Long terminal repeats
-
The impact of Fe2+ (iron)toxicity on genomic instability, DNA methylation status, and Long Terminal Repeat Retrotransposons (LTR RTs) polymorphisms on Zea mays is unknown. We investigated the toxicity of Fe2+ using Random Amplified Polymorphic DNA (RAPD), Coupled Restriction Enzyme Digestion-Random Amplification (CRED-RA) and Inter Retrotransposon Amplified Polymorphism (IRAP) assays in Zea mays seedlings, respectively.
8p lyhuyenthu 31-01-2023 6 2 Download
-
Genomic imprinting is an epigenetic phenomenon that allows a subset of genes to be expressed mono-allelically based on the parent of origin and is typically regulated by differential DNA methylation inherited from gametes.
17p vielonmusk 30-01-2022 6 1 Download
-
Terminal repeat retrotransposons in miniature (TRIMs) are a unique group of small long terminal repeat retrotransposons that are difficult to identify. Thus far, only a few TRIMs have been characterized in the euphyllophytes, and their evolutionary and biological significance as well as their transposition mechanisms are poorly understood.
17p viaristotle 29-01-2022 5 0 Download
-
An association between hammerhead ribozymes and non-autonomous, long terminal repeat retrotransposons is uncovered in plants, shedding light on the biological function of genomically encoded ribozymes.
3p viaristotle 29-01-2022 7 0 Download
-
Short interspersed elements (SINEs) represent the most abundant group of non-long-terminal repeat transposable elements in mammalian genomes. In primates, Alu elements are the most prominent and homogenous representatives of SINEs. Due to their frequent insertion within or close to coding regions, SINEs have been suggested to play a crucial role during genome evolution.
16p viaristotle 29-01-2022 31 0 Download
-
Eastern Mediterranean is considered as a center of diversity of Cynodon spp. (Bermudagrass). Phylogenetic analysis from diploids to hexaploids can help our understanding underlying mechanism of polyploidization. Inter-primer binding site (iPBS) markers amplify highly polymorphic long terminal repeat retrotransposons. The objectives were to (1) investigate associations between ploidy level and genetic diversity based on iPBS markers and (2) correlate between similarity matrices of iPBS retrotransposon marker and four nuclear molecular marker systems for Cynodon accessions’ genetic analyses.
13p tudichquannguyet 29-11-2021 9 1 Download
-
Many studies have shown that guanine-rich DNA sequences form quadruplex structures (G4) in vitro but there is scarce evidence of guanine quadruplexes in vivo. The majority of potential quadruplex-forming sequences (PQS) are located in transposable elements (TEs), especially close to promoters within long terminal repeats of plant LTR retrotransposons.
11p vibeauty 23-10-2021 5 0 Download
-
The three superfamilies of Long Terminal Repeat (LTR) retrotransposons are a widespread kind of transposable element and a major factor in eukaryotic genome evolution. In metazoans, recent studies suggested that Copia LTR-retrotransposons display specific dynamic compared to the more abundant and diverse Gypsy elements. Indeed, Copia elements show a relative scarcity and the prevalence of only a few clades in specific hosts. Thus, BEL/Pao seems to be the second most abundant superfamily.
18p vitzuyu2711 29-09-2021 13 1 Download
-
Long terminal repeat retrotransposons are the most abundant transposons in plants. They play important roles in alternative splicing, recombination, gene regulation, and defense mechanisms. Large-scale sequencing projects for plant genomes are currently underway.
14p visilicon2711 20-08-2021 11 1 Download
-
Transposable elements (TEs) are fragments of DNA that can insert into new chromosomal locations. They represent a great proportion of eukaryotic genomes. The identification and characterization of TEs facilitates understanding the transpositional activity of TEs with their effects on the orchid genome structure.
13p vijeeni2711 30-06-2021 8 1 Download
-
The marine diatoms Thalassiosira pseudonana and Phaeodactylum tricornutum are valuable model organisms for exploring the evolution, diversity and ecology of this important algal group. Their reference genomes, published in 2004 and 2008, respectively, were the product of traditional Sanger sequencing.
25p vilichoo2711 23-06-2021 12 1 Download
-
Long Terminal Repeat retrotransposons (LTR retrotransposons) are mobile genetic elements composed of a few genes between terminal repeats and, in some cases, can comprise over half of a genome’s content.
11p vilichoo2711 23-06-2021 13 2 Download
-
Long Terminal Repeat retrotransposons (LTR-REs) are repetitive DNA sequences that constitute a large part of the genome. The improvement of sequencing technologies and sequence assembling strategies has achieved genome sequences with much greater reliability than those of the past, especially in relation to repetitive DNA sequences.
18p vijichea2711 28-05-2021 4 1 Download
-
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.
16p vishikamaru2711 25-04-2020 7 0 Download
-
In continuation of our reports on the chemical constituents of Croton tonkinensis Gagnep. (Euphorbiaceae) [1] this paper deals with the isolation and structure elucidation of two long chain alkyl alcohols. Two compounds 1 and 2 were isolated by repeated silica gel column chromatography of the n-hexane soluble fraction obtained from the methanol extract of the dried leaves of C. tonkinensis by liquid - liquid fractionation [2]. The long aliphatic chains of both compounds 1 and 2 were characterized by the 1 H and 13 C NMR spectra: H 0.88 (3H, t, J = 6.6 Hz), C 14.
1p uocvong04 24-09-2015 32 4 Download
-
The gene encoding an integrase of Mason–Pfizer monkey virus (M-PMV) is located at the 3¢-end of the pol open reading frame. The M-PMV integ-rase has not been previously isolated and characterized. We have now cloned, expressed, isolated, and characterized M-PMV integrase and com-pared its activities and primary structure with those of HIV-1 and other retroviral integrases. M-PMV integrase prefers untranslated 3¢-region-derived long-terminal repeat sequences in both the 3¢-processing and the strand transfer activity assays.
14p awards 05-04-2013 38 4 Download
-
The genome of the human pathogenEntamoeba histolytica, a primitive pro-tist, contains non-long terminal repeat retrotransposable elements called EhLINEs. These encode reverse transcriptase and endonuclease required for retrotransposition. The endonuclease shows sequence similarity with bacterial restriction endonucleases.
13p vinaphone15 25-02-2013 33 1 Download
-
Long terminal repeats (LTR) of endogenous retroviruses com-prise about 8% of human genome. Typical LTR contains a set of regulatory elements: promoters, enhancers, polyadenilation sites, which can take part in neighbouring genes expression regu-lation.
262p viettel02 22-02-2013 83 17 Download
-
vComparative functional analysis of Jembrana disease virus Tat protein on lentivirus long terminal repeat promoters: evidence for flexibility at its N-terminus
14p dauphong4 24-12-2011 43 2 Download
-
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. reports deposited research Transposons are mobile genetic elements that can multiply in the genome using a variety of mechanisms. Retrotransposons replicate through...
0p thulanh21 15-11-2011 43 1 Download