Cable dynamics applied to long-length scale mechanics of DNA

Details Cable dynamics applied to long-length scale mechanics of DNA Cable dynamics applied to long-length scale mechanics of DNA

2007-02-23

arxiv.org/abs/physics/0702197v1

Physics

Biological Physics

14 pages, 7 figures, An invited keynote speech, in CD-ROM Proceedings of Sixth International Symposium on Cable Dynamics, Char

Scientific paper

This paper introduces the use of cable dynamics models as a means to explore the mechanics of DNA on long-length scales. It is on these length scales that DNA forms twisted and curved three-dimensional shapes known as supercoils and loops. These long-length scale DNA structures have a pronounced influence on the functions of this molecule within the cell including the packing of DNA in the cell nucleus, transcription, replication and gene repair. We provide a short background to the mechanics of DNA and suggest the logical connection to the mechanics of a low tension cable. A computational model is then summarized and example results are presented for DNA supercoiling and looping.

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