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Chilean-German researchers show impressive effects on the marine ecosystem. Since several decades, plastics dominate many product and packaging sectors. Unfortunately, more and more of these very durable products are polluting our oceans. Due to the drift with ocean currents they reach the remotest areas of our planet. There, the litter is ingested by many marine organisms as impressive images of a scientific study show which have now been published in the scientific journal Frontiers in Marine Science.

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DNA is wrapped around proteins called histones, which serve to package the DNA inside the cell nucleus. The basic unit of DNA packaging is the nucleosome, which is made up of eight histone proteins with DNA wrapped around them.

The assembly of DNA and histone proteins is Gay dating bonn Flirt hannover kostenlos chromatin.

Interactions of these molecules are essential for important processes like transcription, replication and DNA repair to take place. Understanding the location and nature of these interactions is therefore of significant interest for understanding the regulatory networks of these important cellular processes.

The quantitative technique works by exposing short sequences of DNA oligonucleotides to nuclear extracts. In addition, they performed similar experiments using nucleosome complexes containing modified and unmodified histones as bait. As histone modifications can change chromatin structure and lead to changes in gene expression, this use of the technique allows the identification of biologically relevant interactions under different conditions.

For example, the Histone 3 protein can be modified by acetyl groups on lysine residues 9 and 14 H3K9AcK14Aca form of histone modification linked to active gene transcription. The technique that we have developed now allows us to quantify binding events such as the interaction of nucleosome remodelling complexes with nucleosomes depending on the modifications that these are decorated with. Not only is the technique capable of revealing such novel observations, but it can do so on a large-scale; determining affinity measures for tens to hundreds of nuclear proteins simultaneously.

This technique is thus novel in its revelation of the proteome-wide binding landscape of proteins that recognise particular DNA sequences or nucleosome states. Further Information Original Publication: Global profiling of protein-DNA and protein-nucleosome binding affinities using quantitative mass spectroscopy.

To achieve this, it investigates the interaction of genetics, environmental factors and lifestyle. The focus Uk singles chart april 2014 best online dating in chennai on the so-called "histone proteins" on which the DNA strands are wound and which can determine whether a gene can be read or not.

In addition, the scientists are examining the connections between common diseases and distortions in DNA packing. Cutting edge methods have enabled them to follow changes of these processes even in individual cells.

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Novel technique allows comprehensive analysis of protein/DNA binding

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