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Satellite DNA
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Satellite DNAs (satDNAs) are organized in repetitions directly contiguous to one another, forming long arrays and composing a large portion of eukaryote genomes. These sequences evolve according to the concerted evolution model, and homogenization of repeats is observed at the intragenomic level.
11p
vinarcissa
21-03-2023
4
1
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Satellite DNA sequences are the most abundant components of heterochromatin and are repeated in tandem hundreds to thousands of times in the genome. However, the number of repeats of a specific satellite family can vary even between the genomes of related species or populations.
11p
vinarcissa
21-03-2023
2
1
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Paradoxically, centromeres are known both for their characteristic repeat sequences (satellite DNA) and for being epigenetically defined. Maize (Zea mays mays) is an attractive model for studying centromere positioning because many of its large (~2 Mb) centromeres are not dominated by satellite DNA.
11p
vialfrednobel
29-01-2022
14
0
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Our results indicate that, in addition to previously reported L1 elements, various LTR and DNA transposons, as well as members of the classical satellites including HSAT5 and α-satellites (ALR/Alpha), are expressed at higher levels in late senescence. Moreover, we revealed finer links between the expression levels of repeats with the genes located near them and known to be involved in cell cycle and senescence. Noncoding elements reported here provide a new perspective to be explored in further experimental studies.
15p
thiencuuchu
27-11-2021
12
2
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Spermatozoa have a remarkable epigenome in line with their degree of specialization, their unique nature and different requirements for successful fertilization. Accordingly, perturbations in the establishment of DNA methylation patterns during male germ cell differentiation have been associated with infertility in several species. While bull semen is widely used in artificial insemination, the literature describing DNA methylation in bull spermatozoa is still scarce.
18p
vibeauty
23-10-2021
8
0
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Reconstructed monomers were used to design a satellite-specific fluorescent in situ hybridization (FISH) probe. The data were also analysed within a phylogenetic framework built using the internal transcribed spacer (ITS) sequences of 45S nuclear ribosomal DNA.
14p
vitzuyu2711
29-09-2021
21
1
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The genome of Banana bunchy top virus (BBTV) consists of at least six circular, single-stranded DNA components of ~ 1 kb in length. Some BBTV isolates may also carry satellite DNA molecules that are not essential for BBTV infection.
13p
visilicon2711
20-08-2021
8
1
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The cytogenomic study of repetitive regions is fundamental for the understanding of morphofunctional mechanisms and genome evolution. Passiflora edulis a species of relevant agronomic value, this work had its genome sequenced by next generation sequencing and bioinformatics analysis performed by RepeatExplorer pipeline.
17p
visilicon2711
20-08-2021
20
1
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The last decade witnessed a number of genome-wide studies on human pre-implantation, which mostly focused on genes and provided only limited information on repeats, excluding the satellites.
16p
visilicon2711
20-08-2021
9
1
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Sperm epigenetics is an emerging area of study supported by observations reporting that abnormal sperm DNA methylation patterns are associated with infertility. Here, we explore cytosine-guanine dinucleotides (CpGs) methylation in high (HM) and low motile (LM) Bos taurus sperm populations separated by Percoll gradient.
12p
viansan2711
30-07-2021
4
1
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Mammalian centromeres are satellite-rich chromatin domains that execute conserved roles in kinetochore assembly and chromosome segregation. Centromere satellites evolve rapidly between species, but little is known about population-level diversity across these loci.
20p
vilichoo2711
23-06-2021
10
1
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This study aimed to evaluate the genetic diversity and identify potato cultivars by SSR markers. The genomic DNA of 50 potato cultivars was amplified with nineteen Simple Sequence Repeats (SSRs) primers. Out of nineteen primers only fifteen primers were amplified and gave polymorphic bands.
12p
nguaconbaynhay8
13-10-2020
16
2
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Radish (Raphanus sativus L., 2n = 2x = 18) is a major root vegetable crop especially in eastern Asia. Radish root contains various nutritions which play an important role in strengthening immunity.
12p
vihashirama2711
21-05-2020
21
0
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Sugar beet (Beta vulgaris) is an important crop of temperate climate zones, which provides nearly 30 % of the world’s annual sugar needs. From the total genome size of 758 Mb, only 567 Mb were incorporated in the recently published genome sequence, due to the fact that regions with high repetitive DNA contents (e.g. satellite DNAs) are only partially included.
16p
vihashirama2711
21-05-2020
10
0
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Clementine mandarin (Citrus clementina Hort. ex Tan.) is one of the most famous and widely grown citrus cultivars worldwide. Variations in relation to the composition and distribution of repetitive DNA sequences that dominate greatly in eukaryote genomes are considered to be species-, genome-, or even chromosomespecific.
11p
viharuno2711
24-04-2020
48
0
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Báo cáo khoa học: Solution structure of the matrix attachment region-binding domain of chicken MeCP2
Methyl-CpG-binding protein 2 (MeCP2) is a multifunc-tional protein involved in chromatin organization and silencing of methylated DNA. MAR-BD, a 125-amino-acid residue domain of chicken MeCP2 (cMeCP2, origin-ally named ARBP), is the minimal protein fragment required to recognize MAR elements and mouse satellite DNA. Here we report the solution structure of MAR-BD as determined by multidimensional heteronuclear NMR spectroscopy.
8p
tumor12
20-04-2013
34
1
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Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Evolution of ribosomal DNA-derived satellite repeat in tomato genome
14p
panasonic06
25-12-2011
56
2
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Molecular diversity of Cotton leaf curl Gezira virus isolates and their satellite DNAs associated with okra leaf curl disease in Burkina Faso
10p
dauphong4
24-12-2011
34
3
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The complete sequence of rice centromere 8 reveals a small amount of centromere-specific satellite sequence in blocks interrupted by retrotransposons and other repetitive DNA, in an arrangement that is strikingly similar in overall size and content to other centromeres of multicellular eukaryotes. reports deposited research Shakespeare’s Juliet posed the question “What’s in a name?” to explore the connotations that a single word can hold. The name ‘centromere’ conjures many ideas from classical biology,...
5p
thulanh19
09-11-2011
39
1
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