2hmh

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(New page: 200px<br /><applet load="2hmh" size="450" color="white" frame="true" align="right" spinBox="true" caption="2hmh, resolution 2.00&Aring;" /> '''Crystal structure of...)
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[[Image:2hmh.gif|left|200px]]<br /><applet load="2hmh" size="450" color="white" frame="true" align="right" spinBox="true"
 
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caption="2hmh, resolution 2.00&Aring;" />
 
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'''Crystal structure of SOCS3 in complex with gp130(pTyr757) phosphopeptide.'''<br />
 
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==Overview==
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==Crystal structure of SOCS3 in complex with gp130(pTyr757) phosphopeptide.==
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Suppressor of cytokine signaling (SOCS) proteins are indispensable, negative regulators of cytokine-stimulated Janus kinase (JAK)-signal, transducer and activator of transcription (STAT) signaling pathways. SOCS, proteins (SOCS1-7 and CIS) consist of a variable N-terminal region, a, central Src homology-2 (SH2) domain, and a C-terminal SOCS box. The, N-terminal region in SOCS1 and SOCS3 includes the so-called kinase, inhibitory region that has been shown to inhibit the catalytic activity of, JAK2. Here, we present a crystal structure at 2.0 A resolution of the, N-terminally extended SH2 domain of SOCS3 in complex with its, phosphopeptide target on the cytokine receptor gp130. The structure, reveals that major insertions in the EF and BG loops of the SOCS3 SH2, domain are responsible for binding to gp130 with high affinity and, specificity. In addition, the structure provides insights into the, possible mechanisms by which SOCS3 and SOCS1 inhibit JAK2 kinase activity.
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<StructureSection load='2hmh' size='340' side='right'caption='[[2hmh]], [[Resolution|resolution]] 2.00&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[2hmh]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Mus_musculus Mus musculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2HMH OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2HMH FirstGlance]. <br>
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2&#8491;</td></tr>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CAS:S-(DIMETHYLARSENIC)CYSTEINE'>CAS</scene>, <scene name='pdbligand=PTR:O-PHOSPHOTYROSINE'>PTR</scene></td></tr>
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2hmh FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2hmh OCA], [https://pdbe.org/2hmh PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2hmh RCSB], [https://www.ebi.ac.uk/pdbsum/2hmh PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2hmh ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/SOCS3_MOUSE SOCS3_MOUSE] SOCS family proteins form part of a classical negative feedback system that regulates cytokine signal transduction. SOCS3 is involved in negative regulation of cytokines that signal through the JAK/STAT pathway. Inhibits cytokine signal transduction by binding to tyrosine kinase receptors including gp130, LIF, erythropoietin, insulin, IL12, GCSF and leptin receptors. Binding to JAK2 inhibits its kinase activity. Suppresses fetal liver erythropoiesis. Regulates onset and maintenance of allergic responses mediated by T-helper type 2 cells. Regulates IL-6 signaling in vivo. Probable substrate-recognition component of a SCF-like ECS (Elongin BC-CUL2/5-SOCS-box protein) E3 ubiquitin-protein ligase complex which mediates the ubiquitination and subsequent proteasomal degradation of target proteins (By similarity). Seems to recognize IL6ST.<ref>PMID:9889194</ref> <ref>PMID:10821852</ref> <ref>PMID:10490101</ref> <ref>PMID:12754505</ref> <ref>PMID:12847520</ref>
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== Evolutionary Conservation ==
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/hm/2hmh_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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</jmolCheckbox>
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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=2hmh ConSurf].
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<div style="clear:both"></div>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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Suppressor of cytokine signaling (SOCS) proteins are indispensable negative regulators of cytokine-stimulated Janus kinase (JAK)-signal transducer and activator of transcription (STAT) signaling pathways. SOCS proteins (SOCS1-7 and CIS) consist of a variable N-terminal region, a central Src homology-2 (SH2) domain, and a C-terminal SOCS box. The N-terminal region in SOCS1 and SOCS3 includes the so-called kinase inhibitory region that has been shown to inhibit the catalytic activity of JAK2. Here, we present a crystal structure at 2.0 A resolution of the N-terminally extended SH2 domain of SOCS3 in complex with its phosphopeptide target on the cytokine receptor gp130. The structure reveals that major insertions in the EF and BG loops of the SOCS3 SH2 domain are responsible for binding to gp130 with high affinity and specificity. In addition, the structure provides insights into the possible mechanisms by which SOCS3 and SOCS1 inhibit JAK2 kinase activity.
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==About this Structure==
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Structural basis for phosphotyrosine recognition by suppressor of cytokine signaling-3.,Bergamin E, Wu J, Hubbard SR Structure. 2006 Aug;14(8):1285-92. PMID:16905102<ref>PMID:16905102</ref>
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2HMH is a [http://en.wikipedia.org/wiki/Protein_complex Protein complex] structure of sequences from [http://en.wikipedia.org/wiki/Mus_musculus Mus musculus]. Full crystallographic information is available from [http://ispc.weizmann.ac.il/oca-bin/ocashort?id=2HMH OCA].
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==Reference==
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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Structural basis for phosphotyrosine recognition by suppressor of cytokine signaling-3., Bergamin E, Wu J, Hubbard SR, Structure. 2006 Aug;14(8):1285-92. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=16905102 16905102]
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</div>
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[[Category: Mus musculus]]
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<div class="pdbe-citations 2hmh" style="background-color:#fffaf0;"></div>
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[[Category: Protein complex]]
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[[Category: Bergamin, E.]]
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[[Category: Hubbard, S.R.]]
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[[Category: Wu, J.]]
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[[Category: gp130]]
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[[Category: peptide complex]]
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[[Category: ptyr]]
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[[Category: socs3]]
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''Page seeded by [http://ispc.weizmann.ac.il/oca OCA ] on Wed Nov 21 11:50:45 2007''
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==See Also==
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*[[Interleukin receptor 3D structures|Interleukin receptor 3D structures]]
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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: Large Structures]]
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[[Category: Mus musculus]]
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[[Category: Bergamin E]]
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[[Category: Hubbard SR]]
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[[Category: Wu J]]

Current revision

Crystal structure of SOCS3 in complex with gp130(pTyr757) phosphopeptide.

PDB ID 2hmh

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