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QM/MM Methods for Biomolecular Systems

Senn, Hans Martin, Thiel, Walter·2009·Angewandte Chemie International Edition

Abstract

Two are better than one: Quantum mechanics/molecular mechanics (QM/MM) methods are the state‐of‐the‐art computational technique for treating reactive and other “electronic” processes in biomolecular systems. This Review presents the general methodological aspects of the QM/MM approach, its use within optimization and simulation techniques, and its areas of application, always with a biomolecular focus.magnified image Combined quantum‐mechanics/molecular‐mechanics (QM/MM) approaches have become the method of choice for modeling reactions in biomolecular systems. Quantum‐mechanical (QM) methods are required for describing chemical reactions and other electronic processes, such as charge transfer or electronic excitation. However, QM methods are restricted to systems of up to a few hundred atoms. However, the size and conformational complexity of biopolymers calls for methods capable of treating up to several 100 000 atoms and allowing for simulations over time scales of tens of nanoseconds. This is achieved by highly efficient, force‐field‐based molecular mechanics (MM) methods. Thus to model large biomolecules the logical approach is to combine the two techniques and to use a QM method for the chemically active region (e.g., substrates and co‐factors in an enzymatic reaction) and an MM treatment for the surroundings (e.g., protein and solvent). The resulting schemes are commonly referred to as combined or hybrid QM/MM methods. They enable the modeling of reactive biomolecular systems at a reasonable computational effort while providing the necessary accuracy.

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Metadata

Authors
Senn, H. M., & Thiel, W.
Venue
Angewandte Chemie International Edition
Publisher
Wiley
Published
2009-01-28
Volume
48
Issue
7
Pages
1198-1229
ISSN
  • 1433-7851 (ISSN-L)
  • 1521-3773
OpenAlex
W2110872379
Cited by
2,684
References
5
FWCI
71.93
Type
journal article
Language
en
Open access
closed

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