Synthesis of Amplified DNA That Codes for Ribosomal RNA
- 1 November 1971
- journal article
- Published by Proceedings of the National Academy of Sciences in Proceedings of the National Academy of Sciences
- Vol. 68 (11), 2769-2773
- https://doi.org/10.1073/pnas.68.11.2769
Abstract
During the amplification stage in ovaries, the complete repetitive unit of the DNA that codes for ribosomal RNA in Xenopus appears to be transcribed. This large RNA transcript is found in a complex with DNA. Substitution experiments with 5-bromodeoxyuridine do not show any evidence that a complete amplified cistron is used as a template for further amplification. A derivative of rifampicin, 2',5'-dimethyl-N(4')benzyl-N(4')[desmethyl] rifampicin, preferentially inhibits the DNA synthesis responsible for ribosomal gene amplification. These results are consistent with the hypothesis that RNA-dependent DNA synthesis is involved in gene amplification.Keywords
This publication has 18 references indexed in Scilit:
- Viral RNA-dependent DNA Polymerase: RNA-dependent DNA Polymerase in Virions of RNA Tumour VirusesNature, 1970
- Properties of the ribosomal RNA precursor in Xenopus laevis; Comparison to the precursor in mammals and in plantsJournal of Molecular Biology, 1969
- Patterns of macromolecule synthesis during development of Xenopus laevis: II. Identification of the 40 S precursor to ribosomal RNADevelopmental Biology, 1969
- The replication of purified DNA introduced into living egg cytoplasmBiochimica et Biophysica Acta (BBA) - Nucleic Acids and Protein Synthesis, 1969
- The genes for ribosomal RNA during oögenesis.1969
- Localization of amplified ribosomal DNA in the oocyte of Xenopus laevisBiochimica et Biophysica Acta (BBA) - Nucleic Acids and Protein Synthesis, 1968
- Properties and Composition of the Isolated Ribosomal DNA Satellite of Xenopus laevisNature, 1968
- Differential synthesis of the genes for ribosomal RNA during amphibian oögenesis.Proceedings of the National Academy of Sciences, 1968
- Specific Gene Amplification in OocytesScience, 1968
- A quantitative assay for DNA-RNA hybrids with DNA immobilized on a membraneJournal of Molecular Biology, 1965