We explore whether catalysis of a de novo designed enzyme-substrate complex is correlated to necessary solvent fluctuations to induce a chemical reaction. By studying the designed KEMP Eliminase as it goes through rounds of directed evolution to improve it's catalytic activity, we have found that catalytic activity correlates with an increase in density and structure of water near the active site. This suggests fluctuations in the solvation water near the active site couple to fluctuations in KEMP Eliminase to facilitate the catalytic process. To flesh this idea out, we are studying the progression of THz vibrational properties and cooperative fluctuations of solvation water.

Solvation dynamics and enzyme catalysis in a designed enzyme undergoing directed evolution

248th National Meeting (2014)

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