Results 231 to 240 of about 86,065 (262)

Ribosomal RNA and rDNA sequence analyses

Gene, 1992
The potential of ribosomal (r) RNA and the encoding genes (rDNA) to elucidate natural relationships has been dramatically extended by improved sequencing approaches and the application of polymerase chain reaction. Sequence information on 16S and 23S rRNA/DNA from 69 strains of 53 Streptomyces species allows determination of regions that can be used as
Stackebrandt, Erko, Liesack, Werner, Witt, Dagmar   +2 more
openaire   +5 more sources

Quantitative studies of rDNA in amphibians

Journal of Cell Science, 1977
ABSTRACT The proportion, of the genome that is complementary to 18 and 28 s has been determined for 12 species of amphibians. The group of species chosen for the experiment includes 5 related species belonging to the same genus (Plethodon) as well as species belonging to distant taxonomic groups whose C-values range from 3 to 62 pg.
openaire   +2 more sources

rDNA Amplification: Application of 16S rDNA-Based Methods for Bacterial Identification

2000
Continuing improvements in PCR and automated sequencing technologies, resulting in rapid acquisition of sequence data, have allowed these methods to be applied to the task of bacterial identification. The sequence of the 16S rDNA/RNA of bacterial strains has been demonstrated to be useful for phylogenetic analysis of different taxa.
Frederick A. Rainey, Erko Stackebrandt
openaire   +1 more source

A new role of the rDNA and nucleolus in the nucleus—rDNA instability maintains genome integrity

BioEssays, 2008
AbstractThe nucleolus is a region of the nucleus with high protein density and it acts as a ribosome factory. The nucleolus contains a distinct region of the genome, the ribosomal RNA gene repeats (rDNA) that supply ribosomal RNA (rRNA) molecules.
openaire   +2 more sources

RDNA SYN001

RDNA-SYN-001: Nature Biotechnology March 17 2026 reports generative AI models that are manufacturing-constraint-aware, enabling petascale DNA synthesis — 10^15 to 10^17 designed sequences — at trillion-fold reduced cost, producing realistic antibodies, T-cell receptors, and polymerases that are synthesizable on existing platforms without sequential ...
openaire   +2 more sources

The Structure of rDNA Chromatin

2011
The nucleolus is the site of transcription of large tandem repeated arrays of the rDNA which carry the genes for three of the four ribosomal RNAs in eukaryotes. We describe the general genomic features of the rDNA and review what is currently known about its physical organization within the nucleolus.
Peter J. Shaw, Peter C. McKeown
openaire   +1 more source

rDNA and Nucleologenesis in Drosophila

2013
The study of Drosophila ribosomal DNA (rDNA) dates back to the first bobbed mutations discovered by T.H. Morgan’s group nearly 100 years ago. From these earliest discoveries to the current day, Drosophila has proven to be a valuable system to study the genetic, molecular, and cellular aspects of rDNA in ribosome biogenesis.
Patrick DiMario, Allison James, Himanshu Raje   +2 more
openaire   +1 more source

[Physical mapping of the 45S rDNA and 5S rDNA to rice prometaphase chromosome].

Yi chuan xue bao = Acta genetica Sinica, 2002
Rice (Oryza sativa L.) is one of the most important cereal crops in the world. The chromosomes of rice are relatively small in size. With the help of fluorescence in situ hybridization (FISH), several rice DNAs have been localized on rice chromosomes. 45S rDNA and 5S rDNA are encoding sequences for ribosomal RNA synthesis. For detecting the chromosomes
Zhi-Yun, Gong, Hsin-Kan, Wu, Zhu-Kuan, Cheng, Ming-Hong, Gu   +3 more
openaire   +1 more source

The rDNA of drosophila melanogaster

Cell, 1981
openaire   +2 more sources

Autophagy deficiency activates rDNA transcription

Autophagy, 2022
Wei Wan, Zhengfu He, Zhuo Ren
exaly