Results 21 to 30 of about 1,960,648 (201)

Evaluation of the complete nuclear rDNA unit sequence of the jellyfish Cyanea nozakii Kishinouye (Scyphozoa: Semaeostomeae) for molecular discrimination

open access: yesAnimal Cells and Systems, 2021
The harmful jellyfish Cyanea nozakii Kishinouye has frequently occurred on Korean coasts, and its blooms have caused serious ecological and economic damages. DNA sequences of the C. nozakii for molecular detection and discrimination are relatively scarce.
Buhari Lawan Muhammad   +2 more
doaj   +1 more source

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

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

Some species of fungi associated with declined Persian oak trees in Ilam province with emphasis on new records to mycobiota of Iran [PDF]

open access: yesرستنی‌ها, 2018
Zagros vegetation zone is one of the most important forest regions in Iran, which consists of a diverse group of arboreal species, especially oaks (Quercus spp.).
Amin Alidadi   +4 more
doaj   +1 more source

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

A nuclear ribosomal DNA phylogeny of Acer inferred with maximum likelihood, splits graphs, and motif analysis of 606 sequences [PDF]

open access: yes, 2006
The multi-copy internal transcribed spacer (ITS) region of nuclear ribosomal DNA is widely used to infer phylogenetic relationships among closely related taxa.
Guido W. Grimm   +7 more
core   +1 more source

Function of the upstream activating factor in chromatin structure organization and transcriptional regulation at the yeast ribosomal DNA [PDF]

open access: yes, 2010
Chromatin is the template of all processes involved in DNA metabolism in the eukaryotic cell. Accordingly, chromatin is a dynamic structure which changes in its composition and posttranslational modification correlating with the functional state of a ...
Götze, Hannah
core   +1 more source

The Protist Ribosomal Reference database (PR2): a catalog of unicellular eukaryote Small Sub-Unit rRNA sequences with curated taxonomy [PDF]

open access: yes, 2012
The interrogation of genetic markers in environmental meta-barcoding studies is currently seriously hindered by the lack of taxonomically curated reference data sets for the targeted genes.
Probert, Ian   +35 more
core   +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

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