'Cutting Up Molecules' Enables Ultrafast Complex Molecular Simulations

by Vani Pradeep on  December 6, 2014 at 6:19 PM General Health News
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Two Japanese professors enable rapid simulations of molecules through their research. Professor Stephan Irle and Yoshio Nishimoto at the Institute of Transformative Bio-Molecules (ITbM) of Nagoya University and Dr. Dmitri Fedorov of the National Institute of Advanced Industrial Science and Technology (AIST, Tsukuba) have developed a novel ultrafast quantum chemical method enabling rapid simulations of molecules containing more than a million atoms without detrimental loss in accuracy.
'Cutting Up Molecules' Enables Ultrafast Complex Molecular Simulations
'Cutting Up Molecules' Enables Ultrafast Complex Molecular Simulations

This method consists of a combination of the Fragment Molecular Orbital (FMO) approach and the Density-Functional Tight-Binding (DFTB) method, called FMO-DFTB and has successfully evaluated large molecules including polypeptides, a DNA segment, a small protein and a fullerite surface.

The study, published online on September 22, 2014 in the journal, Journal of Chemical Theory and Computation, demonstrates a new quantum mechanical computational method achieving rapid and efficient simulation of complex molecular systems consisting of thousands to a million atoms.

Simulations using FMO-DFTB could be performed on small-scale PC clusters including desktop computers, which would be useful for biologists, chemists and material scientists investigating the reactivity and structure of complex molecular systems.



Source: Eurekalert

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