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| | ==A TOG:alpha/beta-tubulin Complex Structure Reveals Conformation-Based Mechanisms For a Microtubule Polymerase== | | ==A TOG:alpha/beta-tubulin Complex Structure Reveals Conformation-Based Mechanisms For a Microtubule Polymerase== |
| - | <StructureSection load='4ffb' size='340' side='right' caption='[[4ffb]], [[Resolution|resolution]] 2.88Å' scene=''> | + | <StructureSection load='4ffb' size='340' side='right'caption='[[4ffb]], [[Resolution|resolution]] 2.88Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[4ffb]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/Saccharomyces_cerevisiae_s288c Saccharomyces cerevisiae s288c]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4FFB OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4FFB FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[4ffb]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Saccharomyces_cerevisiae_S288C Saccharomyces cerevisiae S288C]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4FFB OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4FFB FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=GTP:GUANOSINE-5-TRIPHOSPHATE'>GTP</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</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]] 2.882Å</td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">TUB1, YML085C ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=559292 Saccharomyces cerevisiae S288c]), TUB2, YFL037W ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=559292 Saccharomyces cerevisiae S288c]), L2108, STU2, YLR045C ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=559292 Saccharomyces cerevisiae S288c])</td></tr> | + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=GTP:GUANOSINE-5-TRIPHOSPHATE'>GTP</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></td></tr> |
| - | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Tubulin_GTPase Tubulin GTPase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.6.5.6 3.6.5.6] </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=4ffb FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4ffb OCA], [https://pdbe.org/4ffb PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4ffb RCSB], [https://www.ebi.ac.uk/pdbsum/4ffb PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4ffb 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=4ffb FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4ffb OCA], [http://www.rcsb.org/pdb/explore.do?structureId=4ffb RCSB], [http://www.ebi.ac.uk/pdbsum/4ffb PDBsum]</span></td></tr> | + | |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/TBA1_YEAST TBA1_YEAST]] Tubulin is the major constituent of microtubules. It binds two moles of GTP, one at an exchangeable site on the beta chain and one at a non-exchangeable site on the alpha chain. [[http://www.uniprot.org/uniprot/STU2_YEAST STU2_YEAST]] May play a role in the attachment, organization, and/or dynamics of microtubule ends at the spindle pole body. [[http://www.uniprot.org/uniprot/TBB_YEAST TBB_YEAST]] Tubulin is the major constituent of microtubules. It binds two moles of GTP, one at an exchangeable site on the beta chain and one at a non-exchangeable site on the alpha chain. | + | [https://www.uniprot.org/uniprot/TBA1_YEAST TBA1_YEAST] Tubulin is the major constituent of microtubules. It binds two moles of GTP, one at an exchangeable site on the beta chain and one at a non-exchangeable site on the alpha chain. |
| - | <div style="background-color:#fffaf0;">
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| - | == Publication Abstract from PubMed ==
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| - | Stu2p/XMAP215/Dis1 family proteins are evolutionarily conserved regulatory factors that use alphabeta-tubulin-interacting tumor overexpressed gene (TOG) domains to catalyze fast microtubule growth. Catalysis requires that these polymerases discriminate between unpolymerized and polymerized forms of alphabeta-tubulin, but the mechanism by which they do so has remained unclear. Here, we report the structure of the TOG1 domain from Stu2p bound to yeast alphabeta-tubulin. TOG1 binds alphabeta-tubulin in a way that excludes equivalent binding of a second TOG domain. Furthermore, TOG1 preferentially binds a curved conformation of alphabeta-tubulin that cannot be incorporated into microtubules, contacting alpha- and beta-tubulin surfaces that do not participate in microtubule assembly. Conformation-selective interactions with alphabeta-tubulin explain how TOG-containing polymerases discriminate between unpolymerized and polymerized forms of alphabeta-tubulin and how they selectively recognize the growing end of the microtubule.
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| - | A TOG:alphabeta-tubulin complex structure reveals conformation-based mechanisms for a microtubule polymerase.,Ayaz P, Ye X, Huddleston P, Brautigam CA, Rice LM Science. 2012 Aug 17;337(6096):857-60. PMID:22904013<ref>PMID:22904013</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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| | ==See Also== | | ==See Also== |
| - | *[[Tubulin|Tubulin]] | + | *[[Tubulin 3D Structures|Tubulin 3D Structures]] |
| - | == References ==
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| - | <references/>
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| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Saccharomyces cerevisiae s288c]] | + | [[Category: Large Structures]] |
| - | [[Category: Tubulin GTPase]] | + | [[Category: Saccharomyces cerevisiae S288C]] |
| - | [[Category: Ayaz, P]] | + | [[Category: Ayaz P]] |
| - | [[Category: Brautigam, C A]] | + | [[Category: Brautigam CA]] |
| - | [[Category: Huddleston, P]] | + | [[Category: Huddleston P]] |
| - | [[Category: Rice, L M]] | + | [[Category: Rice LM]] |
| - | [[Category: Ye, X]] | + | [[Category: Ye X]] |
| - | [[Category: Cytoskeleton]]
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| - | [[Category: Heat repeat]]
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| - | [[Category: Hydrolase]]
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| - | [[Category: Microtubule]]
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| - | [[Category: Tog domain]]
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| - | [[Category: Tubulin]]
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| - | [[Category: Tubulin fold]]
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