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Anisotropic atomic motions in high-resolution protein crystallography molecular dynamics simulations

Conrad J Burden1,2 and Aaron J Oakley3

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Molecular dynamics (MD) simulations using empirical force fields are popular for the study of proteins. In this work, we compare anisotropic atomic fluctuations in nanosecond-timescale MD simulations with those observed in an ultra-high-resolution crystal structure of crambin. In order to make our comparisons, we have developed a compact graphical technique for assessing agreement between spatial atomic distributions determined by MD simulations and observed anisotropic temperature factors.


PACS

87.15.H- Dynamics of biomolecules

87.14.E- Proteins

87.15.B- Structure of biomolecules

87.15.Ya Fluctuations

Subjects

Biological physics

Dates

Issue 2 (June 2007)

Received 5 February 2007, accepted for publication 21 May 2007

Published 11 June 2007

 
Structure of the crambin molecule determined from high-resolution x-ray diffraction data.


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