3ml4

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{{STRUCTURE_3ml4| PDB=3ml4 | SCENE= }}
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==Crystal structure of a complex between Dok7 PH-PTB and the MuSK juxtamembrane region==
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===Crystal structure of a complex between Dok7 PH-PTB and the MuSK juxtamembrane region===
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<StructureSection load='3ml4' size='340' side='right' caption='[[3ml4]], [[Resolution|resolution]] 2.60&Aring;' scene=''>
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{{ABSTRACT_PUBMED_20603078}}
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== Structural highlights ==
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<table><tr><td colspan='2'>[[3ml4]] is a 8 chain structure with sequence from [http://en.wikipedia.org/wiki/Mus_musculus Mus musculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3ML4 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3ML4 FirstGlance]. <br>
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</td></tr><tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=MSE:SELENOMETHIONINE'>MSE</scene>, <scene name='pdbligand=PTR:O-PHOSPHOTYROSINE'>PTR</scene></td></tr>
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<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">Dok7 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=10090 Mus musculus])</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=3ml4 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3ml4 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3ml4 RCSB], [http://www.ebi.ac.uk/pdbsum/3ml4 PDBsum]</span></td></tr>
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</table>
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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/ml/3ml4_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.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/chain_selection.php?pdb_ID=2ata 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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Formation of the vertebrate neuromuscular junction requires, among others proteins, Agrin, a neuronally derived ligand, and the following muscle proteins: LRP4, the receptor for Agrin; MuSK, a receptor tyrosine kinase (RTK); and Dok7 (or Dok-7), a cytoplasmic adaptor protein. Dok7 comprises a pleckstrin-homology (PH) domain, a phosphotyrosine-binding (PTB) domain, and C-terminal sites of tyrosine phosphorylation. Unique among adaptor proteins recruited to RTKs, Dok7 is not only a substrate of MuSK, but also an activator of MuSK's kinase activity. Here, we present the crystal structure of the Dok7 PH-PTB domains in complex with a phosphopeptide representing the Dok7-binding site on MuSK. The structure and biochemical data reveal a dimeric arrangement of Dok7 PH-PTB that facilitates trans-autophosphorylation of the kinase activation loop. The structure provides the molecular basis for MuSK activation by Dok7 and for rationalizing several Dok7 loss-of-function mutations found in patients with congenital myasthenic syndromes.
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==Function==
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The cytoplasmic adaptor protein Dok7 activates the receptor tyrosine kinase MuSK via dimerization.,Bergamin E, Hallock PT, Burden SJ, Hubbard SR Mol Cell. 2010 Jul 9;39(1):100-9. PMID:20603078<ref>PMID:20603078</ref>
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[[http://www.uniprot.org/uniprot/DOK7_MOUSE DOK7_MOUSE]] Probable muscle-intrinsic activator of MUSK that plays an essential role in neuromuscular synaptogenesis. Acts in aneural activation of MUSK and subsequent acetylcholine receptor (AchR) clustering in myotubes. Induces autophosphorylation of MUSK.<ref>PMID:16794080</ref> <ref>PMID:20603078</ref>
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==About this Structure==
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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[[3ml4]] is a 8 chain structure with sequence from [http://en.wikipedia.org/wiki/Mus_musculus Mus musculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3ML4 OCA].
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</div>
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== References ==
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==Reference==
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<references/>
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<ref group="xtra">PMID:020603078</ref><references group="xtra"/><references/>
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__TOC__
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</StructureSection>
[[Category: Mus musculus]]
[[Category: Mus musculus]]
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[[Category: Bergamin, E.]]
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[[Category: Bergamin, E]]
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[[Category: Hubbard, S R.]]
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[[Category: Hubbard, S R]]
[[Category: Adapter protein]]
[[Category: Adapter protein]]
[[Category: Dimerization]]
[[Category: Dimerization]]
[[Category: Signaling protein]]
[[Category: Signaling protein]]
[[Category: Tyrosine phosphorylation]]
[[Category: Tyrosine phosphorylation]]

Revision as of 17:08, 18 December 2014

Crystal structure of a complex between Dok7 PH-PTB and the MuSK juxtamembrane region

3ml4, resolution 2.60Å

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