Results 81 to 90 of about 6,135 (207)

Diurnal control of H3K27me1 deposition shapes expression of a subset of cell cycle and DNA damage response genes

open access: yesThe Plant Journal, Volume 120, Issue 6, Page 2325-2336, December 2024.
Significance Statement We ask here how diurnal changes impact chromatin modifications and gene expression. We have found that H3K27me1 is preferentially deposited during the night along the bodies of cell cycle and DNA damage response genes. Our study highlights the relevance of the diurnal control of the chromatin landscape of genes involved in genome
Jorge Fung‐Uceda   +4 more
wiley   +1 more source

Additional file 4 of NODeJ: an ImageJ plugin for 3D segmentation of nuclear objects

open access: yes, 2022
Additional file 4: Fig. S1. Robustness of NODeJ object detection in relation to image noise. Briefly,an artificial dataset of 1526 individual 3D images of nuclei was generated, and different levels of noise were added to generate 9156 images.
Christophe Tatout (7105982)   +8 more
core   +1 more source

Variation of the interphase heterochromatin in Artemia (Crustacea, Anostraca) of the Americas is related to changes in nuclear size and ionic composition of hipersaline habitats

open access: yesBrazilian Journal of Biology
The populations of Artemia (or brine shrimp) from the Americas exhibit a wide variation in the amount of interphase heterochromatin. There is interest in understanding how this variation affects different parameters, from the cellular to the organismal ...
M. Parraguez, G. Gajardo
doaj   +1 more source

The histone chaperones ASF1 and HIRA are required for telomere length and 45S rDNA copy number homeostasis

open access: yesThe Plant Journal, Volume 120, Issue 3, Page 1125-1141, November 2024.
Significance Statement The H3 histone chaperones ANTI‐SILENCING FUNCTION 1 (ASF1) and HISTONE REGULATOR A (HIRA) are crucial for telomere length homeostasis, 45S rRNA gene silencing, and determination of 45S rDNA copy number. ASF1 affects heterochromatin organization, and its function is linked to the telomere protective complex through possible ...
Adéla Machelová   +12 more
wiley   +1 more source

Additional file 1 of NODeJ: an ImageJ plugin for 3D segmentation of nuclear objects

open access: yes, 2022
Additional file 1. Results of NODeJ analysis. List of output parameters obtained for each nucleus and for each chromocenter of the four datasets used in NODeJ validation [8, 9, 16].
Christophe Tatout (7105982)   +8 more
core   +1 more source

Cytogenetic study on Artemia from Urmiyah lake

open access: yes‬‭Majallah-i ̒Ilmī-i Shīlāt-i Īrān, 2001
To determine the chromosome numbers of artemia brine-shrimp in Urmiyah Lake (Azarbaijan-e- Gharhi province), cytogenetic studies were carried out on artemia cysts.
M. Yarmohmmadi; M. Porkazemi; A. Kamali
doaj  

Hop stunt viroid infection induces heterochromatin reorganization

open access: yesNew Phytologist, Volume 243, Issue 6, Page 2351-2367, September 2024.
Summary Viroids are pathogenic noncoding RNAs that completely rely on their host molecular machinery to accomplish their life cycle. Several interactions between viroids and their host molecular machinery have been identified, including interference with epigenetic mechanisms such as DNA methylation.
Joan Marquez‐Molins   +7 more
wiley   +1 more source

Replication-coupled histone H3.1 deposition determines nucleosome composition and heterochromatin dynamics during Arabidopsis seedling development

open access: yes, 2019
Developmental phase transitions are often characterized by changes in the chromatin landscape and heterochromatin reorganization. In Arabidopsis, clustering of repetitive heterochromatic loci into so-called chromocenters is an important determinant of ...
Simon, Lauriane,   +1 more
core   +1 more source

Photodamage repair pathways contribute to the accurate maintenance of the DNA methylome landscape upon UV exposure.

open access: yesPLoS Genetics, 2019
Plants are exposed to the damaging effect of sunlight that induces DNA photolesions. In order to maintain genome integrity, specific DNA repair pathways are mobilized.
Stéfanie Graindorge   +4 more
doaj   +1 more source

HHV-8 encoded LANA-1 alters the higher organization of the cell nucleus

open access: yesMolecular Cancer, 2007
The latency-associated nuclear antigen (LANA-1) of Human Herpes Virus 8 (HHV-8), alternatively called Kaposi Sarcoma Herpes Virus (KSHV) is constitutively expressed in all HHV-8 infected cells.
Klein George   +8 more
doaj   +1 more source

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