Translational and Reorientational Dynamics of Entangled DNA
作者： Zongying Gong , Johan R. C. van der Maarel
DOI: 10.1021/MA501618A
关键词:
摘要: The end-group mean square displacement, molecular reorientation time, and radius of gyration entangled λ-phage DNA molecules were measured with fluorescence microscopy. A frequency- dependent, complex diffusivity is derived by Fourier transformation the displacement. From a comparison diffusion moduli predictions Doi−Edwards theory, tube renewal step length, end-to-end distance, Rouse relaxation entanglement time are obtained. from orientation correlation tensor. concentration dependencies renewal, reorientation, as well number entanglements per molecule agree relevant scaling laws for salted polyelectrolytes screened electrostatics. Furthermore, similarity in scale brings into view coupled translational reorientational motion regime.
acs.org
sci-hub.se 参考文章(26)
Johan R. C. van der Maarel, Introduction To Biopolymer Physics ,(2007)
Iwao Teraoka, Polymer solutions: An introduction to physical properties John Wiley. ,(2002)
Masao Doi, Sam F Edwards, The theory of polymer dynamics Oxford University Press. ,(1986)
T. G. Mason, K. Ganesan, J. H. van Zanten, D. Wirtz, S. C. Kuo, Particle Tracking Microrheology of Complex Fluids Physical Review Letters. ,vol. 79, pp. 3282- 3285 ,(1997) , 10.1103/PHYSREVLETT.79.3282
Douglas E. Smith, Thomas T. Perkins, Steven Chu, Self-diffusion of an entangled DNA molecule by reptation. Physical Review Letters. ,vol. 75, pp. 4146- 4149 ,(1995) , 10.1103/PHYSREVLETT.75.4146
M. E. Komlosh, P. T. Callaghan, Segmental motion of entangled random coil polymers studied by pulsed gradient spin echo nuclear magnetic resonance Journal of Chemical Physics. ,vol. 109, pp. 10053- 10067 ,(1998) , 10.1063/1.477674
Xiaoying Zhu, Binu Kundukad, Johan R. C. van der Maarel, Viscoelasticity of entangled λ-phage DNA solutions Journal of Chemical Physics. ,vol. 129, pp. 185103- 185103 ,(2008) , 10.1063/1.3009249
Thomas G. Mason, Estimating the viscoelastic moduli of complex fluids using the generalized Stokes–Einstein equation Rheologica Acta. ,vol. 39, pp. 371- 378 ,(2000) , 10.1007/S003970000094
Thierry Savin, Patrick S. Doyle, Static and Dynamic Errors in Particle Tracking Microrheology Biophysical Journal. ,vol. 88, pp. 623- 638 ,(2005) , 10.1529/BIOPHYSJ.104.042457
Ritu Verma, J. C. Crocker, T. C. Lubensky, A. G. Yodh, ENTROPIC COLLOIDAL INTERACTIONS IN CONCENTRATED DNA SOLUTIONS Physical Review Letters. ,vol. 81, pp. 4004- 4007 ,(1998) , 10.1103/PHYSREVLETT.81.4004