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4wzx

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==ULK3 regulates cytokinetic abscission by phosphorylating ESCRT-III proteins==
==ULK3 regulates cytokinetic abscission by phosphorylating ESCRT-III proteins==
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<StructureSection load='4wzx' size='340' side='right' caption='[[4wzx]], [[Resolution|resolution]] 1.39&Aring;' scene=''>
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<StructureSection load='4wzx' size='340' side='right'caption='[[4wzx]], [[Resolution|resolution]] 1.39&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
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<table><tr><td colspan='2'>[[4wzx]] is a 2 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4WZX OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4WZX FirstGlance]. <br>
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<table><tr><td colspan='2'>[[4wzx]] is a 2 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=4WZX OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4WZX FirstGlance]. <br>
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</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CO:COBALT+(II)+ION'>CO</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr>
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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]] 1.3859&#8491;</td></tr>
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<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[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] </span></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=CO:COBALT+(II)+ION'>CO</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></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=4wzx FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4wzx OCA], [http://www.rcsb.org/pdb/explore.do?structureId=4wzx RCSB], [http://www.ebi.ac.uk/pdbsum/4wzx PDBsum]</span></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=4wzx FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4wzx OCA], [https://pdbe.org/4wzx PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4wzx RCSB], [https://www.ebi.ac.uk/pdbsum/4wzx PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4wzx ProSAT]</span></td></tr>
</table>
</table>
== Function ==
== Function ==
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[[http://www.uniprot.org/uniprot/ULK3_HUMAN ULK3_HUMAN]] Serine/threonine protein kinase that acts as a regulator of Sonic hedgehog (SHH) signaling and autophagy. Acts as a negative regulator of SHH signaling in the absence of SHH ligand: interacts with SUFU, thereby inactivating the protein kinase activity and preventing phosphorylation of GLI proteins (GLI1, GLI2 and/or GLI3). Positively regulates SHH signaling in the presence of SHH: dissociates from SUFU, autophosphorylates and mediates phosphorylation of GLI2, activating it and promoting its nuclear translocation. Phosphorylates in vitro GLI2, as well as GLI1 and GLI3, although less efficiently. Also acts as a regulator of autophagy: following cellular senescence, able to induce autophagy.<ref>PMID:19279323</ref> <ref>PMID:19878745</ref> <ref>PMID:20643644</ref> [[http://www.uniprot.org/uniprot/IST1_HUMAN IST1_HUMAN]] Proposed to be involved in specific functions of the ESCRT machinery. Is required for efficient abscission during cytokinesis, but not for HIV-1 budding. The involvement in the MVB pathway is not established. Involved in recruiting VPS4A and/or VPS4B to the midbody of dividing cells.<ref>PMID:19129479</ref> <ref>PMID:19129480</ref>
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[https://www.uniprot.org/uniprot/ULK3_HUMAN ULK3_HUMAN] Serine/threonine protein kinase that acts as a regulator of Sonic hedgehog (SHH) signaling and autophagy. Acts as a negative regulator of SHH signaling in the absence of SHH ligand: interacts with SUFU, thereby inactivating the protein kinase activity and preventing phosphorylation of GLI proteins (GLI1, GLI2 and/or GLI3). Positively regulates SHH signaling in the presence of SHH: dissociates from SUFU, autophosphorylates and mediates phosphorylation of GLI2, activating it and promoting its nuclear translocation. Phosphorylates in vitro GLI2, as well as GLI1 and GLI3, although less efficiently. Also acts as a regulator of autophagy: following cellular senescence, able to induce autophagy.<ref>PMID:19279323</ref> <ref>PMID:19878745</ref> <ref>PMID:20643644</ref>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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The Endosomal Sorting Complexes Required for Transport (ESCRT) machinery mediates the physical separation between daughter cells during cytokinetic abscission. This process is regulated by the abscission checkpoint, a genome protection mechanism that relies on Aurora B and the ESCRT-III subunit CHMP4C to delay abscission in response to chromosome missegregation. Here we show that Unc-51-like kinase 3 (ULK3) phosphorylates and binds ESCRT-III subunits via tandem MIT domains and thereby delays abscission in response to lagging chromosomes, nuclear pore defects and tension forces at the midbody. Our structural and biochemical studies reveal an unusually tight interaction between ULK3 and IST1, an ESCRT-III subunit required for abscission. We also demonstrate that IST1 phosphorylation by ULK3 is an essential signal required to sustain the abscission checkpoint and that ULK3 and CHMP4C are functionally linked components of the timer that controls abscission in multiple physiological situations.
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ULK3 regulates cytokinetic abscission by phosphorylating ESCRT-III proteins.,Caballe A, Wenzel DM, Agromayor M, Alam SL, Skalicky JJ, Kloc M, Carlton JG, Labrador L, Sundquist WI, Martin-Serrano J Elife. 2015 May 26;4. doi: 10.7554/eLife.06547. PMID:26011858<ref>PMID:26011858</ref>
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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</div>
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==See Also==
==See Also==
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*[[Serine/threonine protein kinase|Serine/threonine protein kinase]]
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*[[Serine/threonine protein kinase 3D structures|Serine/threonine protein kinase 3D structures]]
== References ==
== References ==
<references/>
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
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[[Category: Non-specific serine/threonine protein kinase]]
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[[Category: Homo sapiens]]
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[[Category: Agromayor, M]]
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[[Category: Large Structures]]
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[[Category: Alam, S L]]
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[[Category: Agromayor M]]
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[[Category: Caballe, A]]
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[[Category: Alam SL]]
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[[Category: Carlton, J G]]
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[[Category: Caballe A]]
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[[Category: Kloc, M]]
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[[Category: Carlton JG]]
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[[Category: Labrador, L]]
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[[Category: Kloc M]]
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[[Category: Martin-Serrano, J]]
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[[Category: Labrador L]]
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[[Category: Skalicky, J J]]
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[[Category: Martin-Serrano J]]
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[[Category: Sundquist, W I]]
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[[Category: Skalicky JJ]]
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[[Category: Wenzel, D M]]
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[[Category: Sundquist WI]]
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[[Category: Cell cycle]]
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[[Category: Wenzel DM]]
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[[Category: Escrt]]
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[[Category: Ist1]]
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[[Category: Mim]]
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[[Category: Mit domain]]
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[[Category: Ulk3]]
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Current revision

ULK3 regulates cytokinetic abscission by phosphorylating ESCRT-III proteins

PDB ID 4wzx

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