Results 61 to 70 of about 1,960,648 (201)

Fluorescent in situ hybridization of the ribosomal RNA genes (5S and 35S) in the genus Lolium: Lolium canariense, the missing link with Festuca?

open access: yesAnales del Jardín Botánico de Madrid, 2013
Two groups of taxa can be distinguished within the genus Lolium L. based on the pollination system, chromosome size, chromosomal location of nrDNA (5S and 35S (18S-5.8S-26S)] and nrDNA phylogeny.
Luis A. Inda, Elzbieta Wolny
doaj   +1 more source

Roles of ribosomal proteins in hematologic disorders and cancers: a review

open access: yesEmergency and Critical Care Medicine, 2023
. Ribosomes are important organelles for synthesizing proteins in cells. They are composed of ribosomal RNA and more than 80 ribosomal proteins. It is well known that an essential function of ribosomal proteins is to participate in protein translation ...
Jie Wang, Feng Yan
doaj   +1 more source

The Amplified Ribosomal DNA of Dytiscid Beetles [PDF]

open access: yesProceedings of the National Academy of Sciences, 1974
During oogenesis in many animals there is a massive extrachromosomal synthesis of the genes for ribosomal RNA. In Dytiscid beetles, as in the toad Xenopus , the amplified ribosomal DNA occurs as circular molecules of different sizes.
J G, Gall, J D, Rochaix
openaire   +2 more sources

Quantitation of Human Ribosomal DNA: Hybridization of Human DNA with Ribosomal RNA for Quantitation and Fractionation [PDF]

open access: yesPediatric Research, 1973
Extract: Quantitation of human genes for ribosomal RNA (rRNA) was possible by molecular DNA/RNA hybridization on nitrocellulose discs. Labeled ribosomal RNA hybridizes with an average of 14 × 10-5 of the total human DNA. If we assume that the diploid cell contains 5.5 × 1012 daltons of DNA, the ribosomal RNA hybridizes with 7.7 × 108 daltons of ...
openaire   +2 more sources

An HflX-type GTPase from Sulfolobus solfataricus binds to the 50S ribosomal subunit in all nucleotide-bound states [PDF]

open access: yes, 2011
HflX GTPases are found in all three domains of life, Bacteria, Archaea, and Eukaryotes. HflX from Escherichia coli has been shown to bind to the 50S ribosomal subunit in a nucleotide-dependent manner and this interaction strongly stimulates its GTPase ...
Fabian Blombach   +27 more
core   +1 more source

Organization and expression analysis of 5S and 45S ribosomal DNA clusters in autotetraploid Carassius auratus

open access: yesBMC Ecology and Evolution, 2021
Background Autotetraploid Carassius auratus (4n = 200, RRRR) (abbreviated as 4nRR) is derived from whole genome duplication of Carassius auratus red var. (2n = 100, RR) (abbreviated as RCC).
Chun Zhao   +10 more
doaj   +1 more source

Replication of Ribosomal DNA in Xenopus laevis [PDF]

open access: yesEuropean Journal of Biochemistry, 1981
The study of the localization of the replication origins of rDNA in Xenopus laevis has been approached by two different methods. 1. The DNA of X. laevis larvae was fractionated by CsCl gradient centrifugation in bulk and ribosomal DNA and examined in the electron microscope.
I, Bozzoni   +3 more
openaire   +2 more sources

Cic1p/Nsa3p is required for synthesis and nuclear export of 60S ribosomal subunits [PDF]

open access: yes, 2003
Cic1p/Nsa3p was previously reported to be associated with the 26S proteasome and required for the degradation of specific substrates, but was also shown to be associated with early pre-60S particles and to be localized to the nucleolus.
Tollervey, D   +7 more
core   +1 more source

Mild cognitive impairment is associated with low copy number of ribosomal genes in the genomes of elderly people

open access: yesFrontiers in Genetics, 2022
Introduction: Mild cognitive impairments (MCI) accompanying aging are associated with oxidative stress. The ability of cells to respond to stress is determined by the protein synthesis level, which depends on the ribosomes number.
Natalia N. Veiko   +11 more
doaj   +1 more source

First Report of Hemicriconemoides kanayaensis (Nematoda: Criconematidae) on Tea Plantations in Iran

open access: yesJournal of Nematology
During a nematode survey in Iran, an abundant population of sheathoid, migratory, root-ectoparasitic nematodes was recovered from a tea, Camellia sinensis (L.), Kuntze plantation for the first time. Morphological and molecular characterization identified
Mirghasemi Negin   +5 more
doaj   +1 more source

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