Results 51 to 60 of about 33,173 (272)
The occurrence of transposable elements (TEs) is a ubiquitous characteristic of eukaryotic genomes, and these sequences are highly abundant in some species. Due to their large genomes, grasshoppers (Orthoptera) appear to be potentially good candidates in
Octavio M. PALACIOS-GIMENEZ+2 more
doaj +1 more source
TALEN outperforms Cas9 in editing heterochromatin target sites
While Cas9 outperforms TALENs in euchromatin, it is less efficient in heterochromatic regions. Here the authors, using single-molecule imaging, show that Cas9 uses a less efficient search strategy compared to TALENs in these regions.
Surbhi Jain+12 more
doaj +1 more source
A computational model for histone mark propagation reproduces the distribution of heterochromatin in different human cell types [PDF]
Chromatin is a highly compact and dynamic nuclear structure that consists of DNA and associated proteins. The main organizational unit is the nucleosome, which consists of a histone octamer with DNA wrapped around it.
Jensen, Ole Nørregaard+1 more
core +4 more sources
Evolutionary History of Alpha Satellite DNA Repeats Dispersed within Human Genome Euchromatin
Major human alpha satellite DNA repeats are preferentially assembled within (peri)centromeric regions but are also dispersed within euchromatin in the form of clustered or short single repeat arrays.
I. Feliciello+4 more
semanticscholar +1 more source
Accessibility of promoter DNA is not the primary determinant of chromatin-mediated gene regulation [PDF]
DNA accessibility is thought to be of major importance in regulating gene expression. We test this hypothesis using a restriction enzyme as a probe of chromatin structure and as a proxy for transcription factors.
Chereji, Razvan V.+4 more
core +1 more source
Background Chromosomes are subdivided spatially to delimit long-range interactions into topologically associating domains (TADs). TADs are often flanked by chromatin insulators and transcription units that may participate in such demarcation. Remarkably,
Alexandre Heurteau+6 more
semanticscholar +1 more source
The Epstein-Barr Virus Episome Maneuvers between Nuclear Chromatin Compartments during Reactivation. [PDF]
The human genome is structurally organized in three-dimensional space to facilitate functional partitioning of transcription. We learned that the latent episome of the human Epstein-Barr virus (EBV) preferentially associates with gene-poor chromosomes ...
Fernandez, Samantha G+7 more
core +1 more source
Theoretical analysis of the role of chromatin interactions in long-range action of enhancers and insulators [PDF]
Long-distance regulatory interactions between enhancers and their target genes are commonplace in higher eukaryotes. Interposed boundaries or insulators are able to block these long distance regulatory interactions.
A. M. Sengupta+39 more
core +3 more sources
Long interspersed nuclear element‐1 (LINE‐1 or L1) reactivation is linked to poor prognosis in non‐small‐cell lung carcinoma (NSCLC), but the molecular bases of this response remain largely unknown.
Pasano Bojang Jr., Kenneth S. Ramos
doaj +1 more source
Involvement of DNA mismatch repair in the maintenance of heterochromatic DNA stability in Saccharomyces cerevisiae. [PDF]
Heterochromatin contains a significant part of nuclear DNA. Little is known about the mechanisms that govern heterochromatic DNA stability. We show here that in the yeast Saccharomyces cerevisiae (i) DNA mismatch repair (MMR) is required for the ...
Basanta K Dahal+6 more
doaj +1 more source