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Structural and functional characterisation of human RNA helicase DHX8 provides insights into the mechanism of RNA-stimulated ADP release.
(PORTLAND PRESS LTD, 2019-09-13)
DHX8 is a crucial DEAH-box RNA helicase involved in splicing and required for the release of mature mRNA from the spliceosome. Here, we report the biochemical characterisation of full-length human DHX8 and the catalytically ...
Privileged Structures and Polypharmacology within and between Protein Families.
(AMER CHEMICAL SOC, 2018-12-13)
Polypharmacology is often a key contributor to the efficacy of a drug, but is also a potential risk. We investigated two hits discovered via a cell-based phenotypic screen, the CDK9 inhibitor CCT250006 (1) and the pirin ...
Exploiting evolutionary steering to induce collateral drug sensitivity in cancer.
(NATURE PORTFOLIO, 2020-04-21)
Drug resistance mediated by clonal evolution is arguably the biggest problem in cancer therapy today. However, evolving resistance to one drug may come at a cost of decreased fecundity or increased sensitivity to another ...
Human Condensin I and II Drive Extensive ATP-Dependent Compaction of Nucleosome-Bound DNA.
(CELL PRESS, 2020-07-02)
Structural maintenance of chromosomes (SMC) complexes are essential for genome organization from bacteria to humans, but their mechanisms of action remain poorly understood. Here, we characterize human SMC complexes condensin ...
Architecture of the chromatin remodeler RSC and insights into its nucleosome engagement.
(ELIFE SCIENCES PUBLICATIONS LTD, 2019-12-30)
Eukaryotic DNA is packaged into nucleosome arrays, which are repositioned by chromatin remodeling complexes to control DNA accessibility. The Saccharomyces cerevisiae RSC (Remodeling the Structure of Chromatin) complex, a ...
New tricks for an old dog: Brf2-dependent RNA Polymerase III transcription in oxidative stress and cancer.
(TAYLOR & FRANCIS INC, 2018-01-01)
Here, we discuss the role of Brf2, an RNA Polymerase III core transcription factor, as a master switch of the oxidative stress response. We highlight the interplay of Brf2 with the Nrf2/Keap1 pathway, as well as the role ...
RNA polymerase I, bending the rules?
(WILEY, 2017-09-15)
Transcription initiation is one of the key regulatory steps in expressing the genetic information encoded in the DNA. Mechanisms of RNA Pol II transcription have been extensively studied, whereas the structural basis of ...
Structural basis of RNA polymerase III transcription initiation.
(NATURE PORTFOLIO, 2018-01-17)
RNA polymerase (Pol) III transcribes essential non-coding RNAs, including the entire pool of transfer RNAs, the 5S ribosomal RNA and the U6 spliceosomal RNA, and is often deregulated in cancer cells. The initiation of gene ...
RavN is a member of a previously unrecognized group of Legionella pneumophila E3 ubiquitin ligases.
(PUBLIC LIBRARY SCIENCE, 2018-02-01)
The eukaryotic ubiquitylation machinery catalyzes the covalent attachment of the small protein modifier ubiquitin to cellular target proteins in order to alter their fate. Microbial pathogens exploit this post-translational ...
Three-dimensional structure of the basketweave Z-band in midshipman fish sonic muscle.
(NATL ACAD SCIENCES, 2019-07-30)
Striated muscle enables movement in all animals by the contraction of myriads of sarcomeres joined end to end by the Z-bands. The contraction is due to tension generated in each sarcomere between overlapping arrays of actin ...