Issue 37, 2008

Free energies for biological electron transfer from QM/MM calculation: method, application and critical assessment

Abstract

Computer simulations of biological electron transfer reactions are reviewed with a focus on the calculation of reaction free energy (driving force) and reorganization free energy. Then a mixed quantum mechanical/molecular mechanical (QM/MM) approach is described which is designed for computation of these quantities for pure electron transfer reactions with large donor–acceptor separation distances. The method is applied to intra-protein electron transfer in Ru(bpy)2(im)His33 cytochrome c and the results compared to experimental data. Several modeling aspects which are important for successful calculation of free energies with QM/MM are discussed in detail.

Graphical abstract: Free energies for biological electron transfer from QM/MM calculation: method, application and critical assessment

Supplementary files

Article information

Article type
Perspective
Submitted
01 May 2008
Accepted
01 Jul 2008
First published
11 Aug 2008

Phys. Chem. Chem. Phys., 2008,10, 5651-5667

Free energies for biological electron transfer from QM/MM calculation: method, application and critical assessment

J. Blumberger, Phys. Chem. Chem. Phys., 2008, 10, 5651 DOI: 10.1039/B807444E

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