The formation and evolution of centromeric satellite repeats in Saccharum species

2021 ◽  
Author(s):  
Yongji Huang ◽  
Wenjie Ding ◽  
Muqing Zhang ◽  
Jinlei Han ◽  
Yanfen Jing ◽  
...  
Keyword(s):  
Saccharum Species ◽  
Centromeric Satellite ◽  
Satellite Repeats ◽  
Formation And Evolution

scholarly journals The ZBTB24-CDCA7 axis regulates HELLS enrichment at centromeric satellite repeats to facilitate DNA methylation

2020 ◽  
Vol 11 (3) ◽  
pp. 214-218 ◽  
Author(s):  
Swanand Hardikar ◽  
Zhengzhou Ying ◽  
Yang Zeng ◽  
Hongbo Zhao ◽  
Bigang Liu ◽  
...  
Keyword(s):  
Dna Methylation ◽  
Centromeric Satellite ◽  
Satellite Repeats

scholarly journals Differential Regulation of Strand-Specific Transcripts from Arabidopsis Centromeric Satellite Repeats

PLoS Genetics ◽  
2005 ◽  
Vol 1 (6) ◽  
pp. e79 ◽  
Author(s):  
Bruce P May ◽  
Zachary B Lippman ◽  
Yuda Fang ◽  
David L Spector ◽  
Robert A Martienssen
Keyword(s):  
Differential Regulation ◽  
Centromeric Satellite ◽  
Satellite Repeats

scholarly journals KDM2A represses transcription of centromeric satellite repeats and maintains the heterochromatic state

Cell Cycle ◽  
2008 ◽  
Vol 7 (22) ◽  
pp. 3539-3547 ◽  
Author(s):  
David Frescas ◽  
Daniele Guardavaccaro ◽  
Shafi M. Kuchay ◽  
Hiroyuki Kato ◽  
Andrey Poleshko ◽  
...  
Keyword(s):  
Centromeric Satellite ◽  
Satellite Repeats

AFM study of the dynamics of α-alumina surface faceting during high-temperature processing

1995 ◽  
Vol 53 ◽  
pp. 334-335 ◽  
Author(s):  
Michael W. Bench ◽  
Jason R. Heffelfinger ◽  
C. Barry Carter
Keyword(s):  
High Temperature ◽  
Thin Foil ◽  
Sem Analysis ◽  
Conductive Coatings ◽  
Force Microscopy ◽  
Minimal Sample ◽  
Atomic Force ◽  
Formation And Evolution ◽  
High Temperature Processing ◽  
Nominal Surface

To gain a better understanding of the surface faceting that occurs in α-alumina during high temperature processing, atomic force microscopy (AFM) studies have been performed to follow the formation and evolution of the facets. AFM was chosen because it allows for analysis of topographical details down to the atomic level with minimal sample preparation. This is in contrast to SEM analysis, which typically requires the application of conductive coatings that can alter the surface between subsequent heat treatments. Similar experiments have been performed in the TEM; however, due to thin foil and hole edge effects the results may not be representative of the behavior of bulk surfaces.The AFM studies were performed on a Digital Instruments Nanoscope III using microfabricated Si3N4 cantilevers. All images were recorded in air with a nominal applied force of 10-15 nN. The alumina samples were prepared from pre-polished single crystals with (0001), , and nominal surface orientations.

DNA methylation in satellite repeats disorders

2019 ◽  
Vol 63 (6) ◽  
pp. 757-771 ◽  
Author(s):  
Claire Francastel ◽  
Frédérique Magdinier
Keyword(s):  
Dna Methylation ◽  
Human Genome ◽  
Repetitive Dna ◽  
Dna Sequences ◽  
Satellite Repeats ◽  
Tremendous Progress ◽  
Genes Encoding ◽  
Dna Elements ◽  
Near Future

Abstract Despite the tremendous progress made in recent years in assembling the human genome, tandemly repeated DNA elements remain poorly characterized. These sequences account for the vast majority of methylated sites in the human genome and their methylated state is necessary for this repetitive DNA to function properly and to maintain genome integrity. Furthermore, recent advances highlight the emerging role of these sequences in regulating the functions of the human genome and its variability during evolution, among individuals, or in disease susceptibility. In addition, a number of inherited rare diseases are directly linked to the alteration of some of these repetitive DNA sequences, either through changes in the organization or size of the tandem repeat arrays or through mutations in genes encoding chromatin modifiers involved in the epigenetic regulation of these elements. Although largely overlooked so far in the functional annotation of the human genome, satellite elements play key roles in its architectural and topological organization. This includes functions as boundary elements delimitating functional domains or assembly of repressive nuclear compartments, with local or distal impact on gene expression. Thus, the consideration of satellite repeats organization and their associated epigenetic landmarks, including DNA methylation (DNAme), will become unavoidable in the near future to fully decipher human phenotypes and associated diseases.

The First Galaxies in the Universe

2013 ◽  
Author(s):  
Abraham Loeb ◽  
Steven R. Furlanetto
Keyword(s):  
Galaxy Evolution ◽  
Big Bang ◽  
First Stars ◽  
Distant Galaxies ◽  
Formation And Evolution ◽  
Early Galaxies ◽  
First Galaxies ◽  
Large Telescopes ◽  
New Generation ◽  
The Big Bang

This book provides a comprehensive, self-contained introduction to one of the most exciting frontiers in astrophysics today: the quest to understand how the oldest and most distant galaxies in our universe first formed. Until now, most research on this question has been theoretical, but the next few years will bring about a new generation of large telescopes that promise to supply a flood of data about the infant universe during its first billion years after the big bang. This book bridges the gap between theory and observation. It is an invaluable reference for students and researchers on early galaxies. The book starts from basic physical principles before moving on to more advanced material. Topics include the gravitational growth of structure, the intergalactic medium, the formation and evolution of the first stars and black holes, feedback and galaxy evolution, reionization, 21-cm cosmology, and more.

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