|
|
| Line 1: |
Line 1: |
| - | | + | #REDIRECT [[6wup]] This PDB entry is obsolete and replaced by 6wup |
| - | ==Crystal structure of an ancestral cyclohexadienyl dehydratase, AncCDT-5==
| + | |
| - | <StructureSection load='6oki' size='340' side='right'caption='[[6oki]], [[Resolution|resolution]] 1.37Å' scene=''>
| + | |
| - | == Structural highlights ==
| + | |
| - | <table><tr><td colspan='2'>[[6oki]] is a 1 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6OKI OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6OKI FirstGlance]. <br>
| + | |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=EPE:4-(2-HYDROXYETHYL)-1-PIPERAZINE+ETHANESULFONIC+ACID'>EPE</scene>, <scene name='pdbligand=NA:SODIUM+ION'>NA</scene></td></tr>
| + | |
| - | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6oki FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6oki OCA], [http://pdbe.org/6oki PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6oki RCSB], [http://www.ebi.ac.uk/pdbsum/6oki PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6oki ProSAT]</span></td></tr>
| + | |
| - | </table>
| + | |
| - | <div style="background-color:#fffaf0;">
| + | |
| - | == Publication Abstract from PubMed ==
| + | |
| - | The emergence of enzymes through the neofunctionalization of noncatalytic proteins is ultimately responsible for the extraordinary range of biological catalysts observed in nature. Although the evolution of some enzymes from binding proteins can be inferred by homology, we have a limited understanding of the nature of the biochemical and biophysical adaptations along these evolutionary trajectories and the sequence in which they occurred. Here we reconstructed and characterized evolutionary intermediate states linking an ancestral solute-binding protein to the extant enzyme cyclohexadienyl dehydratase. We show how the intrinsic reactivity of a desolvated general acid was harnessed by a series of mutations radiating from the active site, which optimized enzyme-substrate complementarity and transition-state stabilization and minimized sampling of noncatalytic conformations. Our work reveals the molecular evolutionary processes that underlie the emergence of enzymes de novo, which are notably mirrored by recent examples of computational enzyme design and directed evolution.
| + | |
| - | | + | |
| - | Evolution of cyclohexadienyl dehydratase from an ancestral solute-binding protein.,Clifton BE, Kaczmarski JA, Carr PD, Gerth ML, Tokuriki N, Jackson CJ Nat Chem Biol. 2018 Apr 23. pii: 10.1038/s41589-018-0043-2. doi:, 10.1038/s41589-018-0043-2. PMID:29686357<ref>PMID:29686357</ref>
| + | |
| - | | + | |
| - | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br>
| + | |
| - | </div>
| + | |
| - | <div class="pdbe-citations 6oki" style="background-color:#fffaf0;"></div>
| + | |
| - | == References ==
| + | |
| - | <references/>
| + | |
| - | __TOC__
| + | |
| - | </StructureSection>
| + | |
| - | [[Category: Large Structures]]
| + | |
| - | [[Category: Kaczmarski, J A]]
| + | |
| - | [[Category: Mahawaththa, M C]]
| + | |
| - | [[Category: Cyclohexadienyl dehydratase ancestral protein reconstruction]]
| + | |
| - | [[Category: Lyase]]
| + | |
