6ct3

Directed evolutionary changes in Kemp Eliminase KE07 - Crystal 27 round 7-2

spinqualitylabelsall models 6ct3, resolution 1.90Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 6ct3 is a 1 chain structure with sequence from Synthetic construct. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 1.9Å Ligands: 6VP, GOL, SO4 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT 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 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Kemp eliminase

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