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| <StructureSection load='5cek' size='340' side='right'caption='[[5cek]], [[Resolution|resolution]] 2.80Å' scene=''> | | <StructureSection load='5cek' size='340' side='right'caption='[[5cek]], [[Resolution|resolution]] 2.80Å' scene=''> |
| == Structural highlights == | | == Structural highlights == |
| <table><tr><td colspan='2'>[[5cek]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5CEK OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5CEK FirstGlance]. <br> | | <table><tr><td colspan='2'>[[5cek]] 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=5CEK OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5CEK FirstGlance]. <br> |
| </td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[5cem|5cem]]</td></tr> | | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.8Å</td></tr> |
| <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">TRIB1, C8FW, GIG2, TRB1 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</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=5cek FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5cek OCA], [https://pdbe.org/5cek PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5cek RCSB], [https://www.ebi.ac.uk/pdbsum/5cek PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5cek ProSAT]</span></td></tr> |
| <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=5cek FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5cek OCA], [http://pdbe.org/5cek PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5cek RCSB], [http://www.ebi.ac.uk/pdbsum/5cek PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5cek ProSAT]</span></td></tr> | |
| </table> | | </table> |
| == Function == | | == Function == |
| [[http://www.uniprot.org/uniprot/TRIB1_HUMAN TRIB1_HUMAN]] Interacts with MAPK kinases and regulates activation of MAP kinases. May not display kinase activity.<ref>PMID:15299019</ref> <ref>PMID:15299019</ref> | | [https://www.uniprot.org/uniprot/TRIB1_HUMAN TRIB1_HUMAN] Interacts with MAPK kinases and regulates activation of MAP kinases. May not display kinase activity.<ref>PMID:15299019</ref> <ref>PMID:15299019</ref> |
| <div style="background-color:#fffaf0;">
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| == Publication Abstract from PubMed ==
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| CCAAT-enhancer binding proteins (C/EBPs) are transcription factors that play a central role in the differentiation of myeloid cells and adipocytes. Tribbles pseudokinases govern levels of C/EBPs by recruiting them to the COP1 ubiquitin ligase for ubiquitination. Here, we present the first crystal structure of a Tribbles protein, which reveals a catalytically inactive TRIB1 pseudokinase domain with a unique adaptation in the alphaC helix. A second crystal structure and biophysical studies of TRIB1 with its C-terminal extension, which includes the COP1-binding motif, show that the C-terminal extension is sequestered at a site formed by the modified TRIB1 alphaC helix. In addition, we have identified and characterized the TRIB1 substrate-recognition sequence within C/EBPalpha, which is evolutionarily conserved in C/EBP transcription factors. Binding studies indicate that C/EBPalpha recruitment is weaker in the presence of the C-terminal COP1-binding motif, but the magnitude of this effect suggests that the two bind distinct rather directly overlapping binding sites.
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| Molecular Mechanism of CCAAT-Enhancer Binding Protein Recruitment by the TRIB1 Pseudokinase.,Murphy JM, Nakatani Y, Jamieson SA, Dai W, Lucet IS, Mace PD Structure. 2015 Nov 3;23(11):2111-21. doi: 10.1016/j.str.2015.08.017. Epub 2015, Oct 9. PMID:26455797<ref>PMID:26455797</ref>
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| From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br>
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| </div>
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| <div class="pdbe-citations 5cek" style="background-color:#fffaf0;"></div>
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| == References == | | == References == |
| <references/> | | <references/> |
| __TOC__ | | __TOC__ |
| </StructureSection> | | </StructureSection> |
| [[Category: Human]] | | [[Category: Homo sapiens]] |
| [[Category: Large Structures]] | | [[Category: Large Structures]] |
| [[Category: Mace, P D]] | | [[Category: Mace PD]] |
| [[Category: Nakatani, Y]] | | [[Category: Nakatani Y]] |
| [[Category: Kinase]]
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| [[Category: Transferase]]
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