Results 41 to 50 of about 45,751 (265)
Iheringia: Série Zoologia, 2002 Using conventional staining with acetic orcein and C-banding techniques it was investigated constitutive heterochromatin chromosomal polymorphisms and the mitotic and the meiotic behavior of male and female chromosomes of Boophilus microplus (Canestrini,
Rosane Nunes Garcia +3 more
doaj +1 more source
A computational model for histone mark propagation reproduces the distribution of heterochromatin in different human cell types [PDF]
PLoS ONE 8(9): e73818, 2013 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. Histone proteins are implicated in the regulation of eukaryote genes and they carry numerous reversible post-translational modifications
arxiv +1 more source
Brazilian Journal of Biology, 2021 The karyotype and constitutive heterochromatin pattern of the white stork Ciconia ciconia samples obtained from Manzala lake, Dimiaat, Egypt was described. Somatic cells of Ciconia ciconia samples have diploid number 2n= 68 chromosomes.
A. S. M. Abu Shnaf, M. S. Al-Khalifa
doaj +1 more source
Transcription of satellite DNAs in insects [PDF]
, 2011 Chromatin condensation is an important regulatory mechanism of gene silencing as well as gene activation for the hundreds of functional protein genes harbored in heterochromatic regions of different insect species.
D. Ugarkovic +3 more
core +1 more source
Sequence-dependent heterochromatin formation in the human malaria parasite Plasmodium falciparum
Heliyon, 2023 The human malaria parasite Plasmodium falciparum represses transcription of the gene encoding AP2-G, which is the master regulator of germ cell differentiation, via heterochromatin condensation following histone H3 lysine 9 trimethylation (H3K9me3 ...
Toshiyuki Mori, Mai Nakashima
doaj
Comparative Cytogenetics, 2017 Species in the subgenus Artibeus Leach, 1821 are widely distributed in Brazil. Conserved karyotypes characterize the group with identical diploid number and chromosome morphology.
Érica Martinha Silva de Souza +4 more
doaj +3 more sources
SUV39 SET domains mediate crosstalk of heterochromatic histone marks
eLife, 2021 The SUV39 class of methyltransferase enzymes deposits histone H3 lysine 9 di- and trimethylation (H3K9me2/3), the hallmark of constitutive heterochromatin.
Alessandro Stirpe +7 more
doaj +1 more source
The SUV39 Family of H3K9 Methyltransferases in Skeletal Muscle Stem Cells. [PDF]
FASEB BioadvThe SUV39 family members are well known for methylating the Lysine 9 of the histone H3 (H3K9) in order to compact the chromatin and contributing to gene repression. We describe their active role in proliferating and differentiating muscle stem cells, how they prevent from inflammation and fibrosis during muscle regeneration and the future avenues ...
Garcia P, Ait-Si-Ali S, Le Grand F.
europepmc +2 more sources
Chromatin insulator elements: establishing barriers to set heterochromatin boundaries [PDF]
, 2012 Epigenomic profiling has revealed that substantial portions of genomes in higher eukaryotes are organized into extensive domains of transcriptionally repressive chromatin.
Adam G West +9 more
core +1 more source
The basal level of gene expression associated with chromatin loosening shapes Waddington landscapes and controls cell differentiation [PDF]
J. Mol. Biol. 432 (2020) 2253-2270, 2020 The baseline level of transcription, which is variable and difficult to quantify, seriously complicates the normalization of comparative transcriptomic data, but its biological importance remains unappreciated. We show that this currently neglected ingredient is essential for controlling gene network multistability and therefore cellular ...
arxiv +1 more source