Analysis of DNA Elasticity

by: RP Linna, K Kaski

Physical Review Letters, Vol. 100, No. 16. (2008)

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Abstract

With a model that incorporates hydrodynamics directly, we show that flow experiments can be used for detecting some characteristics of the DNA elasticity which manifest themselves clearly at large length scales but cannot be observed by mechanical forcing experiments even at very small length scales. By systematic analysis, the conclusiveness of different experimental methods is evaluated. For the wormlike chain, confirmed as the correct model for DNA, we find an underlying scaling relation between its extension and flow velocity of the form Lp~v0.155, which emphasizes the significance of hydrodynamics.

@article{citeulike:2759228, abstract = {With a model that incorporates hydrodynamics directly, we show that flow experiments can be used for detecting some characteristics of the DNA elasticity which manifest themselves clearly at large length scales but cannot be observed by mechanical forcing experiments even at very small length scales. By systematic analysis, the conclusiveness of different experimental methods is evaluated. For the wormlike chain, confirmed as the correct model for DNA, we find an underlying scaling relation between its extension and flow velocity of the form Lp\~{}v0.155, which emphasizes the significance of hydrodynamics.}, author = {Linna, R. P. and Kaski, K. }, citeulike-article-id = {2759228}, doi = {http://dx.doi.org/10.1103/PhysRevLett.100.168104}, journal = {Physical Review Letters}, keywords = {2008, biology, elasticity, flow, protein}, number = {16}, posted-at = {2008-05-05 22:23:39}, priority = {2}, publisher = {APS}, title = {Analysis of DNA Elasticity}, url = {http://dx.doi.org/10.1103/PhysRevLett.100.168104}, volume = {100}, year = {2008} }

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TY - JOUR ID - citeulike:2759228 L3 - citeulike-article-id:2759228 TI - Analysis of DNA Elasticity JF - Physical Review Letters VL - 100 IS - 16 PB - APS N2 - With a model that incorporates hydrodynamics directly, we show that flow experiments can be used for detecting some characteristics of the DNA elasticity which manifest themselves clearly at large length scales but cannot be observed by mechanical forcing experiments even at very small length scales. By systematic analysis, the conclusiveness of different experimental methods is evaluated. For the wormlike chain, confirmed as the correct model for DNA, we find an underlying scaling relation between its extension and flow velocity of the form Lp~v0.155, which emphasizes the significance of hydrodynamics. KW - 2008 KW - biology KW - elasticity KW - flow KW - protein AU - Linna, RP AU - Kaski, K PY - 2008/// UR - http://dx.doi.org/10.1103/PhysRevLett.100.168104 ER -

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