Force steps during viral DNA packaging ?

Details Force steps during viral DNA packaging ? Force steps during viral DNA packaging ?

2003-09-22

arxiv.org/abs/q-bio/0309010v1

Biology

Quantitative Biology

Biomolecules

18 pages, 7 figures, To appear in the Journal of Mechanics and Physics of Solids

Scientific paper

10.1016/j.jmps.2003.09.016

Biophysicists and structural biologists increasingly acknowledge the role played by the mechanical properties of macromolecules as a critical element in many biological processes. This change has been brought about, in part, by the advent of single molecule biophysics techniques that have made it possible to exert piconewton forces on key macromolecules and observe their deformations at nanometer length scales, as well as to observe the mechanical action of macromolecules such as molecular motors. This has opened up immense possibilities for a new generation of mechanical investigations that will respond to such measurements in an attempt to develop a coherent theory for the mechanical behavior of macromolecules under conditions where thermal and chemical effects are on an equal footing with deterministic forces. This paper presents an application of the principles of mechanics to the problem of DNA packaging, one of the key events in the life cycle of bacterial viruses with special reference to the nature of the internal forces that are built up during the DNA packaging process.

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