title: Rotational diffusion of Escherichia coli ribosomes. II. - Ribosome attachment to polyurydilic acid.
abstract: Ribosome attachment to poly(U) has been studied by following the rotational diffusion of polyribosomes in solution. On the average, 13-17 and 50 nucleotides are found to be associated with 30S and 70S ribosome respectively. For an equal length of poly(U), the number of particles in a 30S polysome is four times that in a 70S polysome. The results are consistent with a structure of the polysome in which individual ribosomes are in close contact.
mesh_terms: D004058:Diffusion; D004926:Escherichia coli / Q000648:ultrastructure*; D007834:Lasers; D010782:Photolysis; D011072:Poly U / Q000032:analysis*; D012270:Ribosomes / Q000648:ultrastructure*
chemical_list: D011072:Poly U