1976
DOI: 10.1016/0092-8674(76)90043-x
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Organization of the ribosomal RNA genes of dictyostelium discoideum: Mapping of the nontrascribed spacer regions

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Cited by 76 publications
(15 citation statements)
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“…The Tetrahymena genome contains several single 5S genes in addition to those clustered in tandem repeats. Except for Dictyostelium (37,38) and yeast (39, 40) where the 5S genes are linked to the large ribosomal genes, and Neurospora where mainly dispersed single copies of the 5S genes are found (34), a tandem repeat type of organization is common for these genes in eukaryotes (reviewed in 18, 41; see also 42). The single genes could be nontranscribed pseudogenes.…”
Section: Organization Of the 5s Genes In Tetrahymenamentioning
confidence: 99%
“…The Tetrahymena genome contains several single 5S genes in addition to those clustered in tandem repeats. Except for Dictyostelium (37,38) and yeast (39, 40) where the 5S genes are linked to the large ribosomal genes, and Neurospora where mainly dispersed single copies of the 5S genes are found (34), a tandem repeat type of organization is common for these genes in eukaryotes (reviewed in 18, 41; see also 42). The single genes could be nontranscribed pseudogenes.…”
Section: Organization Of the 5s Genes In Tetrahymenamentioning
confidence: 99%
“…There is extrachromosomal amplification of genes for rRNA (rDNA) in the oocytes of amphibia (1,2) and some insects (3,4) and in the ciliate protozoa Tetrahymena (5,6) and Paramecium (7). rDNA is also extrachromosomal in Physarum (8) and Dictyostelium (9). In Tetrahymena macronuclei (10) and in Physarum, rDNA is in the form of palindromic dimers.…”
mentioning
confidence: 99%
“…That 5 s rRNA, but not 4 s tRNA, was repressed in reconstructed slugs appears peculiar, in view of the fact that the syntheses of both RNAs in eukaryotic cells are catalyzed by one and the same enzyme, RNA polymerase I11 (23), whose existence in Dictyostelium cells has been shown as well (24,25). The reason for this preferential regulation of small molecular weight RNAs is unknown at present, but it may be related to the fact that the structure of Dictyostelium rDNA is unique in that 5 s rRNA coding region links to the stretch of 17s + 26s rRNA coding region (26,27), as observed in yeast and prokaryotes (28,29).…”
Section: Discussionmentioning
confidence: 96%