View source for 6uw0


==Engineered variant of I-OnuI meganuclease with improved thermostability and fully altered specificity targeting cholera toxin A subunit==
<StructureSection load='6uw0' size='340' side='right'caption='[[6uw0]], [[Resolution|resolution]] 2.72&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[6uw0]] is a 6 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=6UW0 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6UW0 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]] 2.72&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=EDO:1,2-ETHANEDIOL'>EDO</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=6uw0 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6uw0 OCA], [https://pdbe.org/6uw0 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6uw0 RCSB], [https://www.ebi.ac.uk/pdbsum/6uw0 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6uw0 ProSAT]</span></td></tr>
</table>
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== Publication Abstract from PubMed ==
The redesign of a macromolecular binding interface and corresponding alteration of recognition specificity is a challenging endeavor that remains recalcitrant to computational approaches. This is particularly true for the redesign of DNA binding specificity, which is highly dependent upon bending, hydrogen bonds, electrostatic contacts, and the presence of solvent and counterions throughout the molecular interface. Thus, redesign of protein-DNA binding specificity generally requires iterative rounds of amino acid randomization coupled to selections. Here, we describe the importance of scaffold thermostability for protein engineering, coupled with a strategy that exploits the protein's specificity profile, to redesign the specificity of a pair of meganucleases toward three separate genomic targets. We determine and describe a series of changes in protein sequence, stability, structure, and activity that accumulate during the engineering process, culminating in fully retargeted endonucleases.

Optimization of Protein Thermostability and Exploitation of Recognition Behavior to Engineer Altered Protein-DNA Recognition.,Lambert AR, Hallinan JP, Werther R, Glow D, Stoddard BL Structure. 2020 Apr 27. pii: S0969-2126(20)30128-3. doi:, 10.1016/j.str.2020.04.009. PMID:32359399<ref>PMID:32359399</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 6uw0" style="background-color:#fffaf0;"></div>
== References ==
<references/>
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</StructureSection>
[[Category: Large Structures]]
[[Category: Synthetic construct]]
[[Category: Stoddard BL]]
[[Category: Werther R]]