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Posts by Pablo Alcón

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🕛🕔🕗 Heads up! Fragile Nucleosome Seminar is at a special time this week: 2pm US West / 5pm US East / 10pm UK / 6am Tokyo / 7am Melbourne

We'll have outstanding talks on chromatin from Shabih Shakeel and @kazu-maeshima.bsky.social !!!

register here: us06web.zoom.us/webinar/regi...

1 day ago 14 8 0 1
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Our H1 paper is out #ScienceAdvances:
www.science.org/doi/10.1126/...
@masaashimazoe.bsky.social et al. reveal that linker histone H1 acts as a liquid-like glue to organize chromatin in live cells. 🎉 Fantastic collab with @rcollepardo.bsky.social @janhuemar.bsky.social and others—huge thanks! 🙌 1/

1 week ago 60 29 2 4
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Postdoc positions in Nuclear RNA Biology - Vacancy at Aarhus University Vacancy at Department of Molecular Biology and Genetics - RNA Biology and Innovation, Aarhus University

2nd call for postdoc positions in the lab. Get in touch for more information or simply apply here: mbg.au.dk/en/news-and-...

1 week ago 11 13 0 0

Wake up, kids
We got the dreamers disease.

‘Radical’ comes from a Latin word meaning "root."

Because roots are the deepest part of a plant, ‘radical’ came to describe things understood as fundamental or essential.

‘Radical change’ was a change at the root of a system.

1 week ago 1663 467 26 45

Germ cells have their own versions of core transcription factors and fertility depends on them.
We're hiring a PhD student to figure out how! 📢
Fly genetics + proteomics + genomics. Fully funded.
Aarhus University 🇩🇰
Deadline May 1 👇

Please share with anyone who might be interested!

2 weeks ago 33 41 0 4
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Check out our first lab preprint: A real team effort to understand the Plasmodium GAPM proteins, which form part of a essential bridge between the parasite's cytoskeleton and motility apparatus. Below is a sneak peek of some beautiful microscopy - light and electron! www.biorxiv.org/content/10.6...

3 weeks ago 70 25 3 4
cryoEM maps of the different assemblies

cryoEM maps of the different assemblies

New preprint

www.biorxiv.org/content/10.6...

A stepwise mechanism for RAF1 activation involving novel assemblies exclusive of HSP90 RAF clients influencing MAPK signaling. Great collaboration between our group and the groups of @jespervolsen.bsky.social and M. Barbacid @cniostopcancer.bsky.social

3 weeks ago 10 3 0 0

Awesome work. Congratulations Hongmiao!

3 weeks ago 2 0 0 0

Excited to share my postdoc work on the cryo‑EM structure of the budding yeast telomerase holoenzyme! 🧫🧬
It’s been a real privilege to be part of the awesome Kelly Lab @kellythd-nguyen.bsky.social. Grateful as well to the incredible facilities @mrclmb.ac.uk.

3 weeks ago 46 10 3 1
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Proud to share the yeast telomerase structure, led by the talented @hongmiaohu.bsky.social in collaboration with the Wellinger and Chartrand labs. Discovered 37 years ago and took us nearly 7 years but totally worth the wait 😍.
www.science.org/doi/10.1126/...
www.youtube.com/watch?v=gFE4...

3 weeks ago 203 74 9 2
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Structural basis of supercoiling-induced CRISPR–Cas9 off-target activity - Nature Cas9 structures explain topology sensing and off-target activation.

1/11 In our story out today in @nature.com , we showcase the molecular mechanisms that enable Cas9 to bind and cleave negatively supercoiled ((-)SC) off-targets! 🧬🧵

🔗 www.nature.com/articles/s41...

#CRISPR #Cas9 #DNATopology #AFM #CryoEM #SingleMolecule #Biophysics

3 weeks ago 60 20 2 4

This is such a cool story! I cannot stop looking at the structure with the minicircle.

💍

Congratulations Quentin and all authors!

3 weeks ago 1 1 1 0
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DNA shape explains crucial gene-therapy challenges CRISPR is a powerful DNA-editing tool that has underpinned huge advancements in human healthcare in the last decade. It is a precision tool, but is not perfect, and misplaced DNA edits can compromise ...

New research in Nature shows that the physical twisting of DNA plays an important role in DNA editing mistakes made by CRISPR.

Using nanometer-sized circles of DNA, scientists captured never-before-seen interactions between CRISPR & DNA, providing insights that could eradicate errors altogether.

3 weeks ago 12 3 1 0
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📣 Physicists and engineers: apply your experimental skills to biology! Join the group of Katerina Naydenova @imprs-lm.bsky.social for a #PhD to develop new technologies that enable answering fundamental biological questions. Apply NOW!

1 month ago 10 11 0 1
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Excited to share our work on the structure and function of cytoplasmic lattices within mouse embryos. A collaborative effort with @niakanlab.bsky.social and work led by @kashishsingh.bsky.social and @inaharasimov.bsky.social . It is now out on BioRxiv: www.biorxiv.org/content/10.6...

4 weeks ago 190 77 6 9
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1) The Herzik lab is excited to announce our newest preprint in collaboration with the Grotjahn lab! We have developed a surfactant cocktail that seeks to overcome one of the more nefarious problems in #cryoEM, Air-water interface (AWI)-induced damage and preferred orientation (PO).

4 weeks ago 92 44 4 3
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Dave Grohl in the Guardian casually casting shade on thousands of academics

www.theguardian.com/music/2026/m...

1 month ago 27 4 2 2
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Group picture of the lab members

Group picture of the lab members

With the new year, we have welcomed several new members to our lab, so it is a perfect time to update our group picture.

🔬🧬

1 month ago 8 0 0 0

Myself and @immunoah.bsky.social are looking to hire a postdoctoral scientist to build a next-generation high-throughput high-resolution light sheet microscope for imaging entire cleared organs/tissues and to further develop live & fixed tissue clearing methods.

www.nature.com/naturecareer...

1 month ago 20 16 0 0
Sfeir Lab The official website of the Sfeir Lab at the Skirball Institute of Biomolecular Medicine of New York University Langone Medical Center.

The Sfeir Lab at MSKCC is hiring a Research Assistant!
We are looking for a motivated scientist with at least 2 years of research experience and a two-year commitment. Learn more about our work here www.sfeirlab.com, and message me your CV and cover letter if interested

1 month ago 7 8 1 1
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Riki Blanco: ilusión Viñeta del 28 de febrero de 2026

elpais.com/opinion/2026...

1 month ago 0 0 0 0
Oxygen depletion in biomolecular condensates is dominated by macromolecular density - Nature Communications Biomolecules can control biochemical reactions via droplets of macromolecules known as condensates. Here, it is shown that oxygen is partially excluded from such condensates due to the high concentrat...

🚨New paper: We found - contrary to expectations - that oxygen is partially excluded from biomolecular condensates.

We find a strong anti-correlation between oxygen and protein concentrations in the condensate showing that accessible volume dominates over polarity.

www.nature.com/articles/s41...

2 months ago 24 7 1 2
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Éxito inicial de una vacuna personalizada contra el cáncer de mama triple negativo, el más agresivo Un ensayo en pacientes muestra resultados prometedores contra estos tumores. Los responsables esperan tener una vacuna aprobada en cuatro años

elpais.com/ciencia/2026...

2 months ago 1 0 0 0
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The campus at @au.dk is very pretty, also in the snow

2 months ago 19 2 1 0
Research Group Leader Tenure Track - Structural Studies - LMB 2775 - Medical Research Council Location: Cambridge. Vacancy: Research Group Leader Tenure Track - Structural Studies - LMB 2775. Closing Date: 16/03/2026, 23:55

Please spread the word: the Structural Studies Division @mrclmb.bsky.social is looking for a new tenure-track, independent group leader with an exciting plan in any area of Structural (Molecular & Cell) biology, in discovery biology and/or methods development. 🥳

mrc.tal.net/vx/mobile-0/...

2 months ago 83 106 1 3

It took a while but it’s finally published!

The GAP activity of SEAC (GATOR) is a metabolic switch that allows cells to quickly respond to changes in amino acid levels, both for inhibition and reactivation.

2 months ago 11 7 0 1
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A small polymerase ribozyme that can synthesize itself and its complementary strand The emergence of a chemical system capable of self-replication and evolution is a critical event in the origin of life. RNA polymerase ribozymes can replicate RNA, but their large size and structural ...

How could a simple self-replicating system emerge at the origins of life? RNA polymerase ribozymes can replicate RNA, but existing ones are so large that their self-replication seems impossible. Could they be smaller?

Excited to share our latest work in @science.org on a new small polymerase.
1/n

2 months ago 500 210 10 28

A beautifully crafted summary of the extraordinary discovery in the lab of my @mrclmb.bsky.social colleague @philholliger.bsky.social of a tiny RNA that can replicate RNA.

2 months ago 18 9 0 0
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STIM1-containing contact sites promote direct calcium flux from the endoplasmic reticulum to mitochondria - The EMBO Journal STIM1 is a transmembrane protein localized in the endoplasmic reticulum (ER), where it acts as a calcium ion sensor, activating store-operated Ca2+ entry upon ER Ca2+ depletion. Via cellular calcium i...

We’re excited to share our latest EMBO Journal paper! We show that STIM1 localizes to ER-mitochondria contact sites to promote direct Ca²⁺ flux into mitochondria, supporting mitochondrial Ca²⁺ homeostasis, respiration, and energy production
link.springer.com/article/10.1...

2 months ago 5 3 1 1

Very happy to say that our work on how axonemes are generated is now available on bioRxiv: www.biorxiv.org/content/10.6... - if you’ve ever wondered how the incredibly beautiful, complex structures within motile #cilia are constructed then this is for you!

2 months ago 85 29 8 3