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==Cryo-EM structure of ciliary microtubule doublet== | |||
<SX load='5ubq' size='340' side='right' viewer='molstar' caption='[[5ubq]], [[Resolution|resolution]] 5.70Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[5ubq]] is a 6 chain structure with sequence from [https://en.wikipedia.org/wiki/Tetrahymena_thermophila Tetrahymena thermophila]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5UBQ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5UBQ FirstGlance]. <br> | |||
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Electron Microscopy, [[Resolution|Resolution]] 5.7Å</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=MG:MAGNESIUM+ION'>MG</scene></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=5ubq FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5ubq OCA], [https://pdbe.org/5ubq PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5ubq RCSB], [https://www.ebi.ac.uk/pdbsum/5ubq PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5ubq ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/TBA_TETTH TBA_TETTH] 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;"> | |||
== Publication Abstract from PubMed == | |||
Cilia are ubiquitous, hair-like appendages found in eukaryotic cells that carry out functions of cell motility and sensory reception. Cilia contain an intriguing cytoskeletal structure, termed the axoneme that consists of nine doublet microtubules radially interlinked and longitudinally organized in multiple specific repeat units. Little is known, however, about how the axoneme allows cilia to be both actively bendable and sturdy or how it is assembled. To answer these questions, we used cryo-electron microscopy to structurally analyse several of the repeating units of the doublet at sub-nanometre resolution. This structural detail enables us to unambiguously assign alpha- and beta-tubulins in the doublet microtubule lattice. Our study demonstrates the existence of an inner sheath composed of different kinds of microtubule inner proteins inside the doublet that likely stabilizes the structure and facilitates the specific building of the B-tubule. | |||
Subnanometre-resolution structure of the doublet microtubule reveals new classes of microtubule-associated proteins.,Ichikawa M, Liu D, Kastritis PL, Basu K, Hsu TC, Yang S, Bui KH Nat Commun. 2017 May 2;8:15035. doi: 10.1038/ncomms15035. PMID:28462916<ref>PMID:28462916</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
[[Category: | </div> | ||
<div class="pdbe-citations 5ubq" style="background-color:#fffaf0;"></div> | |||
==See Also== | |||
*[[Tubulin 3D Structures|Tubulin 3D Structures]] | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</SX> | |||
[[Category: Large Structures]] | |||
[[Category: Tetrahymena thermophila]] | |||
[[Category: Basu K]] | |||
[[Category: Bui KH]] | |||
[[Category: Ichikawa M]] | |||
[[Category: Kastritis PL]] | |||
[[Category: Liu D]] | |||
Latest revision as of 12:53, 25 December 2024
Cryo-EM structure of ciliary microtubule doubletCryo-EM structure of ciliary microtubule doublet
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