Results 41 to 50 of about 2,174,246 (295)

[PROVISIONAL] Does the chromosomal position of 35S rDNA sites influence their transcription? A survey on Nothoscordum species (Amaryllidaceae)

Genetics and Molecular Biology
35S ribosomal DNA (rDNA) sites are the regions where the ribosomal genes 18S, 5.8S and 25S, responsible for the formation of the nucleoli, are found. The fact that rDNA sites have non-random distribution on chromosomes suggests that their position on the
Mariana Báez, Gustavo Souza, Marcelo Guerra   +2 more
doaj   +1 more source

Клинические особенности течения аллергического ринита и их взаимосвязь с активностью белоксинтезирующего аппарата клетки

Архивъ внутренней медицины, 2016
This article describes clinical and cytogenetic peculiarities of children’s allergic rhinitis. The dates of changes of the functional activity of ribosomal genes at children’s allergic rhinitis are received.
Н. В. Стабровская, В. П. Иванов, Е. В. Трубникова, А. Д. Богомазов, А. А. Дедков, Е. Л. Полякова   +5 more
doaj   +1 more source

Identification of Key Genes and Pathways Involved in Circulating Tumor Cells in Colorectal Cancer

Analytical Cellular Pathology, 2022
Background. Characterization of the features associated with circulating tumor cells (CTCs) is one of major interests for predicting clinical outcome of colorectal cancer (CRC) patients.
Ruijun Pan, Chaoran Yu, Yanfei Shao, Hiju Hong, Jing Sun, Zhou Zhang, Peiyong Li, Minhua Zheng   +7 more
doaj   +1 more source

Detailed cytogenetic analysis of three duck species (the northern pintail, mallard, and common goldeneye) and karyotype evolution in the family Anatidae (Anseriformes, Aves)

Вавиловский журнал генетики и селекции
Galliformes and Anseriformes are two branches of the Galloanserae group, basal to other Neognathae. In contrast to Galliformes, Anseriformes have not been thoroughly researched by cytogenetic methods.
V. R. Beklemisheva, K. V. Tishakova, S. A. Romanenko, D. A. Andreushkova, V. A. Yudkin, E. А. Interesova, F. Yang, M. A. Ferguson-Smith, A. S. Graphodatsky, A. A. Proskuryakova   +9 more
doaj   +1 more source

Unexpected absence of ribosomal protein genes from metagenome-assembled genomes

ISME Communications, 2022
Metagenome-assembled genomes (MAGs) have revealed the hidden diversity and functions of uncultivated microbes, but their reconstruction from metagenomes remains a computationally difficult task.
Kazumori Mise, Wataru Iwasaki
doaj   +1 more source

Comparative molecular cytogenetics in Melipona Illiger species (Hymenoptera, Apidae)

Sociobiology, 2018
Cytogenetic studies in Melipona are scarce with only 24 species analyzed cytogenetically. Of these, six species had the rDNA sites physically mapped and characterized by Fluorescent in situ Hybridization (fish).
Vanderly Andrade-Souza, Olivia Maria Pereira Duarte, Cinthia Caroline Cardoso Martins, Igor Silva Santos, Márcio Gilberto Cardoso Costa, Marco Antonio Costa   +5 more
doaj   +1 more source

Cytogenetic studies in Trachymyrmex holmgreni Wheeler, 1925 (Formicidae: Myrmicinae) by conventional and molecular methods

Sociobiology, 2018
Over the past several decades, ant cytogenetic studies have focused on chromosome number and morphology; however, recently, additional information concerning heterochromatin composition and 45S rDNA location has become accessible. The fungus-growing ants
Luísa Antônia Campos Barros, Gisele Amaro Teixeira, Hilton Jeferson Alves Cardoso de Aguiar, Denilce Meneses Lopes, Silvia das Graças Pompolo   +4 more
doaj   +1 more source

Ligand‐dependent transcriptional heterogeneity in cell cycle gene expression delays G1/S entry

FEBS Letters, EarlyView.
EGF and HRG induce distinct G1/S progression programs in ErbB2‐amplified BT474 breast cancer cells. Despite activating the potent ErbB2–ErbB3 heterodimer, HRG does not accelerate cell‐cycle entry. Instead, EGF promotes earlier restriction‐point passage via ERK–FOS signaling, whereas HRG activates the AKT–MYC axis, driving transcriptional heterogeneity ...
Ririn Rahmala Febri, Ayaka Nagasato‐Ichikawa, Keita Iida, Shuhei Kimura, Akira Imamoto, Mariko Okada   +5 more
wiley   +1 more source

Differentiation and genetic analysis of Rhodnius prolixus and Rhodnius colombiensis by rDNA and RAPD amplification

Memorias do Instituto Oswaldo Cruz, 2001
Domiciliated Rhodnius prolixus and sylvatic R. colombiensis were analyzed in order to confirm their genetic divergence and verify the risk that the latter represents in the domiciliation process, and to provide tools for identifying the sources of ...
Carlos Jaramillo, María Fernanda Montaña, Lyda Raquel Castro, Gustavo A Vallejo, Felipe Guhl   +4 more
doaj   +1 more source

Varying strength of selection contributes to the intragenomic diversity of rRNA genes

Nature Communications, 2022
Ribosomal RNA genes are abundant in eukaryotic genomes and code for the universal and essential RNA components of the ribosome. This study uncovers high sequence diversity of the genes within a single species and discusses the contribution of selection ...
Daniel Sultanov, Andreas Hochwagen
doaj   +1 more source