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[[Image:2eva.gif|left|200px]]<br /><applet load="2eva" size="350" color="white" frame="true" align="right" spinBox="true"
caption="2eva, resolution 2.0&Aring;" />
'''Structural Basis for the Interaction of TAK1 Kinase with its Activating Protein TAB1'''<br />


==Overview==
==Structural Basis for the Interaction of TAK1 Kinase with its Activating Protein TAB1==
Transforming growth factor-beta (TGF-beta)-activated kinase 1 (TAK1) is a member of the MAPKKK family of protein kinases, and is involved in intracellular signalling pathways stimulated by transforming growth factor beta, interleukin-1 and tumour necrosis factor-alpha. TAK1 is known to rely upon an additional protein, TAK1-binding protein 1 (TAB1), for complete activation. However, the molecular basis for this activation has yet to be elucidated. We have solved the crystal structure of a novel TAK1 chimeric protein and these data give insight into how TAK1 is activated by TAB1. Our results reveal a novel binding pocket on the TAK1 kinase domain whose shape complements that of a unique alpha-helix in the TAK1 binding domain of TAB1, providing the basis for an intimate hydrophobic association between the protein activator and its target.
<StructureSection load='2eva' size='340' side='right'caption='[[2eva]], [[Resolution|resolution]] 2.00&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[2eva]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2EVA OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2EVA FirstGlance]. <br>
</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>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ADN:ADENOSINE'>ADN</scene></td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2eva FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2eva OCA], [https://pdbe.org/2eva PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2eva RCSB], [https://www.ebi.ac.uk/pdbsum/2eva PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2eva ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/M3K7_HUMAN M3K7_HUMAN] Serine/threonine kinase which acts as an essential component of the MAP kinase signal transduction pathway. Plays an important role in the cascades of cellular responses evoked by changes in the environment. Mediates signal transduction of TRAF6, various cytokines including interleukin-1 (IL-1), transforming growth factor-beta (TGFB), TGFB-related factors like BMP2 and BMP4, toll-like receptors (TLR), tumor necrosis factor receptor CD40 and B-cell receptor (BCR). Ceramides are also able to activate MAP3K7/TAK1. Once activated, acts as an upstream activator of the MKK/JNK signal transduction cascade and the p38 MAPK signal transduction cascade through the phosphorylation and activation of several MAP kinase kinases like MAP2K1/MEK1, MAP2K3/MKK3, MAP2K6/MKK6 and MAP2K7/MKK7. These MAP2Ks in turn activate p38 MAPKs, c-jun N-terminal kinases (JNKs) and I-kappa-B kinase complex (IKK). Both p38 MAPK and JNK pathways control the transcription factors activator protein-1 (AP-1), while nuclear factor-kappa B is activated by IKK. MAP3K7 activates also IKBKB and MAPK8/JNK1 in response to TRAF6 signaling and mediates BMP2-induced apoptosis. In osmotic stress signaling, plays a major role in the activation of MAPK8/JNK1, but not that of NF-kappa-B. Promotes TRIM5 capsid-specific restriction activity.<ref>PMID:8663074</ref> <ref>PMID:9079627</ref> <ref>PMID:10094049</ref> <ref>PMID:11460167</ref> <ref>PMID:12589052</ref> <ref>PMID:16845370</ref> <ref>PMID:16893890</ref> <ref>PMID:21512573</ref>
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
Check<jmol>
  <jmolCheckbox>
    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ev/2eva_consurf.spt"</scriptWhenChecked>
    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
    <text>to colour the structure by Evolutionary Conservation</text>
  </jmolCheckbox>
</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=2eva ConSurf].
<div style="clear:both"></div>


==About this Structure==
==See Also==
2EVA is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] with <scene name='pdbligand=ADN:'>ADN</scene> as [http://en.wikipedia.org/wiki/ligand ligand]. Active as [http://en.wikipedia.org/wiki/Non-specific_serine/threonine_protein_kinase Non-specific serine/threonine protein kinase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.11.1 2.7.11.1] Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2EVA OCA].
*[[Mitogen-activated protein kinase kinase kinase|Mitogen-activated protein kinase kinase kinase]]
 
== References ==
==Reference==
<references/>
Structural basis for the interaction of TAK1 kinase with its activating protein TAB1., Brown K, Vial SC, Dedi N, Long JM, Dunster NJ, Cheetham GM, J Mol Biol. 2005 Dec 16;354(5):1013-20. Epub 2005 Nov 2. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=16289117 16289117]
__TOC__
</StructureSection>
[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
[[Category: Non-specific serine/threonine protein kinase]]
[[Category: Large Structures]]
[[Category: Single protein]]
[[Category: Brown K]]
[[Category: Brown, K.]]
[[Category: Cheetham GM]]
[[Category: Cheetham, G M.]]
[[Category: Dedi N]]
[[Category: Dedi, N.]]
[[Category: Dunster NJ]]
[[Category: Dunster, N J.]]
[[Category: Long JM]]
[[Category: Long, J M.]]
[[Category: Vial SC]]
[[Category: Vial, S C.]]
[[Category: ADN]]
[[Category: kinase]]
[[Category: tab1]]
[[Category: tak1]]
 
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