6cmp

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'''Unreleased structure'''
 
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The entry 6cmp is ON HOLD until Paper Publication
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==Closed structure of inactive SHP2 mutant C459E==
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<StructureSection load='6cmp' size='340' side='right' caption='[[6cmp]], [[Resolution|resolution]] 1.80&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[6cmp]] is a 2 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6CMP OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6CMP FirstGlance]. <br>
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</td></tr><tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Protein-tyrosine-phosphatase Protein-tyrosine-phosphatase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.1.3.48 3.1.3.48] </span></td></tr>
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<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=6cmp FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6cmp OCA], [http://pdbe.org/6cmp PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6cmp RCSB], [http://www.ebi.ac.uk/pdbsum/6cmp PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6cmp ProSAT]</span></td></tr>
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</table>
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== Disease ==
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[[http://www.uniprot.org/uniprot/PTN11_HUMAN PTN11_HUMAN]] Defects in PTPN11 are the cause of LEOPARD syndrome type 1 (LEOPARD1) [MIM:[http://omim.org/entry/151100 151100]]. It is an autosomal dominant disorder allelic with Noonan syndrome. The acronym LEOPARD stands for lentigines, electrocardiographic conduction abnormalities, ocular hypertelorism, pulmonic stenosis, abnormalities of genitalia, retardation of growth, and deafness.<ref>PMID:12058348</ref> <ref>PMID:14961557</ref> <ref>PMID:15389709</ref> <ref>PMID:15520399</ref> <ref>PMID:15121796</ref> <ref>PMID:15690106</ref> <ref>PMID:16679933</ref> Defects in PTPN11 are the cause of Noonan syndrome type 1 (NS1) [MIM:[http://omim.org/entry/163950 163950]]. Noonan syndrome (NS) is a disorder characterized by dysmorphic facial features, short stature, hypertelorism, cardiac anomalies, deafness, motor delay, and a bleeding diathesis. Some patients with Noonan syndrome type 1 develop multiple giant cell lesions of the jaw or other bony or soft tissues, which are classified as pigmented villomoduolar synovitis (PVNS) when occurring in the jaw or joints. Note=Mutations in PTPN11 account for more than 50% of the cases. Rarely, NS is associated with juvenile myelomonocytic leukemia (JMML). NS1 inheritance is autosomal dominant.<ref>PMID:11704759</ref> <ref>PMID:11992261</ref> <ref>PMID:12325025</ref> <ref>PMID:12161469</ref> <ref>PMID:12529711</ref> <ref>PMID:12634870</ref> <ref>PMID:12739139</ref> <ref>PMID:12960218</ref> <ref>PMID:12717436</ref> <ref>PMID:15384080</ref> <ref>PMID:15948193</ref> <ref>PMID:19020799</ref> Defects in PTPN11 are a cause of juvenile myelomonocytic leukemia (JMML) [MIM:[http://omim.org/entry/607785 607785]]. JMML is a pediatric myelodysplastic syndrome that constitutes approximately 30% of childhood cases of myelodysplastic syndrome (MDS) and 2% of leukemia. It is characterized by leukocytosis with tissue infiltration and in vitro hypersensitivity of myeloid progenitors to granulocyte-macrophage colony stimulating factor.<ref>PMID:12717436</ref> Defects in PTPN11 are a cause of metachondromatosis (MC) [MIM:[http://omim.org/entry/156250 156250]]. It is a skeletal disorder with radiologic fetarures of both multiple exostoses and Ollier disease, characterized by the presence of multiple enchondromas and osteochondroma-like lesions.<ref>PMID:20577567</ref>
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== Function ==
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[[http://www.uniprot.org/uniprot/PTN11_HUMAN PTN11_HUMAN]] Acts downstream of various receptor and cytoplasmic protein tyrosine kinases to participate in the signal transduction from the cell surface to the nucleus. Dephosphorylates ROCK2 at Tyr-722 resulting in stimulatation of its RhoA binding activity.<ref>PMID:10655584</ref> <ref>PMID:18829466</ref> <ref>PMID:18559669</ref>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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Protein tyrosine phosphatase SHP2 functions as a key regulator of cell cycle control, and activating mutations cause several cancers. Here, we dissect the energy landscape of wild-type SHP2 and the oncogenic mutation E76K. NMR spectroscopy and X-ray crystallography reveal that wild-type SHP2 exchanges between closed, inactive and open, active conformations. E76K mutation shifts this equilibrium toward the open state. The previously unknown open conformation is characterized, including the active-site WPD loop in the inward and outward conformations. Binding of the allosteric inhibitor SHP099 to E76K mutant, despite much weaker, results in an identical structure as the wild-type complex. A conformational selection to the closed state reduces drug affinity which, combined with E76K's much higher activity, demands significantly greater SHP099 concentrations to restore wild-type activity levels. The differences in structural ensembles and drug-binding kinetics of cancer-associated SHP2 forms may stimulate innovative ideas for developing more potent inhibitors for activated SHP2 mutants.
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Authors:
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Mechanism of activating mutations and allosteric drug inhibition of the phosphatase SHP2.,Padua RAP, Sun Y, Marko I, Pitsawong W, Stiller JB, Otten R, Kern D Nat Commun. 2018 Oct 30;9(1):4507. doi: 10.1038/s41467-018-06814-w. PMID:30375376<ref>PMID:30375376</ref>
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Description:
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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[[Category: Unreleased Structures]]
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</div>
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<div class="pdbe-citations 6cmp" style="background-color:#fffaf0;"></div>
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== References ==
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<references/>
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__TOC__
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</StructureSection>
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[[Category: Protein-tyrosine-phosphatase]]
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[[Category: Kern, D]]
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[[Category: Marko, I]]
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[[Category: Padua, R A.P]]
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[[Category: Pitsawong, W]]
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[[Category: Sun, Y]]
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[[Category: Hydrolase]]
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[[Category: Inactive mutant]]
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[[Category: Inactive state]]
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[[Category: Protein tyrosine phosphatase]]
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[[Category: Src homology domain 2]]

Revision as of 08:13, 14 November 2018

Closed structure of inactive SHP2 mutant C459E

6cmp, resolution 1.80Å

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