title: [Brownian motion of biological macromolecules studied by triplet-triplet dichroism: application to the 70S ribosome of E. coli].
abstract: The dichroism of the long-lived triplet-triplet absorption of covalent labels has been used for measuring the brownian rotational relaxation time of giant macromolecules in the microsecond time range. Using this method, a radius of 147 A has been found for E. coli 70 S ribosomes in solution.
mesh_terms: D055592:Biophysical Phenomena; D001703:Biophysics; D004926:Escherichia coli; D009038:Motion; D012270:Ribosomes / Q000648:ultrastructure; D013057:Spectrum Analysis
vernacular_title: Etude de la rotation brownienne de macromolécules biologiques au moyen de sondes de dichroïsme triplet-triplet: application aux ribosomes 70 S de E. coli