Results 31 to 40 of about 315,433 (266)

Unveiling cryptic species diversity of flowering plants: successful biological species identification of Asian Mitella using nuclear ribosomal DNA sequences

open access: yesBMC Evolutionary Biology, 2009
Background Although DNA sequence analysis is becoming a powerful tool for identifying species, it is not easy to assess whether the observed genetic disparity corresponds to reproductive isolation.
Okuyama Yudai, Kato Makoto
doaj   +1 more source

A New Isolate of the Genus Malassezia Based on the Sequence Analysis of 26S and ITS1 in Ribosomal DNA [PDF]

open access: yesCell Journal, 2009
Malassezia species considered to be the etiological agents of pityriasis versicolor andMalassezia follicolitis in humans. Recently, on the basis of molecular data, four new specieswere added to the genus.
Hossein Mirhendi   +2 more
doaj  

Ribosomal DNA magnification in Saccharomyces cerevisiae [PDF]

open access: yesJournal of Bacteriology, 1978
Strains monosomic for chromosome I of Saccharomyces cerevisiae contain 25 to 35% fewer rRNA genes than do normal diploid strains. When these strains are repeatedly subcultured, colonies are isolated that have magnified their number of rRNA genes to the diploid amount while remaining monosomic for chromosome I.
D B, Kaback, H O, Halvorson
openaire   +2 more sources

ABH2 Couples Regulation of Ribosomal DNA Transcription with DNA Alkylation Repair

open access: yesCell Reports, 2013
Transcription has been linked to DNA damage. How the most highly transcribed mammalian ribosomal (rDNA) genes maintain genome integrity in the absence of transcription-coupled DNA damage repair is poorly understood.
Pishun Li   +7 more
doaj   +1 more source

RNA polymerase I mutant affects ribosomal RNA processing and ribosomal DNA stability

open access: yesRNA Biology
Transcription is a major contributor to genomic instability. The ribosomal RNA (rDNA) gene locus consists of a head-to-tail repeat of the most actively transcribed genes in the genome.
Christophe Normand   +7 more
doaj   +1 more source

The long-range interaction map of ribosomal DNA arrays. [PDF]

open access: yesPLoS Genetics, 2018
The repeated rDNA array gives rise to the nucleolus, an organelle that is central to cellular processes as varied as stress response, cell cycle regulation, RNA modification, cell metabolism, and genome stability.
Shoukai Yu, Bernardo Lemos
doaj   +1 more source

Regulation of ribosomal DNA transcription by insulin [PDF]

open access: yesAmerican Journal of Physiology-Cell Physiology, 1998
The experiments reported here used 3T6-Swiss albino mouse fibroblasts and H4-II-E-C3 rat hepatoma cells as model systems to examine the mechanism(s) through which insulin regulates rDNA transcription. Serum starvation of 3T6 cells for 72 h resulted in a marked reduction in rDNA transcription.
K M, Hannan   +2 more
openaire   +2 more sources

Cloning and sequencing of the complicated rDNA gene family of Bos taurus

open access: yesCzech Journal of Animal Science, 2006
The rDNA genes coding for ribosomal RNA (rRNA) in animals are repeat sequences with high GC content and complicated structure. Based on the sequences of human ribosomal DNA repeat unit and transcription unit and the long and accurate PCR method with LA ...
D. Tang   +5 more
doaj   +1 more source

Investigating the Existence of Ribosomal Protein L5 Gene in Syrian Strain of Leishmania tropica Genome: Sequencing It and Evaluating Its Immune Response as DNA Vaccine

open access: yesJournal of Parasitology Research, 2021
Cutaneous leishmaniasis in Syria is caused mainly by Leishmania tropica. It represents a serious health problem, which has aggravated further after the civil war in the country.
Mohammad Maarouf, Alyaa A. Abdlwahab
doaj   +1 more source

An upstream open reading frame regulates expression of the mitochondrial protein Slm35 and mitophagy flux

open access: yesFEBS Letters, EarlyView.
This study reveals how the mitochondrial protein Slm35 is regulated in Saccharomyces cerevisiae. The authors identify stress‐responsive DNA elements and two upstream open reading frames (uORFs) in the 5′ untranslated region of SLM35. One uORF restricts translation, and its mutation increases Slm35 protein levels and mitophagy.
Hernán Romo‐Casanueva   +5 more
wiley   +1 more source

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