View source for 4to7


==N-Terminal domain of C. Reinhardtii SAS-6 homolog bld12p Q93E F145W K146R (NN24)==
<StructureSection load='4to7' size='340' side='right'caption='[[4to7]], [[Resolution|resolution]] 1.25&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[4to7]] is a 1 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=4TO7 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4TO7 FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.252&#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=4to7 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4to7 OCA], [https://pdbe.org/4to7 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4to7 RCSB], [https://www.ebi.ac.uk/pdbsum/4to7 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4to7 ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/A9CQL4_CHLRE A9CQL4_CHLRE] 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Centrioles are critical for the formation of centrosomes, cilia and flagella in eukaryotes. They are thought to assemble around a nine-fold symmetric cartwheel structure established by SAS-6 proteins. Here, we have engineered Chlamydomonas reinhardtii SAS-6-based oligomers with symmetries ranging from five- to ten-fold. Expression of a SAS-6 mutant that forms six-fold symmetric cartwheel structures in vitro resulted in cartwheels and centrioles with eight- or nine-fold symmetries in vivo. In combination with Bld10 mutants that weaken cartwheel-microtubule interactions, this SAS-6 mutant produced six- to eight-fold symmetric cartwheels. Concurrently, the microtubule wall maintained eight- and nine-fold symmetries. Expressing SAS-6 with analogous mutations in human cells resulted in nine-fold symmetric centrioles that exhibited impaired length and organization. Together, our data suggest that the self-assembly properties of SAS-6 instruct cartwheel symmetry, and lead us to propose a model in which the cartwheel and the microtubule wall assemble in an interdependent manner to establish the native architecture of centrioles.

SAS-6 engineering reveals interdependence between cartwheel and microtubules in determining centriole architecture.,Hilbert M, Noga A, Frey D, Hamel V, Guichard P, Kraatz SH, Pfreundschuh M, Hosner S, Fluckiger I, Jaussi R, Wieser MM, Thieltges KM, Deupi X, Muller DJ, Kammerer RA, Gonczy P, Hirono M, Steinmetz MO Nat Cell Biol. 2016 Apr;18(4):393-403. doi: 10.1038/ncb3329. Epub 2016 Mar 21. PMID:26999736<ref>PMID:26999736</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 4to7" style="background-color:#fffaf0;"></div>
== References ==
<references/>
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</StructureSection>
[[Category: Chlamydomonas reinhardtii]]
[[Category: Large Structures]]
[[Category: Hilbert M]]
[[Category: Kraatz SHW]]