title: Conformational change of core particles studied by quasielastic light scattering.
abstract: The diffusion translational coefficient Dt of core particles in monodisperse solutions has been measured by the quasielastic light scattering method in a large scale of salinities over the range 6.10(-4) to 2M Na+ or K+. The observed values of DT are independent of particle concentration in the range 0.1-2 mg/ml and do not vary with the scattering vector q corresponding to scattering angles between 40 degrees -120 degrees. When the salinity is progressively raised an increase of DT from 1.9.10(-7) cm2s-1 to 3.2.10(-7) cm2s-1 was observed at about 2.10(-3) M NaCl followed by a decrease of DT beyond 0.6 M NaCl.
mesh_terms: D000818:Animals; D008027:Light; D008099:Liver / Q000648:ultrastructure; D009707:Nucleosomes / Q000648:ultrastructure*; D051381:Rats; D012542:Scattering, Radiation / Q000379:methods
chemical_list: D009707:Nucleosomes