Research Area D - Publications 2017

Scientific Reports, 7, Article number: 1684, doi:10.1038/s41598-017-01943-6
Scientific Reports, online article

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The bromodomain protein Brd4 is an epigenetic reader and plays a critical role in the development and maintenance of leukemia. Brd4 binds to acetylated histone tails and activates transcription by recruiting the positive elongation factor P-TEFb. Small molecule inhibitor JQ1 competitively binds the bromodomains of Brd4 and displaces the protein from acetylated ...

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Scientific Reports, 7, Article number: 1388, doi:10.1038/s41598-017-01410-2
Scientific Reports, online article

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Two-component systems are crucial for signal perception and modulation of bacterial behavior. Nevertheless, to date, very few ligands have been identified that directly interact with histidine kinases. The histidine kinase/response regulator system YehU/YehT of Escherichia coli is part of a nutrient-sensing network. Here we demonstrate that this system senses the ...

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PNAS, vol. 114 no. 20,  E3944-E3953, doi: 10.1073/pnas.1700128114
PNAS, online article

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The carboxyl-terminal domain (CTD) of the largest subunit of RNA polymerase II (Pol II) orchestrates dynamic recruitment of specific cellular machines during different stages of transcription. Signature phosphorylation patterns of Y1S2P3T4S5P6S7 heptapeptide repeats of the CTD engage specific “readers.” Whereas phospho-Ser5 and phospho-Ser2 marks are ubiquitous, ...

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Scientific Reports, 7, Article number: 1051, doi:10.1038/s41598-017-01031-9
Scientific Reports, online article

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The transmembrane DNA-binding protein CadC of E. coli, a representative of the ToxR-like receptor family, combines input and effector domains for signal sensing and transcriptional activation, respectively, in a single protein, thus representing one of the simplest signalling systems. At acidic pH in a lysine-rich environment, CadC activates the transcription of ...

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Front. Microbiol., Volume 8, Article 634, doi: 10.3389/fmicb.2017.00634
Front. Microbiol., online article

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Quorum sensing (QS) is a process enabling a bacterial population to communicate via small molecules called autoinducers (AIs). This intercellular communication process allows single cells to synchronize their behavior within a population. The marine bacterium Vibrio harveyi ATCC BAA-1116 channels the information of three AI signals into one QS cascade. Three ...

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Nature Structural & Molecular Biology, 24, 341–343, doi:10.1038/nsmb.3394
Nature Structural & Molecular Biology, online article

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Chromatin-remodeling enzymes perform the formidable task of reorganizing the structure of a stable macromolecular assembly, the nucleosome. Recently published work demonstrates that the SNF2H chromatin remodeler distorts the histone octamer structure upon binding to the nucleosome, then taps into this induced plasticity to productively achieve nucleosome sliding.
 

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Molecular Plant, Volume 10, Issue 4, p575–589, http://dx.doi.org/10.1016/j.molp.2016.12.012
Molecular Plant, online article

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The translocon on the outer membrane of mitochondria (TOM) facilitates the import of nuclear-encoded proteins. The principal machinery of mitochondrial protein transport seems conserved in eukaryotes; however, divergence in the composition and structure of TOM components has been observed between mammals, yeast, and plants. TOM9, the plant homolog of yeast Tom22, ...

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Nature Chemical Biology, doi:10.1038/nchembio.2282
Nature Chemical Biology, online article

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Protein lysine methyltransferases (PKMTs) regulate diverse physiological processes including transcription and the maintenance of genomic integrity. Genetic studies suggest that the PKMTs SUV420H1 and SUV420H2 facilitate proficient nonhomologous end-joining (NHEJ)-directed DNA repair by catalyzing the di- and trimethylation (me2 and me3, respectively) of lysine ...

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Molecular Microbiology, 104(1), 16–31 , doi:10.1111/mmi.13597
Molecular Microbiology, online article

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BceRS and PsdRS are paralogous two-component systems in Bacillus subtilis controlling the response to antimicrobial peptides. In the presence of extracellular bacitracin and nisin, respectively, the two response regulators (RRs) bind their target promoters, PbceA or PpsdA, resulting in a strong up-regulation of target gene expression and ultimately antibiotic ...

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