A Projector-Embedding Approach for Multiscale Coupled-Cluster Calculations Applied to Citrate Synthase

作者:Bennie Simon J; van der Kamp Marc W; Pennifold Robert C R; Stella Martina; Manby Frederick R; Mulholland Adrian J
来源:Journal of Chemical Theory and Computation, 2016, 12(6): 2689-2697.
DOI:10.1021/acs.jctc.6b00285

摘要

Projector-based embedding has recently emerged as a robust multiscale method for the calculation of various electronic molecular properties. We present the coupling of projector embedding with quantum mechanics/molecular mechanics modeling and apply it for the first time to an enzyme-catalyzed reaction. Using projector-based embedding, we combine coupled-cluster theory, density-functional theory (DFT), and molecular mechanics to compute energies for the proton abstraction from acetyl-coenzyme A by citrate synthase. By embedding correlated ab initio methods in DFT we eliminate functional sensitivity and obtain high-accuracy profiles in a procedure that is straightforward to apply.

  • 出版日期2016-6