Results 41 to 50 of about 12,240 (201)
Getting closer to a pre-vertebrate genome: the non-LTR retrotransposons of
International Journal of Biological Sciences, 2006 Non-LTR retrotransposons are common in vertebrate genomes and although present in invertebrates they appear at a much lower frequency. The cephalochordate amphioxus is the closest living relative to vertebrates and has been considered a good model for ...
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A highly conserved, small LTR retrotransposon that preferentially targets genes in grass genomes. [PDF]
PLoS ONE, 2012 LTR retrotransposons are often the most abundant components of plant genomes and can impact gene and genome evolution. Most reported LTR retrotransposons are large elements (>4 kb) and are most often found in heterochromatic (gene poor) regions.
Dongying Gao +4 more
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The analysis of Circe, an LTR retrotransposon of Drosophila melanogaster, suggests that an insertion of non-LTR retrotransposons into LTR elements can create chimeric retroelements [PDF]
Molecular Biology and Evolution, 1999 Circe is a transposable element recently identified in Drosophila melanogaster which appears to be mostly associated with the constitutive heterochromatin. This element shows the structural features of a long terminal repeat (LTR)-containing retrotransposon: It is flanked by 240-bp-long terminal repeats, and its two open reading frames encode putative ...
A, Losada +3 more
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LTR retrotransposons and the evolution of dosage compensation in Drosophila [PDF]
BMC Molecular Biology, 2008 Dosage compensation in Drosophila is the epigenetic process by which the expression of genes located on the single X-chromosome of males is elevated to equal the expression of X-linked genes in females where there are two copies of the X-chromosome. While epigenetic mechanisms are hypothesized to have evolved originally to silence transposable elements,
Matyunina, Lilya V. +2 more
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BMC Plant Biology, 2019 Background Miniature inverted-repeat transposable elements (MITEs) and long terminal repeat (LTR) retrotransposons are ubiquitous in plants genomes, and highly important in their evolution and diversity.
Yan Liu +8 more
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Mobile DNA, 2010 Non-long terminal repeat (non-LTR) retrotransposons are present in most eukaryotic genomes. In some species, such as humans, these elements are the most abundant genome sequence and continue to replicate to this day, creating a source of endogenous ...
Han Jeffrey S
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The diversity of LTR retrotransposons.
Genome biology, 2004 Eukaryotic genomes are full of long terminal repeat (LTR) retrotransposons. Although most LTR retrotransposons have common structural features and encode similar genes, there is nonetheless considerable diversity in their genomic organization, reflecting the different strategies they use to proliferate within the genomes of their hosts.
Havecker, Ericka R +2 more
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Hypermethylated LTR retrotransposon exhibits enhancer activity [PDF]
Epigenetics, 2017 LTR retrotransposons are repetitive DNA elements comprising ∼10% of the human genome. They are silenced by hypermethylation of cytosines in CpG dinucleotides and are considered parasitic DNA serving no useful function for the host genome. However, hypermethylated LTRs contain enhancer and promoter sequences and can promote tissue-specific transcription
Tianxiang Hu +5 more
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Frontiers in Genetics, 2013 The molecular mechanisms of the transposition of non-long terminal repeat (non-LTR) retrotransposons are not well understood; the key questions of how the 3’-ends of cDNA copies integrate and how site-specific integration occurs remain unresolved ...
Dmitry V. Mukha +3 more
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Reverse Transcription of Retroviruses and LTR Retrotransposons [PDF]
Microbiology Spectrum, 2015 ABSTRACT The enzyme reverse transcriptase (RT) was discovered in retroviruses almost 50 years ago. The demonstration that other types of viruses, and what are now called retrotransposons, also replicated using an enzyme that could copy RNA into DNA came a few years later.
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