View source for 8ub3


==DpHF7 filament==
<StructureSection load='8ub3' size='340' side='right'caption='[[8ub3]], [[Resolution|resolution]] 3.30&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[8ub3]] is a 20 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=8UB3 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=8UB3 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]] 3.3&#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=8ub3 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=8ub3 OCA], [https://pdbe.org/8ub3 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=8ub3 RCSB], [https://www.ebi.ac.uk/pdbsum/8ub3 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=8ub3 ProSAT]</span></td></tr>
</table>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Biological evolution has led to precise and dynamic nanostructures that reconfigure in response to pH and other environmental conditions. However, designing micrometre-scale protein nanostructures that are environmentally responsive remains a challenge. Here we describe the de novo design of pH-responsive protein filaments built from subunits containing six or nine buried histidine residues that assemble into micrometre-scale, well-ordered fibres at neutral pH. The cryogenic electron microscopy structure of an optimized design is nearly identical to the computational design model for both the subunit internal geometry and the subunit packing into the fibre. Electron, fluorescent and atomic force microscopy characterization reveal a sharp and reversible transition from assembled to disassembled fibres over 0.3 pH units, and rapid fibre disassembly in less than 1 s following a drop in pH. The midpoint of the transition can be tuned by modulating buried histidine-containing hydrogen bond networks. Computational protein design thus provides a route to creating unbound nanomaterials that rapidly respond to small pH changes.

De novo design of pH-responsive self-assembling helical protein filaments.,Shen H, Lynch EM, Akkineni S, Watson JL, Decarreau J, Bethel NP, Benna I, Sheffler W, Farrell D, DiMaio F, Derivery E, De Yoreo JJ, Kollman J, Baker D Nat Nanotechnol. 2024 Jul;19(7):1016-1021. doi: 10.1038/s41565-024-01641-1. Epub , 2024 Apr 3. PMID:38570702<ref>PMID:38570702</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 8ub3" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Synthetic construct]]
[[Category: Baker D]]
[[Category: DiMaio F]]
[[Category: Farrell D]]
[[Category: Kollman JM]]
[[Category: Lynch EM]]
[[Category: Shen H]]