View source for 7jr9


==Chlamydomonas reinhardtii radial spoke minimal head complex==
<StructureSection load='7jr9' size='340' side='right'caption='[[7jr9]], [[Resolution|resolution]] 2.95&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[7jr9]] is a 7 chain structure with sequence from [https://en.wikipedia.org/wiki/Chlamydomonas_reinhardtii Chlamydomonas reinhardtii]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7JR9 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7JR9 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]] 2.95&#8491;</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=7jr9 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7jr9 OCA], [https://pdbe.org/7jr9 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7jr9 RCSB], [https://www.ebi.ac.uk/pdbsum/7jr9 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7jr9 ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/Q27YU5_CHLRE Q27YU5_CHLRE] 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Motile cilia power cell locomotion and drive extracellular fluid flow by propagating bending waves from their base to tip. The coordinated bending of cilia requires mechanoregulation by the radial spoke (RS) protein complexes and the microtubule central pair (CP). Despite their importance for ciliary motility across eukaryotes, the molecular function of the RSs is unknown. Here, we reconstituted the Chlamydomonas reinhardtii RS head that abuts the CP and determined its structure using single-particle cryo-EM to 3.1-A resolution, revealing a flat, negatively charged surface supported by a rigid core of tightly intertwined proteins. Mutations in this core, corresponding to those involved in human ciliopathies, compromised the stability of the recombinant complex, providing a molecular basis for disease. Partially reversing the negative charge on the RS surface impaired motility in C. reinhardtii. We propose that the RS-head architecture is well-suited for mechanoregulation of ciliary beating through physical collisions with the CP.

Structure of the radial spoke head and insights into its role in mechanoregulation of ciliary beating.,Grossman-Haham I, Coudray N, Yu Z, Wang F, Zhang N, Bhabha G, Vale RD Nat Struct Mol Biol. 2021 Jan;28(1):20-28. doi: 10.1038/s41594-020-00519-9. Epub , 2020 Dec 14. PMID:33318704<ref>PMID:33318704</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 7jr9" style="background-color:#fffaf0;"></div>
== References ==
<references/>
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</StructureSection>
[[Category: Chlamydomonas reinhardtii]]
[[Category: Large Structures]]
[[Category: Bhabha G]]
[[Category: Coudray N]]
[[Category: Grossman-Haham I]]
[[Category: Vale RD]]
[[Category: Wang F]]
[[Category: Yu Z]]