View source for 6dc1


==Directed evolutionary changes in Kemp Eliminase KE07 - Crystal 25 round 7==
<StructureSection load='6dc1' size='340' side='right'caption='[[6dc1]], [[Resolution|resolution]] 2.68&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[6dc1]] is a 12 chain structure with sequence from [http://en.wikipedia.org/wiki/Synthetic_construct_sequences Synthetic construct sequences]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6DC1 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6DC1 FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=6VP:5-NITRO-2-OXIDANYL-BENZENECARBONITRILE'>6VP</scene>, <scene name='pdbligand=B3P:2-[3-(2-HYDROXY-1,1-DIHYDROXYMETHYL-ETHYLAMINO)-PROPYLAMINO]-2-HYDROXYMETHYL-PROPANE-1,3-DIOL'>B3P</scene>, <scene name='pdbligand=PEG:DI(HYDROXYETHYL)ETHER'>PEG</scene>, <scene name='pdbligand=TRS:2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL'>TRS</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=6dc1 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6dc1 OCA], [http://pdbe.org/6dc1 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6dc1 RCSB], [http://www.ebi.ac.uk/pdbsum/6dc1 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6dc1 ProSAT]</span></td></tr>
</table>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Developments in computational chemistry, bioinformatics, and laboratory evolution have facilitated the de novo design and catalytic optimization of enzymes. Besides creating useful catalysts, the generation and iterative improvement of designed enzymes can provide valuable insight into the interplay between the many phenomena that have been suggested to contribute to catalysis. In this work, we follow changes in conformational sampling, electrostatic preorganization, and quantum tunneling along the evolutionary trajectory of a designed Kemp eliminase. We observe that in the Kemp Eliminase KE07, instability of the designed active site leads to the emergence of two additional active site configurations. Evolutionary conformational selection then gradually stabilizes the most efficient configuration, leading to an improved enzyme. This work exemplifies the link between conformational plasticity and evolvability and demonstrates that residues remote from the active sites of enzymes play crucial roles in controlling and shaping the active site for efficient catalysis.

The evolution of multiple active site configurations in a designed enzyme.,Hong NS, Petrovic D, Lee R, Gryn'ova G, Purg M, Saunders J, Bauer P, Carr PD, Lin CY, Mabbitt PD, Zhang W, Altamore T, Easton C, Coote ML, Kamerlin SCL, Jackson CJ Nat Commun. 2018 Sep 25;9(1):3900. doi: 10.1038/s41467-018-06305-y. PMID:30254369<ref>PMID:30254369</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 6dc1" style="background-color:#fffaf0;"></div>

==See Also==
*[[Kemp eliminase|Kemp eliminase]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Synthetic construct sequences]]
[[Category: Carr, P D]]
[[Category: Hong, N S]]
[[Category: Jackson, C J]]
[[Category: De novo protein]]
[[Category: Directed evolution]]
[[Category: Ke07]]
[[Category: Kemp eliminase]]
[[Category: Lyase]]