Results 41 to 50 of about 452,870 (322)
Modulation of the functional interfaces between retroviral intasomes and the human nucleosome
mBio, 2023 Infection by retroviruses as HIV-1 requires the stable integration of their genome into the host cells. This process needs the formation of integrase (IN)-viral DNA complexes, called intasomes, and their interaction with the target DNA wrapped around ...
E. Mauro +18 more
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The influence of the cylindrical shape of the nucleosomes and H1 defects on properties of chromatin [PDF]
, 2007 We present a model improving the two-angle model for interphase chromatin (E2A model). This model takes into account the cylindrical shape of the histone octamers, the H1 histones in front of the nucleosomes and the vertical distance $d$ between the in and outgoing DNA strands.
arxiv +1 more source
Molecular Biology of the Cell, 2011 Recent advances in our understanding of chromosome behavior have been made possible by the development of cutting-edge cytological and molecular techniques. Presentations in this Minisymposium applied these techniques to a diverse set of topics. Sarah Elgin (Washington University) described her lab’s studies on the 1360 transposable element in ...
Lori L. Wallrath, David M. Gilbert
openaire +3 more sources
Epigenetic Transitions and Knotted Solitons in Stretched Chromatin [PDF]
Scientific Reports, 7, 14642 (2017), 2017 The spreading and regulation of epigenetic marks on chromosomes is crucial to establish and maintain cellular identity. Nonetheless, the dynamical mechanism leading to the establishment and maintenance of a given, cell-line specific, epigenetic pattern is still poorly understood.
arxiv +1 more source
Computing 3D chromatin configurations from contact probability maps by Inverse Brownian Dynamics [PDF]
Biophysical Journal 118, 2193-2208, 2020, 2020 The three-dimensional organization of chromatin, on the length scale of a few genes, is crucial in determining the functional state - accessibility and the amount of gene expression - of the chromatin. Recent advances in chromosome conformation capture experiments provide partial information on the chromatin organization in a cell population, namely ...
arxiv +1 more source
Stem Cells International, 2018 Accumulating evidences indicate that many tumors rely on subpopulations of cancer stem cells (CSCs) with the ability to propagate malignant clones indefinitely and to produce an overt cancer.
Vittoria Poli +2 more
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Genome Biology, 2020 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
doaj +1 more source
Internal modifications in the CENP-A nucleosome modulate centromeric dynamics
Epigenetics & Chromatin, 2017 Background Posttranslational modifications of core histones are correlated with changes in transcriptional status, chromatin fiber folding, and nucleosome dynamics. However, within the centromere-specific histone H3 variant CENP-A, few modifications have
Minh Bui +7 more
doaj +1 more source
FoxO1 signaling in B cell malignancies and its therapeutic targeting
FEBS Letters, EarlyView.FoxO1 has context‐specific tumor suppressor or oncogenic character in myeloid and B cell malignancies. This includes tumor‐promoting properties such as stemness maintenance and DNA damage tolerance in acute leukemias, or regulation of cell proliferation and survival, or migration in mature B cell malignancies.
Krystof Hlavac +3 more
wiley +1 more source
Chromatin: a tunable spring at work inside chromosomes [PDF]
Physical Review E (1 november 2001), 2001 This paper focuses on mechanical aspects of chromatin biological functioning. Within a basic geometric modeling of the chromatin assembly, we give for the first time the complete set of elastic constants (twist and bend persistence lengths, stretch modulus and twist-stretch coupling constant) of the so-called 30-nm chromatin fiber, in terms of DNA ...
arxiv +1 more source