title: New low resolution model for 50S subunit of Escherichia coli ribosomes.
abstract: Neutron low angle scattering studies of the 50S subunit of E. coli ribosomes with the contrast variation method reveals large fluctuations in the scattering density. A region of relatively low scattering density, rich in proteins, surrounds an RNA-rich core of higher scattering density. The centers of mass of the RNA and protein parts of the 50S subunit are separated by a distance (20 A) that is considerably smaller than that reported in previous studies.
mesh_terms: D004926:Escherichia coli / Q000648:ultrastructure; D008970:Molecular Weight; D009502:Neutrons; D012335:RNA, Ribosomal; D012269:Ribosomal Proteins; D012270:Ribosomes / Q000648:ultrastructure*; D012542:Scattering, Radiation
chemical_list: D012335:RNA, Ribosomal; D012269:Ribosomal Proteins