Results 11 to 20 of about 21,822,555 (337)
Live-cell visualisation of chromatin for the study of radiation-induced chromosome aberrations [PDF]
, 2011 This thesis was submitted for the degree of Master of Philosophy and awarded by Brunel University.Chromosomes can be visualised during the metaphase stage of the cell cycle however, there are various limitations associated with the visualisation of ...
Malis, Georgios
core +7 more sources
The Structure of Chromatin [PDF]
Proceedings of the National Academy of Sciences, 1971 The DNA in chromatin of isolated thymus nuclei, and in two different preparations of deoxyribonucleoprotein extracted from chromatin, has been digested with DNase. By variation of the time of reaction and the concentration of enzyme, and by comparison of the action of the enzyme on (protein-free) DNA with its action on DNA complexed with protein in ...
+6 more sources
Structural basis of RNA polymerase II transcription on the chromatosome containing linker histone H1
Nature Communications, 2022 The mechanism by which RNAPII transcribes the DNA in the chromatosome with H1 has remained enigmatic. Here the authors present the cryo-EM structures of the RNAPII-chromatosome complexes, and explain how RNAPII is regulated by H1 in chromatin.
Rina Hirano +6 more
doaj +1 more source
Nucleosome Structures Built from Highly Divergent Histones: Parasites and Giant DNA Viruses
Epigenomes, 2022 In eukaryotes, genomic DNA is bound with histone proteins and packaged into chromatin. The nucleosome, a fundamental unit of chromatin, regulates the accessibility of DNA to enzymes involved in gene regulation.
Shoko Sato +2 more
doaj +1 more source
Structural basis of nucleosomal histone H4 lysine 20 methylation by SET8 methyltransferase
Life Science Alliance, 2021 Cryo-EM structures of the human SET8–nucleosome complexes reveal the mechanism by which the SET8 methyltransferase binds the nucleosome and specifically recognizes the histone H4 lysine-20 residue.
Cheng-Han Ho +5 more
doaj +1 more source
Communications Biology, 2021 Hirano et al. show that the H2A.B-H2B histone dimer incorporated within the nucleosome exchanges with the canonical H2A-H2B dimer without assistance from histone chaperones or nucleosome remodelers.
Rina Hirano +8 more
doaj +1 more source
Structure and Function of ATP-dependent Chromatin Remodeling Complexes
Journal of Molecular Biology, 2021 Chromatin remodelers act to regulate multiple cellular processes, such as transcription and DNA repair, by controlling access to genomic DNA. Four families of chromatin remodelers have been identified in yeast, each with non-redundant roles within the ...
Alexis A Reyes, R. Marcum, Yuan He
semanticscholar +1 more source
The Drug-Induced Interface That Drives HIV-1 Integrase Hypermultimerization and Loss of Function
mBio, 2023 Allosteric HIV-1 integrase (IN) inhibitors (ALLINIs) are an emerging class of small molecules that disrupt viral maturation by inducing the aberrant multimerization of IN. Here, we present cocrystal structures of HIV-1 IN with two potent ALLINIs, namely,
Matthew R. Singer +14 more
doaj +1 more source
Function of the upstream activating factor in chromatin structure organization and transcriptional regulation at the yeast ribosomal DNA [PDF]
, 2010 Chromatin is the template of all processes involved in DNA metabolism in the eukaryotic cell. Accordingly, chromatin is a dynamic structure which changes in its composition and posttranslational modification correlating with the functional state of a ...
Götze, Hannah
core +1 more source