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==The binding mode of epothilone A on a,b-tubulin by electron crystallography== | ==The binding mode of epothilone A on a,b-tubulin by electron crystallography== | ||
<StructureSection load='1tvk' size='340' side='right' caption='[[1tvk]], [[Resolution|resolution]] 2.89Å' scene=''> | <StructureSection load='1tvk' size='340' side='right'caption='[[1tvk]], [[Resolution|resolution]] 2.89Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[1tvk]] is a 2 chain structure with sequence from [ | <table><tr><td colspan='2'>[[1tvk]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Bos_taurus Bos taurus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1TVK OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1TVK FirstGlance]. <br> | ||
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=EP:EPOTHILONE+A'>EP</scene>, <scene name='pdbligand=GDP:GUANOSINE-5-DIPHOSPHATE'>GDP</scene>, <scene name='pdbligand=GTP:GUANOSINE-5-TRIPHOSPHATE'>GTP</scene> | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Electron crystallography, [[Resolution|Resolution]] 2.89Å</td></tr> | ||
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=EP:EPOTHILONE+A'>EP</scene>, <scene name='pdbligand=GDP:GUANOSINE-5-DIPHOSPHATE'>GDP</scene>, <scene name='pdbligand=GTP:GUANOSINE-5-TRIPHOSPHATE'>GTP</scene></td></tr> | |||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[ | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1tvk FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1tvk OCA], [https://pdbe.org/1tvk PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1tvk RCSB], [https://www.ebi.ac.uk/pdbsum/1tvk PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1tvk ProSAT]</span></td></tr> | ||
</table> | </table> | ||
== Function == | == Function == | ||
[ | [https://www.uniprot.org/uniprot/TBA1D_BOVIN TBA1D_BOVIN] 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 (By similarity). | ||
== Evolutionary Conservation == | == Evolutionary Conservation == | ||
[[Image:Consurf_key_small.gif|200px|right]] | [[Image:Consurf_key_small.gif|200px|right]] | ||
Check<jmol> | Check<jmol> | ||
<jmolCheckbox> | <jmolCheckbox> | ||
<scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/tv/1tvk_consurf.spt"</scriptWhenChecked> | <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/tv/1tvk_consurf.spt"</scriptWhenChecked> | ||
<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> | <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> | ||
<text>to colour the structure by Evolutionary Conservation</text> | <text>to colour the structure by Evolutionary Conservation</text> | ||
| Line 30: | Line 31: | ||
==See Also== | ==See Also== | ||
*[[Tubulin|Tubulin]] | *[[Tubulin 3D Structures|Tubulin 3D Structures]] | ||
== References == | == References == | ||
<references/> | <references/> | ||
| Line 36: | Line 37: | ||
</StructureSection> | </StructureSection> | ||
[[Category: Bos taurus]] | [[Category: Bos taurus]] | ||
[[Category: Cornett | [[Category: Large Structures]] | ||
[[Category: Downing | [[Category: Cornett B]] | ||
[[Category: Krahn | [[Category: Downing KH]] | ||
[[Category: Li | [[Category: Krahn JM]] | ||
[[Category: Nettles | [[Category: Li H]] | ||
[[Category: Snyder | [[Category: Nettles JH]] | ||
[[Category: Snyder JP]] | |||
Latest revision as of 09:34, 23 August 2023
The binding mode of epothilone A on a,b-tubulin by electron crystallographyThe binding mode of epothilone A on a,b-tubulin by electron crystallography
Structural highlights
FunctionTBA1D_BOVIN 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 (By similarity). 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 PubMedThe structure of epothilone A, bound to alpha,beta-tubulin in zinc-stabilized sheets, was determined by a combination of electron crystallography at 2.89 angstrom resolution and nuclear magnetic resonance-based conformational analysis. The complex explains both the broad-based epothilone structure-activity relationship and the known mutational resistance profile. Comparison with Taxol shows that the longstanding expectation of a common pharmacophore is not met, because each ligand exploits the tubulin-binding pocket in a unique and independent manner. The binding mode of epothilone A on alpha,beta-tubulin by electron crystallography.,Nettles JH, Li H, Cornett B, Krahn JM, Snyder JP, Downing KH Science. 2004 Aug 6;305(5685):866-9. PMID:15297674[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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