td></tr>
+<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3pqz FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3pqz OCA], [http://pdbe.org/3pqz PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3pqz RCSB], [http://www.ebi.ac.uk/pdbsum/3pqz PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=3pqz ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 17: / Line 18: @@
 From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 </div>
+<div class="pdbe-citations 3pqz" style="background-color:#fffaf0;"></div>
 ==See Also==
@@ Line 24: / Line 26: @@
 __TOC__
 </StructureSection>
-[[Category: Homo sapiens]]
+[[Category: Human]]
 [[Category: Wilce, J A]]
 [[Category: Binds phosphotyrosine]]

3pqz

From Proteopedia

Revision as of 08:07, 5 August 2016

Grb7 SH2 with peptide

Structural highlights

Function

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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