Results 11 to 20 of about 317,056 (255)

Characterization of Yeast Ribosomal DNA [PDF]

open access: yesEuropean Journal of Biochemistry, 1975
High‐molecular‐weight yeast ribosomal DNA, purified by preparative Hg2/Cs2SO4 gradient centrifugation, was characterized using RNA‐DNA hybridization, CsCl gradient analysis and denaturation‐renaturation experiments. The following conclusions are drawn from the results of these studies.
J, Retèl, H, Van Keulen
openaire   +2 more sources

Ribosomal DNA heterochromatin in plants [PDF]

open access: yesCytogenetic and Genome Research, 2005
The aim of this review is to integrate earlier results and recent findings to present the current state-of-the-art vision concerning the dynamic behavior of the ribosomal DNA (rDNA) fraction in plants. The global organization and behavioral features of rDNA make it a most useful system to analyse the relationship between chromatin topology and gene ...
Neves, N.   +5 more
openaire   +3 more sources

Telomere and ribosomal DNA repeats are chromosomal targets of the bloom syndrome DNA helicase

open access: yesBMC Cell Biology, 2003
Background Bloom syndrome is one of the most cancer-predisposing disorders and is characterized by genomic instability and a high frequency of sister chromatid exchange. The disorder is caused by loss of function of a 3' to 5' RecQ DNA helicase, BLM. The
Paric Enesa   +2 more
doaj   +1 more source

Challenges and Approaches to Genotyping Repetitive DNA

open access: yesG3: Genes, Genomes, Genetics, 2020
Individuals within a species can exhibit vast variation in copy number of repetitive DNA elements. This variation may contribute to complex traits such as lifespan and disease, yet it is only infrequently considered in genotype-phenotype associations ...
Elizabeth A. Morton   +9 more
doaj   +1 more source

Ribosomal DNA-connecting ribosome biogenesis and chromosome biology [PDF]

open access: yesChromosome Research, 2019
Ribosomal DNA, the topic of this special issue, has long fascinated biologists. The RNA products of the ribosomal DNA are the ribosomal RNAs that are part of the ribosome. In this special issue, we focus on the sequence, molecular organization, repair, stability, copy number, and peculiar genetics of this region of the genome.
Lev, Porokhovnik, Jennifer L, Gerton
openaire   +2 more sources

Treacle controls the nucleolar response to rDNA breaks via TOPBP1 recruitment and ATR activation

open access: yesNature Communications, 2020
DNA double-strand breaks in ribosomal DNA repeats is associated with repression of ribosomal RNA synthesis. Here the authors reveal a cooperation between TOPBP1 and Treacle in the signaling cascade that triggers transcriptional inhibition and nucleolar ...
Clémence Mooser   +15 more
doaj   +1 more source

PCR amplification of a long rDNA segment with one primer pair in agriculturally important nematodes

open access: yesJournal of Nematology, 2019
Ribosomal DNA has been a reliable source of taxonomic and phylogenetic markers due to its high copy number in the genome and stable variation with few polymorphisms due to the homogenizing effect of concerted evolution.
Carta L. K., Li S.
doaj   +1 more source

SMN-deficient cells exhibit increased ribosomal DNA damage

open access: yesLife Science Alliance, 2022
SMN deficiency leads to elevated ribosomal DNA damage that results in impaired ribosomal RNA synthesis and translation and is accompanied by a motor neuron-specific down-regulation of DDX21 protein.
Evangelia Karyka   +13 more
doaj   +1 more source

Similarity between the association factor of ribosomal subunits and the protein Stm1p from Saccharomyces cerevisiae

open access: yesMemorias do Instituto Oswaldo Cruz, 2004
A ribosome association factor (AF) was isolated from the yeast Sacchharomyces cerevisiae. Partial amino acid sequence of AF was determined from its fragment of 25 kDa isolated by treating AF with 2-(2-nitrophenylsulfenyl)-3-methyl-3'-Bromoindolenine ...
Heriberto Correia   +5 more
doaj   +1 more source

Characterization of Pratylenchus crenatus and P. neglectus (Nematoda: Pratylenchidae) associated with wheat crop

open access: yesHelminthologia, 2015
The distribution of Pratylenchus species associated with wheat crops was investigated in Bohemian region of the Czech Republic. In total twelve localities were sampled.
Kumari S.
doaj   +1 more source

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