View source for 8ga9


==C4HR1_4r: Extendable repeat protein tetramer==
<StructureSection load='8ga9' size='340' side='right'caption='[[8ga9]], [[Resolution|resolution]] 3.71&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[8ga9]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Synthetic_construct Synthetic construct]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=8GA9 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=8GA9 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]] 3.71&#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=8ga9 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=8ga9 OCA], [https://pdbe.org/8ga9 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=8ga9 RCSB], [https://www.ebi.ac.uk/pdbsum/8ga9 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=8ga9 ProSAT]</span></td></tr>
</table>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Molecular systems with coincident cyclic and superhelical symmetry axes have considerable advantages for materials design as they can be readily lengthened or shortened by changing the length of the constituent monomers. Among proteins, alpha-helical coiled coils have such symmetric, extendable architectures, but are limited by the relatively fixed geometry and flexibility of the helical protomers. Here we describe a systematic approach to generating modular and rigid repeat protein oligomers with coincident C(2) to C(8) and superhelical symmetry axes that can be readily extended by repeat propagation. From these building blocks, we demonstrate that a wide range of unbounded fibres can be systematically designed by introducing hydrophilic surface patches that force staggering of the monomers; the geometry of such fibres can be precisely tuned by varying the number of repeat units in the monomer and the placement of the hydrophilic patches.

Precisely patterned nanofibres made from extendable protein multiplexes.,Bethel NP, Borst AJ, Parmeggiani F, Bick MJ, Brunette TJ, Nguyen H, Kang A, Bera AK, Carter L, Miranda MC, Kibler RD, Lamb M, Li X, Sankaran B, Baker D Nat Chem. 2023 Dec;15(12):1664-1671. doi: 10.1038/s41557-023-01314-x. Epub 2023 , Sep 4. PMID:37667012<ref>PMID:37667012</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 8ga9" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Synthetic construct]]
[[Category: Bethel NP]]
[[Category: Borst AJ]]