View source for 8gi5


==Cryo-EM of self-assembling pyrene peptide with Ca2+==
<StructureSection load='8gi5' size='340' side='right'caption='[[8gi5]], [[Resolution|resolution]] 3.00&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[8gi5]] 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=8GI5 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=8GI5 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&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=OG9:2-pyren-1-ylethanoic+acid'>OG9</scene>, <scene name='pdbligand=SEP:PHOSPHOSERINE'>SEP</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=8gi5 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=8gi5 OCA], [https://pdbe.org/8gi5 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=8gi5 RCSB], [https://www.ebi.ac.uk/pdbsum/8gi5 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=8gi5 ProSAT]</span></td></tr>
</table>
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== Publication Abstract from PubMed ==
The understanding on how short peptide assemblies transit from disorder to order remains limited due to the lack of atomistic structures. Here we report cryo-EM structure of the nanofibers short intrinsically disordered peptides (IDPs). Upon lowering pH or adding calcium ions, the IDP transitions from individual nanoparticles to nanofibers containing an aromatic core and a disordered periphery comprised of 2 to 5 amino acids. Protonating the phosphate or adding more metal ions further assembles the nanofibers into filament bundles. The assemblies of the IDP analogs with controlled chemistry, such as phosphorylation site, hydrophobic interactions, and sequences indicate that metal ions interact with the flexible periphery of the nanoparticles of the IDPs to form fibrils and enhance the interfibrillar interactions to form filament bundles. Illustrating that an IDP self-assembles from disorder to order, this work offers atomistic molecular insights to understand assemblies of short peptides driven by noncovalent interactions.

Hierarchical Assembly of Intrinsically Disordered Short Peptides.,Guo J, Rich-New ST, Liu C, Huang Y, Tan W, He H, Yi M, Zhang X, Egelman EH, Wang F, Xu B Chem. 2023 Sep 14;9(9):2530-2546. doi: 10.1016/j.chempr.2023.04.023. Epub 2023 , May 16. PMID:38094164<ref>PMID:38094164</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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<div class="pdbe-citations 8gi5" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Synthetic construct]]
[[Category: Guo J]]
[[Category: Rich-New ST]]
[[Category: Wang F]]
[[Category: Xu B]]