Results 61 to 70 of about 338,742 (309)

Next generation sequencing analysis reveals a relationship between rDNA unit diversity and locus number in Nicotiana diploids

, 2012
Background Tandemly arranged nuclear ribosomal DNA (rDNA), encoding 18S, 5.8S and 26S ribosomal RNA (rRNA), exhibit concerted evolution, a pattern thought to result from the homogenisation of rDNA arrays. However rDNA homogeneity at the single nucleotide
Fulnecek, Jaroslav, Nichols, Richard, Simon Renny-Byfield, Macas Jiří, Kovařík Aleš, Aleš Kovařík, Kovarik, A, Grandbastien Marie-Angele, Andrew Leitch, Renny-Byfield Simon, Leitch Andrew, Kovarik, Ales, Roman Matyášek, Matyasek, R, Macas, Jiri, Macas, J, Richard Nichols, Renny-Byfield, Simon, Nichols Richard, Marie-Angele Grandbastien, Jaroslav Fulneček, Leitch, A, Grandbastien, Marie Angele, Leitch, Andrew, Renny-Byfield, S, Nichols, R, Jiří Macas, Matyášek Roman, Fulneček Jaroslav, Grandbastien, M-A, Fulnecek, J, Matyasek, Roman   +31 more
core   +1 more source

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

Anales 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

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

Frontiers 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, Elizaveta S. Ershova, Elizaveta S. Ershova, Roman V. Veiko, Pavel E. Umriukhin, Pavel E. Umriukhin, Pavel E. Umriukhin, Marat V. Kurmyshev, Georg P. Kostyuk, Sergey I. Kutsev, Svetlana V. Kostyuk, Svetlana V. Kostyuk   +11 more
doaj   +1 more source

Acute caffeine treatment protects the developing retina from ischemia‐induced cell death

FEBS Open Bio, EarlyView.
Caffeine reduces cell death in the developing retina under ischemia (OGD). This effect does not involve BDNF upregulation or antioxidant pathways (NRF2/VEGF). Neuroprotection occurs mainly through adenosine A2A receptor antagonism, decreasing glutamate release and excitotoxicity, highlighting caffeine's potential as an acute neuroprotective agent in ...
Amanda Alves Nascimento, Danniel Pereira‐Figueiredo, Gabriella Grossi de Lima Dias, Gabriel Ferreira dos Santos, Mariana Rodrigues Pereira, Rafael Brito, Karin C Calaza   +6 more
wiley   +1 more source

Microvariation artifacts introduced by PCR and cloning of closely related 16S rRNA gene sequences

, 2001
A defined template mixture of seven closely related 16S-rDNA clones was used in a PCR-cloning experiment to assess and track sources of artifactual sequence variation in 16S rDNA clone libraries. At least 14% of the recovered clones contained aberrations.
Speksnijder, Arjen, Jong, S., de, Kowalchuk, G.A., Stephen, J.R., De Jong, S., Speksnijder, A.G.C.L., Jong, S. de, Kline, E., Laanbroek, H.J.   +8 more
core   +1 more source

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

BMC 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, Yuxin Zhang, Huan Qin, Chongqing Wang, Xu Huang, Li Yang, Tingting Yu, Xidan Xu, Xiang Luo, Qinbo Qin, Shaojun Liu   +10 more
doaj   +1 more source

Sudden anaerobization in Amphibacillus xylanus increases intracellular labile ferrous iron and inhibits cell growth

FEBS Open Bio, EarlyView.
Abruptly changing from aerobic to anaerobic conditions (sudden anaerobization) induced growth inhibition and a significant increase in intracellular labile ferrous iron in the aerotolerant anaerobe Amphibacillus xylanus. We found that free flavins mediate efficient electron transfer from NADH to ferric iron under anaerobic conditions, suggesting that ...
Shinya Kimata, Yoichi Sakai, Keisuke Tanaka, Etsuro Yoshimura, Ken Kitano, Morio Ishikawa, Tadahiro Nakamoto, Tsutomu Takayama, Hirofumi Inoue, Kaho Nomura, Tomonori Suzuki, Masataka Uchino, Akira Abe, Youichi Niimura   +13 more
wiley   +1 more source

Phosphorylation events surrounding the DNA damage response in "Saccharomyces cerevisiae" [PDF]

, 2007
Protein phosphorylation mediated by checkpoint kinases is crucial for the cellular response to DNA damage. The sensor kinases Mec1 and Tel1 initiate the checkpoint signaling cascade by directly activating the checkpoint effector kinase Rad53.
Schleker, Thomas Andreas
core   +1 more source

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

Journal 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, Fanelli Elena, Vovlas Alessio, Troccoli Alberto, Jamali Salar, De Luca Francesca   +5 more
doaj   +1 more source

Effects of IGFBP4 deficiency on human preadipocyte proliferation and differentiation through the IGF1R/AKT pathway

FEBS Open Bio, EarlyView.
IGFBP4 knockdown (KD) impairs preadipocyte proliferation and is associated with IGF1R protein downregulation and attenuated AKT phosphorylation. The mechanisms by which IGFBP4 KD influences the IGF1R/AKT signaling pathway involve newly synthesized proteins and lysosomal degradation pathways. Created in BioRender.
Yujia Guo, Sandy Richter, Christoph Bach, Wieland Kiess, Anna Kirstein, Diana Le Duc, Antje Garten   +6 more
wiley   +1 more source