Novel histone modifications couple metabolism to gene activity

Scientists of Helmholtz Zentrum München and Ludwig-Maximilians-Universität Munich (LMU) have discovered that two new classes of histone modifications couple cellular metabolism to gene activity. The study was published ...

Key factor identified in gene silencing

A fertilized human egg develops into multiple tissues, organs and about 200 distinct cell types. Each cell type has the same genes, but they are expressed differently during development and in mature cells.

'Acidic patch' regulates access to genetic information

Chromatin remodelers—protein machines that pack and unpack chromatin, the tightly wound DNA-protein complex in cell nuclei—are essential and powerful regulators for critical cellular processes, such as replication, recombination ...

Origins of DNA folding suggested in archaea

In the cells of palm trees, humans, and some single-celled microorganisms, DNA gets bent the same way. Now, by studying the 3-D structure of proteins bound to DNA in microbes called Archaea, University of Colorado Boulder ...

Packaging and unpacking of the genome

DNA represents a dynamic form of information, balancing efficient storage and access requirements. Packaging approximately 1.8m of DNA into something as small as a cell nucleus is no mean feat, but unpacking it again to access ...

DNA 'spool' modification affects aging and longevity

Research on a modified protein around which DNA is wrapped sheds light on how gene regulation is linked to aging and longevity in nematodes, fruit flies and possibly humans.

A first of its kind tool to study the histone code

University of North Carolina scientists have created a new research tool, based on the fruit fly, to help crack the histone code. This research tool can be used to better understand the function of histone proteins, which ...

Protein anchors help keep embryonic development 'just right'

The "Goldilocks effect" in fruit fly embryos may be more intricate than previously thought. It's been known that specific proteins, called histones, must exist within a certain range—if there are too few, a fruit fly's ...

Environmental change leaves its footprint in the epigenome

(Phys.org) —Monozygotic twins look more similar when they are young than later in life. One of the reasons for this is epigenetic change in the form of chemical modifications of the DNA or its packaging proteins. Environmental ...

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