Tag: molecular-cellular
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Old proteins, new tricks
In order to switch genes on and off, chromatin has to be opened and shut, enabling the DNA to become open to the whim of the rest of the nucleus for transcription. This is called chromatin remodelling, and it’s far from an easy task because our DNA is wrapped around huge protein complexes called nucleosomes.…
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In Conversation With… Reinhard Stöger
For the first instalment of the In Conversation With… series, I sat down with Reinhard Stöger, who runs a laboratory at the University of Nottingham, UK and is a member of the Epigenetics Society Board. Really good to speak with you! Firstly, can you tell me a little bit about your background? Yeah, of course.…
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April-June 2026: Research Roundup
Hey everyone! After some time away, I thought I should start doing quarterly summaries of recent epigenetics news — short and to the point! April: CRISPR gets its latest upgrade CRISPR-Cas9 complexes have been incredibly useful for editing the genome, however they tend to barge in and make edits/cuts regardless of methylation. A new modified…
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Decoding the molecular wiring underlying early development
Schematic of a poised enhancer, its associated modifications, and how it contacts its target gene. Designed in Biorender by me, 2023 (Figure 1B, BSc thesis) In the earliest stages of human development, it’s vital that genes are expressed at very specific times and places. If this goes wrong, developmental defects can arise. Enhancer regions, particularly…
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Chromatin couples are needed to form loops
Guest Blog Series 2026 By Andres Hernandez Maduro Chromosomal DNA strands are long. In each of your body cells, there is approximately two metres worth of DNA packed tightly in a chamber (the nucleus) around five micrometres in diameter. They are also quite sticky, and if thrown into a random soup of molecules will tend…
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A tale of two sequences
Lego bricks join up easily, with each part having a distinct function. Photo by Arto Alanenpää on Wikimedia Commons, under CC BY-SA 4.0. Biology never makes things easy for us. It’s tempting to think of the genome as a well-oiled machine, with separate regions that join neatly together like Lego bricks to perform an overall…
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The vault: 40-year-old cellular mystery one step closer to being solved
A vault particle. Image adapted from Tanaka et al. on Wikimedia Commons under CC BY SA-3.0. In 1986, researcher Nancy Kedersha and her supervisor Leonard Rome sat in the basement of the UCLA Biological Chemistry Department, next to an intimidating electron microscope that towered over the rest of the room. After several days of meticulously…
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DNA repair leaves unexpected scars
Artistic rendition of enzymes repairing a DNA break. Image from Flickr.com, courtesy of Tom Ellenberger, Washington University School of Medicine in St. Louis, and Dave Gohara, Saint Louis University School of Medicine, licensed under CC BY-NC 2.0. Hi again! I hope everyone had a great Christmas period and New Year. After a few weeks off…
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Should we rethink the histone code?
Histone modifications and their conventional notation. From Fig. 1 of Turner, 2005. “Dream of complications / On and on / That’s how my observation tends” – Interpol, “Complications” off their 2018 album, Marauder I was reading a paper earlier and the tiniest thing jumped out at me: the histone modification H3K27me3 written inversely as me3K27H3.…
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The epigenetics of winter
Snow in Finland, 2022. Picture is my own. If you’re in the UK, you’ve probably noticed the turn in the weather we’ve had recently. Half the trees have shed their autumn leaves, forming dark red blankets across the wet pavements, and if you leave the house without a thick coat, you’ll be confronted by the…