Histone monoubiquitylation position determines specificity and direction of enzymatic cross-talk with histone methyltransferases Dot1L and PRC2
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Histone acetyl transferases (HATs) play a crucial role in eukaryotes by regulating chromatin architecture and locus-specific transcription. The GCN5 HAT was identified as a subunit of the SAGA (Spt-Ada-Gcn5-Acetyltransferase) multiprotein complex. Vertebra ...
KAP1 is an essential cofactor of KRAB-zinc finger proteins, a family of vertebrate-specific epigenetic repressors of largely unknown functions encoded in the hundreds by the mouse and human genomes. Here, we report that KAP1 is expressed at high levels and ...
In this study we used nuclear extracts from centrifugally elutriated cell populations to study histone H1 transcriptional regulation during the cell cycle. Analysis of mutations within the H1 promoter establish that both of the H1 subtype-specific consensu ...
One of the central questions in eukaryotic transcription is how activators can transmit their signal to stimulate gene expression in the context of chromatin. The multisubunit SAGA coactivator complex has both histone acetyltransferase and deubiquitination ...
53BP1, the vertebrate ortholog of the budding yeast Rad9 and fission yeast Crb2/Rhp9 checkpoint proteins, is recruited rapidly to sites of DNA double-strand breaks (DSBs). A tandem tudor domain in human 53BP1 that recognizes methylated residues in the hist ...
Linear simian virus 40 (SV40) chromosomes were prepared by Eco R1 nuclease cleavage of the circular SV40 chromosomes released from virions with dithiothreitol at pH 9,8. Chromatin-DNA hybrids were constructed with segments of 3H-labeled, naked SV40 DNA cov ...
The single molecule of DNA that constitutes a eukaryotic chromosome begins and ends with a stretch of repetitive DNA known as a telomere. These sequences appear to be necessary to preserve the integrity of the genetic material through the cell cycle.Telome ...
Multiprotein bridging factor (MBF-1) is a cofactor that was first described for its capacity to modulate the activity of fushi tarazu factor 1, a nuclear receptor originally implicated in Drosophila development. Recently, it has been shown that human MBF-1 ...
Yeast chromosomes may lack the linker histone H1 (normally required to compact 10 nm beads-on-a-string fiber into the 30 nm fiber) and there is no cytological evidence for higher order fiber structure but they do contain regions which correspond to euchrom ...
