Results 1 to 10 of about 126,234 (299)
Cells, 2021 In human cells, each rDNA unit consists of the ~13 kb long ribosomal part and ~30 kb long intergenic spacer (IGS). The ribosomal part, transcribed by RNA polymerase I (pol I), includes genes coding for 18S, 5.8S, and 28S RNAs of the ribosomal particles ...
Dušan Cmarko +2 more
core +4 more sources
Complete deletion of yeast chromosomal rDNA repeats and integration of a new rDNA repeat: use of rDNA deletion strains for functional analysis of rDNA promoter elements in vivo [PDF]
Nucleic Acids Research, 2000 Strains of Saccharomyces cerevisiae were constructed in which chromosomal rDNA repeats are completely deleted and their growth is supported by a plasmid carrying a single rDNA repeat, either a plasmid carrying the 35S rRNA gene transcribed from the ...
Nomura, Masayasu +3 more
core +5 more sources
Research Progress on 35S rDNA and 5S rDNA in Sugarcane: Challenges and Prospects
International Journal of Molecular SciencesrDNA is abundant in various organisms, typically expressed as conserved tandem repeats. It plays a crucial role in ribosome synthesis, gene transcription, and expression, and it affects the occurrence of diseases in both animals and plants, aging ...
Nannan Zhang +7 more
core +3 more sources
RNA polymerase II-mediated rDNA transcription mediates rDNA copy number expansion in Drosophila.
PLoS GeneticsRibosomal DNA (rDNA), which encodes ribosomal RNA, is an essential but unstable genomic element due to its tandemly repeated nature. rDNA's repetitive nature causes spontaneous intrachromatid recombination, leading to copy number (CN) reduction, which ...
George J Watase, Yukiko M Yamashita
doaj +2 more sources
Variability of Human rDNA [PDF]
Cells, 2021 In human cells, ribosomal DNA (rDNA) is arranged in ten clusters of multiple tandem repeats. Each repeat is usually described as consisting of two parts: the 13 kb long ribosomal part, containing three genes coding for 18S, 5.8S and 28S RNAs of the ribosomal particles, and the 30 kb long intergenic spacer (IGS).
Evgeny Smirnov +4 more
openaire +3 more sources
CYTOGENETIC STUDY IN SAND SPIDERS (SICARIIDAE) FROM THE BRAZILIAN CAATINGA: SEX CHROMOSOME SYSTEM DIVERSITY IN CLOSELY RELATED SPECIES [PDF]
BAG. Journal of Basic and Applied Genetics, 2022 In this study, we investigated the chromosomes of three species of Sicarius spiders from the Brazilian Caatinga, using classical and molecular cytogenetic techniques.
Gimenez-Pinheiro T. +4 more
doaj +1 more source
First Report of Root-knot Nematode, Meloidogyne graminicola on Brassica juncea in China
Journal of Nematology, 2022 In southern China, the staple food rice (Oryza sativa) field is commonly rotated with brown mustard Brassica juncea. Root-knot nematodes (RKNs) are a major threat to rice production. From 2019 to 2021, B.
Lu X. H. +4 more
doaj +1 more source
Revista Mexicana de Ciencias Pecuarias, 2020 Aethina tumida (Coleoptera: Nitidulidae), commonly known as the Small Hive Beetle (SHB), is becoming a significant pest in the beekeeping industry outside of its natural distribution range.
Azucena Canto +3 more
doaj +1 more source
Calorie restriction reduces rDNA recombination independently of rDNA silencing [PDF]
Aging Cell, 2009 SummaryCalorie restriction (CR) extends lifespan in yeast, worms, flies and mammals, suggesting that it acts via a conserved mechanism. In yeast, activation of the NAD‐dependent histone deacetylase, Sir2, by CR is thought to increase silencing at the ribosomal DNA, thereby reducing the recombination‐induced generation of extrachromosomal rDNA circles ...
Riesen, Michèle, Morgan, Alan
openaire +2 more sources
Helminthologia, 2023 A species of predatory nematode, Mylonchulus sigmaturus Cobb, 1917, was recovered around the soil and roots of banana plants (Musa paradisiaca) from four different localities of Pakistan.
Ishaque U. +4 more
doaj +1 more source