Organization of the ribosomal RNA genes of dictyostelium discoideum: Mapping of the nontrascribed spacer regions

@article{Cockburn1976OrganizationOT,
  title={Organization of the ribosomal RNA genes of dictyostelium discoideum: Mapping of the nontrascribed spacer regions},
  author={A. Cockburn and M. J. Newkirk and R. Firtel},
  journal={Cell},
  year={1976},
  volume={9},
  pages={605-613}
}
Most of the Dictyostelium ribosomal nontranscribed spacer DNA has been mapped using Eco R1, Hind III, and Sal I restriction digests and recombinant plasmids containing parts of the rDNA (ribosomal DNA). The repeat units are at least 42 kb (1 kilobase = 1000 base pairs = 1 kb) long; of this, 8 kb codes for the 36S rRNA precursor. The repeat units give a homogeneous pattern of Sal I, Eco R1, and Hind III restriction fragments. The repeats could be linked by a heterogeneous region in the… Expand
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