Results 1 to 10 of about 50,876 (243)

Exogenous Coronavirus Interacts With Endogenous Retrotransposon in Human Cells

open access: yesFrontiers in Cellular and Infection Microbiology, 2021
There is an increased global outbreak of diseases caused by coronaviruses affecting respiratory tracts of birds and mammals. Recent dangerous coronaviruses are MERS-CoV, SARS-CoV, and SARS-CoV-2, causing respiratory illness and even failure of several ...
Ying Yin   +10 more
doaj   +2 more sources

Retrotransposon-induced mosaicism in the neural genome [PDF]

open access: yesOpen Biology, 2018
Over the past decade, major discoveries in retrotransposon biology have depicted the neural genome as a dynamic structure during life. In particular, the retrotransposon LINE-1 (L1) has been shown to be transcribed and mobilized in the brain ...
Gabriela O. Bodea   +2 more
doaj   +2 more sources

Switching of dominant retrotransposon silencing strategies from posttranscriptional to transcriptional mechanisms during male germ-cell development in mice. [PDF]

open access: yesPLoS Genetics, 2017
Mammalian genomes harbor millions of retrotransposon copies, some of which are transpositionally active. In mouse prospermatogonia, PIWI-interacting small RNAs (piRNAs) combat retrotransposon activity to maintain the genomic integrity.
Kota Inoue   +4 more
doaj   +2 more sources

An age-of-allele test of neutrality for transposable element insertions [PDF]

open access: yesGenetics. 2014 Feb;196(2):523-38, 2012
How natural selection acts to limit the proliferation of transposable elements (TEs) in genomes has been of interest to evolutionary biologists for many years. To describe TE dynamics in populations, many previous studies have used models of transposition-selection equilibrium that rely on the assumption of a constant rate of transposition.
Bergman, Casey M.   +3 more
arxiv   +4 more sources

Enigma of Retrotransposon Biology in Mammalian Early Embryos and Embryonic Stem Cells

open access: yesStem Cells International, 2018
Retrotransposons comprise a significant fraction of mammalian genome with unclear functions. Increasing evidence shows that they are not just remnants of ancient retroviruses but play important roles in multiple biological processes. Retrotransposons are
Ying Yin, Liquan Zhou, Shuiqiao Yuan
doaj   +2 more sources

Reverse Mutations in Pigmentation Induced by Sodium Azide in the IR64 Rice Variety [PDF]

open access: yesCurrent Issues in Molecular Biology
Pigmentation in rice is due mainly to the accumulation of anthocyanins. Five color mutant lines, AZ1701, AZ1702, AZ1711, AZ1714, and AZ1715, derived from the sodium azide mutagenesis on the non-pigmented IR64 variety, were applied to study inheritance ...
Hsian-Jun Chen   +6 more
doaj   +2 more sources

Repeats as global DNA methylation marker in bovine preimplantation embryos [PDF]

open access: yesCzech Journal of Animal Science, 2017
DNA methylation undergoes dynamic changes and is a crucial part of the epigenetic regulation during mammalian early development. To determine the DNA methylation levels in bovine embryos, we applied a bisulfite sequencing based method aimed at repetitive
Wenwen Li, Ann Van Soom, Luc Peelman
doaj   +4 more sources

Structure of the R2 non-LTR retrotransposon initiating target-primed reverse transcription

open access: yesScience, 2023
Non–long terminal repeat (non-LTR) retrotransposons, or long interspersed nuclear elements (LINEs), are an abundant class of eukaryotic transposons that insert into genomes by target-primed reverse transcription (TPRT). During TPRT, a target DNA sequence
M. E. Wilkinson   +3 more
semanticscholar   +1 more source

Loss of heterochromatin and retrotransposon silencing as determinants in oocyte aging

open access: yesAging Cell, 2022
Mammalian oocyte quality reduces with age. We show that prior to the occurrence of significant aneuploidy (9M in mouse), heterochromatin histone marks are lost, and oocyte maturation is impaired.
Peera Wasserzug-Pash   +11 more
semanticscholar   +1 more source

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