7f1a: Difference between revisions
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==Odinarchaeota tubulin (OdinTubulin) H393D mutant, in a protofilament arrangement, bound 78% GTP/22% GDP 1 K+, 1 Mg2+== | ==Odinarchaeota tubulin (OdinTubulin) H393D mutant, in a protofilament arrangement, bound 78% GTP/22% GDP 1 K+, 1 Mg2+== | ||
<StructureSection load='7f1a' size='340' side='right'caption='[[7f1a]]' scene=''> | <StructureSection load='7f1a' size='340' side='right'caption='[[7f1a]], [[Resolution|resolution]] 1.90Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7F1A OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7F1A FirstGlance]. <br> | <table><tr><td colspan='2'>[[7f1a]] is a 1 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7F1A OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7F1A FirstGlance]. <br> | ||
</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=7f1a FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7f1a OCA], [https://pdbe.org/7f1a PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7f1a RCSB], [https://www.ebi.ac.uk/pdbsum/7f1a PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7f1a ProSAT]</span></td></tr> | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=GDP:GUANOSINE-5-DIPHOSPHATE'>GDP</scene>, <scene name='pdbligand=GTP:GUANOSINE-5-TRIPHOSPHATE'>GTP</scene>, <scene name='pdbligand=K:POTASSIUM+ION'>K</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></td></tr> | ||
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[7evb|7evb]], [[7evc|7evc]], [[7evd|7evd]], [[7eve|7eve]]</div></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=7f1a FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7f1a OCA], [https://pdbe.org/7f1a PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7f1a RCSB], [https://www.ebi.ac.uk/pdbsum/7f1a PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7f1a ProSAT]</span></td></tr> | |||
</table> | </table> | ||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
Tubulins are critical for the internal organization of eukaryotic cells, and understanding their emergence is an important question in eukaryogenesis. Asgard archaea are the closest known prokaryotic relatives to eukaryotes. Here, we elucidated the apo and nucleotide-bound x-ray structures of an Asgard tubulin from hydrothermal living Odinarchaeota (OdinTubulin). The guanosine 5'-triphosphate (GTP)-bound structure resembles a microtubule protofilament, with GTP bound between subunits, coordinating the "+" end subunit through a network of water molecules and unexpectedly by two cations. A water molecule is located suitable for GTP hydrolysis. Time course crystallography and electron microscopy revealed conformational changes on GTP hydrolysis. OdinTubulin forms tubules at high temperatures, with short curved protofilaments coiling around the tubule circumference, more similar to FtsZ, rather than running parallel to its length, as in microtubules. Thus, OdinTubulin represents an evolutionary stage intermediate between prokaryotic FtsZ and eukaryotic microtubule-forming tubulins. | |||
Structure and dynamics of Odinarchaeota tubulin and the implications for eukaryotic microtubule evolution.,Akil C, Ali S, Tran LT, Gaillard J, Li W, Hayashida K, Hirose M, Kato T, Oshima A, Fujishima K, Blanchoin L, Narita A, Robinson RC Sci Adv. 2022 Mar 25;8(12):eabm2225. doi: 10.1126/sciadv.abm2225. Epub 2022 Mar, 25. PMID:35333570<ref>PMID:35333570</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 7f1a" style="background-color:#fffaf0;"></div> | |||
== References == | |||
<references/> | |||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
[[Category: Large Structures]] | [[Category: Large Structures]] | ||
[[Category: Akil C]] | [[Category: Akil, C]] | ||
[[Category: Robinson | [[Category: Robinson, R C]] | ||
[[Category: Tran | [[Category: Tran, L T]] | ||
[[Category: Asgard]] | |||
[[Category: Filament]] | |||
[[Category: Gtp]] | |||
[[Category: Structural protein]] | |||
[[Category: Tubulin]] | |||
Revision as of 08:17, 15 June 2022
Odinarchaeota tubulin (OdinTubulin) H393D mutant, in a protofilament arrangement, bound 78% GTP/22% GDP 1 K+, 1 Mg2+Odinarchaeota tubulin (OdinTubulin) H393D mutant, in a protofilament arrangement, bound 78% GTP/22% GDP 1 K+, 1 Mg2+
Structural highlights
Publication Abstract from PubMedTubulins are critical for the internal organization of eukaryotic cells, and understanding their emergence is an important question in eukaryogenesis. Asgard archaea are the closest known prokaryotic relatives to eukaryotes. Here, we elucidated the apo and nucleotide-bound x-ray structures of an Asgard tubulin from hydrothermal living Odinarchaeota (OdinTubulin). The guanosine 5'-triphosphate (GTP)-bound structure resembles a microtubule protofilament, with GTP bound between subunits, coordinating the "+" end subunit through a network of water molecules and unexpectedly by two cations. A water molecule is located suitable for GTP hydrolysis. Time course crystallography and electron microscopy revealed conformational changes on GTP hydrolysis. OdinTubulin forms tubules at high temperatures, with short curved protofilaments coiling around the tubule circumference, more similar to FtsZ, rather than running parallel to its length, as in microtubules. Thus, OdinTubulin represents an evolutionary stage intermediate between prokaryotic FtsZ and eukaryotic microtubule-forming tubulins. Structure and dynamics of Odinarchaeota tubulin and the implications for eukaryotic microtubule evolution.,Akil C, Ali S, Tran LT, Gaillard J, Li W, Hayashida K, Hirose M, Kato T, Oshima A, Fujishima K, Blanchoin L, Narita A, Robinson RC Sci Adv. 2022 Mar 25;8(12):eabm2225. doi: 10.1126/sciadv.abm2225. Epub 2022 Mar, 25. PMID:35333570[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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