The significance of cytogenetics for the study of karyotype evolution and taxonomy of water bugs (Heteroptera, Belostomatidae) native to Argentina [PDF]
, 2013 Male meiosis behaviour and heterochromatin characterization of three big water bug species were studied. Belostoma dentatum (Mayr, 1863), B. elongatum Montandon, 1908 and B. gestroi Montandon, 1903 possess 2n = 26 + X1X2Y (male).
Bressa, Maria Jose +2 more
core +2 more sources
Sex Differences in Drosophila melanogaster Heterochromatin Are Regulated by Non-Sex Specific Factors. [PDF]
PLoS ONE, 2015 The eukaryotic genome is assembled into distinct types of chromatin. Gene-rich euchromatin has active chromatin marks, while heterochromatin is gene-poor and enriched for silencing marks.
Manasi S Apte, Victoria H Meller
doaj +1 more source
The catalytic core of DEMETER guides active DNA demethylation in Arabidopsis. [PDF]
, 2019 The Arabidopsis DEMETER (DME) DNA glycosylase demethylates the maternal genome in the central cell prior to fertilization and is essential for seed viability.
Aravind, L. +15 more
core +2 more sources
Ccq1–Raf2 interaction mediates CLRC recruitment to establish heterochromatin at telomeres
Life Science Alliance, 2021 This study unveils a role of Ccq1–Raf2 interaction in CLRC recruitment to establish heterochromatin at telomeres, providing a positive feedback mechanism between shelterin and CLRC for subtelomeric heterochromatin assembly.
Shaohua Shi +6 more
doaj +1 more source
A simulation model of heterochromatin formation at submolecular detail
iScience, 2022 Summary: Heterochromatin is a physical state of the chromatin fiber that maintains gene repression during cell development. Although evidence exists on molecular mechanisms involved in heterochromatin formation, a detailed structural mechanism of ...
Michael R. Williams +3 more
doaj +1 more source
Nature Communications, 2021 The heterochromatin compartment is key for genome stability and cell fate transitions. Here, by tracking the heterochromatin response to UV damage in real time, the authors reveal how heterochromatin features are preserved following a genotoxic stress ...
Anna Fortuny +6 more
doaj +1 more source
Accessibility of promoter DNA is not the primary determinant of chromatin-mediated gene regulation [PDF]
, 2019 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
Early-replicating heterochromatin [PDF]
Genes & Development, 2003 Euchromatin, which has an open structure and is frequently transcribed, tends to replicate in early S phase. Heterochromatin, which is more condensed and rarely transcribed, usually replicates in late S phase. Here, we report significant deviation from this correlation in the fission yeast,Schizosaccharomyces pombe.
Soo-Mi, Kim +2 more
openaire +2 more sources
Assessing the Epigenetic Status of Human Telomeres [PDF]
, 2019 The epigenetic modifications of human telomeres play a relevant role in telomere functions and cell proliferation. Therefore, their study is becoming an issue of major interest.
Vaquero Sedas, María Isabel +1 more
core +1 more source
Detection of chromosome aberrations in the human interphase nucleus by visualization of specific target DNAs with radioactive and non-radioactive in situ hybridization techniques: diagnosis of trisomy 18 with probe L1.84 [PDF]
, 1986 The localization of chromosome 18 in human interphase nuclei is demonstrated by use of radioactive and nonradioactive in situ hybridization techniques with a DNA clone designated L1.84.
A. Brückner +33 more
core +1 more source