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4p9v

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Revision as of 17:48, 14 August 2019

Grb2 SH2 complexed with a pTyr-Ac6cN-Asn tripeptide

Structural highlights

4p9v is a 2 chain structure. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:
NonStd Res:	, , ,
Related:	3s8o, 4p9z
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[GRB2_HUMAN] Adapter protein that provides a critical link between cell surface growth factor receptors and the Ras signaling pathway.^[1] ^[2] ^[3] 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.^[4] ^[5] ^[6]

Publication Abstract from PubMed

In order to probe the energetics associated with a putative cation-pi interaction, thermodynamic parameters are determined for complex formation between the Grb2 SH2 domain and tripeptide derivatives of RCO-pTyr-Ac6c-Asn wherein the R group is varied to include different alkyl, cycloalkyl, and aryl groups. Although an indole ring is reputed to have the strongest interaction with a guanidinium ion, binding free energies, DeltaG degrees , for derivatives of RCO-pTyr-Ac6c-Asn bearing cyclohexyl and phenyl groups were slightly more favorable than their indolyl analog. Crystallographic analysis of two complexes reveals that test ligands bind in similar poses with the notable exception of the relative orientation and proximity of the phenyl and indolyl rings relative to an arginine residue of the domain. These spatial orientations are consistent with those observed in other cation-pi interactions, but there is no net energetic benefit to such an interaction in this biological system. Accordingly, although cation-pi interactions are well documented as important noncovalent forces in molecular recognition, the energetics of such interactions may be mitigated by other nonbonded interactions and solvation effects in protein-ligand associations.

Protein-ligand interactions: Probing the energetics of a putative cation-pi interaction.,Myslinski JM, Clements JH, Martin SF Bioorg Med Chem Lett. 2014 Jul 15;24(14):3164-7. doi: 10.1016/j.bmcl.2014.04.114., Epub 2014 May 9. PMID:24856058^[7]

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

References

↑ Lowenstein EJ, Daly RJ, Batzer AG, Li W, Margolis B, Lammers R, Ullrich A, Skolnik EY, Bar-Sagi D, Schlessinger J. The SH2 and SH3 domain-containing protein GRB2 links receptor tyrosine kinases to ras signaling. Cell. 1992 Aug 7;70(3):431-42. PMID:1322798
↑ Fath I, Schweighoffer F, Rey I, Multon MC, Boiziau J, Duchesne M, Tocque B. Cloning of a Grb2 isoform with apoptotic properties. Science. 1994 May 13;264(5161):971-4. PMID:8178156
↑ Pao-Chun L, Chan PM, Chan W, Manser E. Cytoplasmic ACK1 interaction with multiple receptor tyrosine kinases is mediated by Grb2: an analysis of ACK1 effects on Axl signaling. J Biol Chem. 2009 Dec 11;284(50):34954-63. doi: 10.1074/jbc.M109.072660. Epub, 2009 Oct 8. PMID:19815557 doi:10.1074/jbc.M109.072660
↑ Lowenstein EJ, Daly RJ, Batzer AG, Li W, Margolis B, Lammers R, Ullrich A, Skolnik EY, Bar-Sagi D, Schlessinger J. The SH2 and SH3 domain-containing protein GRB2 links receptor tyrosine kinases to ras signaling. Cell. 1992 Aug 7;70(3):431-42. PMID:1322798
↑ Fath I, Schweighoffer F, Rey I, Multon MC, Boiziau J, Duchesne M, Tocque B. Cloning of a Grb2 isoform with apoptotic properties. Science. 1994 May 13;264(5161):971-4. PMID:8178156
↑ Pao-Chun L, Chan PM, Chan W, Manser E. Cytoplasmic ACK1 interaction with multiple receptor tyrosine kinases is mediated by Grb2: an analysis of ACK1 effects on Axl signaling. J Biol Chem. 2009 Dec 11;284(50):34954-63. doi: 10.1074/jbc.M109.072660. Epub, 2009 Oct 8. PMID:19815557 doi:10.1074/jbc.M109.072660
↑ Myslinski JM, Clements JH, Martin SF. Protein-ligand interactions: Probing the energetics of a putative cation-pi interaction. Bioorg Med Chem Lett. 2014 Jul 15;24(14):3164-7. doi: 10.1016/j.bmcl.2014.04.114., Epub 2014 May 9. PMID:24856058 doi:http://dx.doi.org/10.1016/j.bmcl.2014.04.114

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/4p9v"

@@ Line 1: / Line 1: @@
 ==Grb2 SH2 complexed with a pTyr-Ac6cN-Asn tripeptide==
-<StructureSection load='4p9v' size='340' side='right' caption='[[4p9v]], [[Resolution|resolution]] 1.64&Aring;' scene=''>
+<StructureSection load='4p9v' size='340' side='right'caption='[[4p9v]], [[Resolution|resolution]] 1.64&Aring;' scene=''>
 == Structural highlights ==
 <table><tr><td colspan='2'>[[4p9v]] is a 2 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4P9V OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4P9V FirstGlance]. <br>
@@ Line 20: / Line 20: @@
 </div>
 <div class="pdbe-citations 4p9v" style="background-color:#fffaf0;"></div>
+==See Also==
+*[[Growth factor receptor-bound proteins 3D structures|Growth factor receptor-bound proteins 3D structures]]
 == References ==
 <references/>
 __TOC__
 </StructureSection>
+[[Category: Large Structures]]
 [[Category: Clements, J H]]
 [[Category: Martin, S F]]

4p9v

From Proteopedia

Revision as of 17:48, 14 August 2019

Grb2 SH2 complexed with a pTyr-Ac6cN-Asn tripeptide

Structural highlights

Function

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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