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| | <StructureSection load='2bfx' size='340' side='right'caption='[[2bfx]], [[Resolution|resolution]] 1.80Å' scene=''> | | <StructureSection load='2bfx' size='340' side='right'caption='[[2bfx]], [[Resolution|resolution]] 1.80Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[2bfx]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/African_clawed_frog African clawed frog]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2BFX OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=2BFX FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[2bfx]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Xenopus_laevis Xenopus laevis]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2BFX OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2BFX FirstGlance]. <br> |
| - | </td></tr><tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=TPO:PHOSPHOTHREONINE'>TPO</scene></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]] 1.8Å</td></tr> |
| - | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2bfy|2bfy]]</td></tr> | + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=TPO:PHOSPHOTHREONINE'>TPO</scene></td></tr> |
| - | <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>
| + | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2bfx FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2bfx OCA], [https://pdbe.org/2bfx PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2bfx RCSB], [https://www.ebi.ac.uk/pdbsum/2bfx PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2bfx ProSAT]</span></td></tr> |
| - | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://proteopedia.org/fgij/fg.htm?mol=2bfx FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2bfx OCA], [http://pdbe.org/2bfx PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2bfx RCSB], [http://www.ebi.ac.uk/pdbsum/2bfx PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2bfx ProSAT]</span></td></tr> | + | |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/AUKBA_XENLA AUKBA_XENLA]] Serine/threonine-protein kinase component of the chromosomal passenger complex (CPC), a complex that acts as a key regulator of mitosis. The CPC complex has essential functions at the centromere in ensuring correct chromosome alignment and segregation and is required for chromatin-induced microtubule stabilization and spindle assembly. Involved in the bipolar attachment of spindle microtubules to kinetochores and is a key regulator for the onset of cytokinesis during mitosis. Required for central/midzone spindle assembly and cleavage furrow formation. Phosphorylates 'Ser-10' of histone H3 during mitosis.<ref>PMID:12221116</ref> <ref>PMID:11350965</ref> <ref>PMID:17199039</ref> [[http://www.uniprot.org/uniprot/INCEA_XENLA INCEA_XENLA]] Component of the chromosomal passenger complex (CPC), a complex that acts as a key regulator of mitosis. The CPC complex has essential functions at the centromere in ensuring correct chromosome alignment and segregation and is required for chromatin-induced microtubule stabilization and spindle assembly. Probably acts through association with aurkb or aurkc. Seems to bind directly to microtubules.<ref>PMID:12221116</ref> <ref>PMID:17199039</ref> | + | [https://www.uniprot.org/uniprot/AUKBA_XENLA AUKBA_XENLA] Serine/threonine-protein kinase component of the chromosomal passenger complex (CPC), a complex that acts as a key regulator of mitosis. The CPC complex has essential functions at the centromere in ensuring correct chromosome alignment and segregation and is required for chromatin-induced microtubule stabilization and spindle assembly. Involved in the bipolar attachment of spindle microtubules to kinetochores and is a key regulator for the onset of cytokinesis during mitosis. Required for central/midzone spindle assembly and cleavage furrow formation. Phosphorylates 'Ser-10' of histone H3 during mitosis.<ref>PMID:12221116</ref> <ref>PMID:11350965</ref> <ref>PMID:17199039</ref> |
| | == Evolutionary Conservation == | | == Evolutionary Conservation == |
| | [[Image:Consurf_key_small.gif|200px|right]] | | [[Image:Consurf_key_small.gif|200px|right]] |
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| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: African clawed frog]] | |
| | [[Category: Large Structures]] | | [[Category: Large Structures]] |
| - | [[Category: Non-specific serine/threonine protein kinase]] | + | [[Category: Xenopus laevis]] |
| - | [[Category: Areces, L B]] | + | [[Category: Areces LB]] |
| - | [[Category: Ciferri, C]] | + | [[Category: Ciferri C]] |
| - | [[Category: Mapelli, M]] | + | [[Category: Mapelli M]] |
| - | [[Category: Musacchio, A]] | + | [[Category: Musacchio A]] |
| - | [[Category: Schneider, T R]] | + | [[Category: Schneider TR]] |
| - | [[Category: Sessa, F]] | + | [[Category: Sessa F]] |
| - | [[Category: Stukenberg, P T]] | + | [[Category: Stukenberg PT]] |
| - | [[Category: Tarricone, C]] | + | [[Category: Tarricone C]] |
| - | [[Category: Inhibition]]
| + | |
| - | [[Category: Kinase]]
| + | |
| - | [[Category: Mitosis]]
| + | |
| - | [[Category: Transferase]]
| + | |
| - | [[Category: Transferase complex]]
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| Structural highlights
Function
AUKBA_XENLA Serine/threonine-protein kinase component of the chromosomal passenger complex (CPC), a complex that acts as a key regulator of mitosis. The CPC complex has essential functions at the centromere in ensuring correct chromosome alignment and segregation and is required for chromatin-induced microtubule stabilization and spindle assembly. Involved in the bipolar attachment of spindle microtubules to kinetochores and is a key regulator for the onset of cytokinesis during mitosis. Required for central/midzone spindle assembly and cleavage furrow formation. Phosphorylates 'Ser-10' of histone H3 during mitosis.[1] [2] [3]
Evolutionary Conservation
Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.
Publication Abstract from PubMed
Aurora family serine/threonine kinases control mitotic progression, and their deregulation is implicated in tumorigenesis. Aurora A and Aurora B, the best-characterized members of mammalian Aurora kinases, are approximately 60% identical but bind to unrelated activating subunits. The structure of the complex of Aurora A with the TPX2 activator has been reported previously. Here, we report the crystal structure of Aurora B in complex with the IN-box segment of the inner centromere protein (INCENP) activator and with the small molecule inhibitor Hesperadin. The Aurora B:INCENP complex is remarkably different from the Aurora A:TPX2 complex. INCENP forms a crown around the small lobe of Aurora B and induces the active conformation of the T loop allosterically. The structure represents an intermediate state of activation of Aurora B in which the Aurora B C-terminal segment stabilizes an open conformation of the catalytic cleft, and a critical ion pair in the kinase active site is impaired. Phosphorylation of two serines in the carboxyl terminus of INCENP generates the fully active kinase.
Mechanism of Aurora B activation by INCENP and inhibition by hesperadin.,Sessa F, Mapelli M, Ciferri C, Tarricone C, Areces LB, Schneider TR, Stukenberg PT, Musacchio A Mol Cell. 2005 Apr 29;18(3):379-91. PMID:15866179[4]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Bolton MA, Lan W, Powers SE, McCleland ML, Kuang J, Stukenberg PT. Aurora B kinase exists in a complex with survivin and INCENP and its kinase activity is stimulated by survivin binding and phosphorylation. Mol Biol Cell. 2002 Sep;13(9):3064-77. PMID:12221116 doi:10.1091/mbc.E02-02-0092
- ↑ Murnion ME, Adams RR, Callister DM, Allis CD, Earnshaw WC, Swedlow JR. Chromatin-associated protein phosphatase 1 regulates aurora-B and histone H3 phosphorylation. J Biol Chem. 2001 Jul 13;276(28):26656-65. Epub 2001 May 11. PMID:11350965 doi:10.1074/jbc.M102288200
- ↑ Kelly AE, Sampath SC, Maniar TA, Woo EM, Chait BT, Funabiki H. Chromosomal enrichment and activation of the aurora B pathway are coupled to spatially regulate spindle assembly. Dev Cell. 2007 Jan;12(1):31-43. PMID:17199039 doi:10.1016/j.devcel.2006.11.001
- ↑ Sessa F, Mapelli M, Ciferri C, Tarricone C, Areces LB, Schneider TR, Stukenberg PT, Musacchio A. Mechanism of Aurora B activation by INCENP and inhibition by hesperadin. Mol Cell. 2005 Apr 29;18(3):379-91. PMID:15866179 doi:10.1016/j.molcel.2005.03.031
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