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6dpw

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==Undecorated GTPgammaS microtubule==
==Undecorated GTPgammaS microtubule==
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<StructureSection load='6dpw' size='340' side='right'caption='[[6dpw]], [[Resolution|resolution]] 3.50&Aring;' scene=''>
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<SX load='6dpw' size='340' side='right' viewer='molstar' caption='[[6dpw]], [[Resolution|resolution]] 3.50&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
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<table><tr><td colspan='2'>[[6dpw]] is a 12 chain structure with sequence from [http://en.wikipedia.org/wiki/Sus_scrofa Sus scrofa]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6DPW OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6DPW FirstGlance]. <br>
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<table><tr><td colspan='2'>[[6dpw]] is a 12 chain structure with sequence from [https://en.wikipedia.org/wiki/Sus_scrofa Sus scrofa]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6DPW OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6DPW 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=GSP:5-GUANOSINE-DIPHOSPHATE-MONOTHIOPHOSPHATE'>GSP</scene>, <scene name='pdbligand=GTP:GUANOSINE-5-TRIPHOSPHATE'>GTP</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</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">Electron Microscopy, [[Resolution|Resolution]] 3.5&#8491;</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=6dpw FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6dpw OCA], [http://pdbe.org/6dpw PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6dpw RCSB], [http://www.ebi.ac.uk/pdbsum/6dpw PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6dpw ProSAT]</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=GSP:5-GUANOSINE-DIPHOSPHATE-MONOTHIOPHOSPHATE'>GSP</scene>, <scene name='pdbligand=GTP:GUANOSINE-5-TRIPHOSPHATE'>GTP</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></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=6dpw FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6dpw OCA], [https://pdbe.org/6dpw PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6dpw RCSB], [https://www.ebi.ac.uk/pdbsum/6dpw PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6dpw ProSAT]</span></td></tr>
</table>
</table>
== Function ==
== Function ==
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[[http://www.uniprot.org/uniprot/TBA1B_PIG TBA1B_PIG]] 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/TBB_PIG TBB_PIG]] 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.
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[https://www.uniprot.org/uniprot/TBA1B_PIG TBA1B_PIG] 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.
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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Microtubules (MTs) are polymers assembled from alphabeta-tubulin heterodimers that display the hallmark behavior of dynamic instability. MT dynamics are driven by GTP hydrolysis within the MT lattice, and are highly regulated by a number of MT-associated proteins (MAPs). How MAPs affect MTs is still not fully understood, partly due to a lack of high-resolution structural data on undecorated MTs, which need to serve as a baseline for further comparisons. Here we report three structures of MTs in different nucleotide states (GMPCPP, GDP, and GTPgammaS) at near-atomic resolution and in the absence of any binding proteins. These structures allowed us to differentiate the effects of nucleotide state versus MAP binding on MT structure. Kinesin binding has a small effect on the extended, GMPCPP-bound lattice, but hardly affects the compacted GDP-MT lattice, while binding of end-binding (EB) proteins can induce lattice compaction (together with lattice twist) in MTs that were initially in an extended and more stable state. We propose a MT lattice-centric model in which the MT lattice serves as a platform that integrates internal tubulin signals, such as nucleotide state, with outside signals, such as binding of MAPs or mechanical forces, resulting in global lattice rearrangements that in turn affect the affinity of other MT partners and result in the exquisite regulation of MT dynamics.
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Separating the effects of nucleotide and EB binding on microtubule structure.,Zhang R, LaFrance B, Nogales E Proc Natl Acad Sci U S A. 2018 Jun 18. pii: 1802637115. doi:, 10.1073/pnas.1802637115. PMID:29915050<ref>PMID:29915050</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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<div class="pdbe-citations 6dpw" style="background-color:#fffaf0;"></div>
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==See Also==
==See Also==
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*[[Tubulin|Tubulin]]
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*[[Tubulin 3D Structures|Tubulin 3D Structures]]
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== References ==
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<references/>
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__TOC__
__TOC__
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</StructureSection>
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</SX>
[[Category: Large Structures]]
[[Category: Large Structures]]
[[Category: Sus scrofa]]
[[Category: Sus scrofa]]
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[[Category: Nogales, E]]
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[[Category: Nogales E]]
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[[Category: Zhang, R]]
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[[Category: Zhang R]]
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[[Category: Cell cycle]]
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[[Category: Cytoskeleton]]
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[[Category: Gtpgamma]]
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[[Category: Microtubule]]
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[[Category: Seam]]
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Current revision

Undecorated GTPgammaS microtubule

6dpw, resolution 3.50Å

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