Abstract
The results of a recent nanosecond (ns) Molecules dynamics (MD) simulation of the d(CGCGAATTCGCG) double helix in water and a 100 ps MD study of the λ repressor-operator complex are described. The DNA simulations are analyzed in terms of the structural dynamics, fluctuations in the groove width and bending of the helical axis. The results indicate that the ns dynamical trajectory progresses through a series of three substates of B form DNA, with lifetimes of the order of hundreds of picoseconds (ps). An incipient dynamical equilibrium is evident. A comparison of the calculated axis bending with that observed in corresponding crystal structure data is presented. Simulation of the DNA in complex with the protein and that of the free DNA in solution, starting from the crystal conformation, reveal the dynamical changes that occur on complex formation.
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Beveridge, D.L., McConnell, K.J., Young, M.A., Vijayakumar, S., Ravishanker, G. (1995). Molecular Dynamics Simulations of DNA and a Protein-DNA Complex Including Solvent. In: Pullman, A., Jortner, J., Pullman, B. (eds) Modelling of Biomolecular Structures and Mechanisms. The Jerusalem Symposia on Quantum Chemistry and Biochemistry, vol 27. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-0497-5_32
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DOI: https://doi.org/10.1007/978-94-011-0497-5_32
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