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Andrea Musacchio

@andrea-musacchio

Director, Dept. of Mechanistic Cell Biology, Max Planck Institute of Molecular Physiology, Dortmund (DE). Opinions my own

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Latest posts by Andrea Musacchio @andrea-musacchio

Opportunities! Four PhD positions focusing on "Synthetic cells (SynCells) as a smart-responsive healthcare technology"

at Imperial College London

09.03.2026 08:57 πŸ‘ 0 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0

Do you work on DNA or RNA protein complexes? 🧬

Come to Machines on Genes this June in Crete! β˜€οΈ

Super early discount is ending this Sunday so register now! πŸ˜ƒ

02.03.2026 22:08 πŸ‘ 22 πŸ” 14 πŸ’¬ 0 πŸ“Œ 0

Interesting point. I suppose a precondition for the rule to work is that there is sufficient chemical β€œorthogonality” to make different phases coexist, which I doubt applies to a cell.

02.03.2026 15:49 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Please elaborate if possible

28.02.2026 06:15 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

My answer:

xtallization in vitro can't predict xtallization in cells as:

1) The crystallising object is different in cells (binding, PTMs, etc.)

2) Cytosol and crystallisation buffer are distinct solvents

For precisely the same reasons, LLPS in this assay does not predict LLPS in vivo

27.02.2026 17:14 πŸ‘ 5 πŸ” 1 πŸ’¬ 1 πŸ“Œ 0

πŸ˜‚ ok but at least to dismiss the threat of a new alternative religion like the liquid-solid phase transition predicted by in vitro crystallization some arguments are required!

21.02.2026 10:15 πŸ‘ 2 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0

I am curious to see if answers come up

21.02.2026 10:08 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Beautiful indeed! (But not ours though!)

21.02.2026 10:06 πŸ‘ 0 πŸ” 0 πŸ’¬ 2 πŸ“Œ 0
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If I claimed this liquid-to-solid phase transition assay on a pure protein in vitro predicts the same transition to happen in cells, what counterarguments would you raise?

Would the same counterarguments apply to a liquid-to-liquid phase transition assay on the same pure protein in vitro?

21.02.2026 07:56 πŸ‘ 16 πŸ” 3 πŸ’¬ 1 πŸ“Œ 1
Scaling back DEI programmes and the loss of scientific talent Nature Cell Biology - Programmes that support diversity, equity and inclusion (DEI) in science are under attack in the USA. Data indicate that diversity in the scientific workforce increases...

@joann-trejo.bsky.social, @marymunson4.bsky.social and I have a commentary in @natcellbio.nature.com on recent attacks on DEI in biomedical research: "If scientific research, especially biomedical research, is meant to serve everyone, then it requires that everyone has an opportunity to participate"

23.10.2025 16:36 πŸ‘ 269 πŸ” 172 πŸ’¬ 6 πŸ“Œ 25
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Ancient co-option of LTR retrotransposons as yeast centromeres - Nature Evolutionarily related β€˜proto-point’ centromeres providing resolution to the evolutionary origins of point centromeres are identified in yeast, and comparison shows they evolved in an ancestor with re...

Our paper is now out in Nature:

β€œAncient co-option of LTR retrotransposons as yeast centromeres”

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

A short thread on how retrotransposons helped give rise to yeast point centromeres.

1/14

18.02.2026 16:03 πŸ‘ 228 πŸ” 115 πŸ’¬ 8 πŸ“Œ 10

Re-gain of function (synthetic viability from mixing perturbations) may result from removing two different parts of a sequence. Very hard to make conclusions on "chemistry" without a detailed mechanism in my view.

18.02.2026 15:45 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Thank you for these comments. The IDRs of Abf1 works next to DNA-binding domains. Their local concentration is very high. Motifs may be very short, and the IDR may have coexisting activation and repressive functions that may lead to unexpected phenotypes (including dominant effects).

18.02.2026 15:45 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Something of general value, however:

Homotypic phase separation of IDRs is so implausible that it can only be a fantasy.

This fantasy has distracted both the science community and the publication system from supporting real progress in molecular biology

18.02.2026 14:50 πŸ‘ 3 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

3/ The reason? There is no intrinsic sequence grammar independent of specific function and binding partners! Many different mechanistic models may explain the data.

Why does it matters? Because the hardest part of the job is to unravel the molecular mechanism that explains the observations...

18.02.2026 14:50 πŸ‘ 2 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

2/ I tend to disagree. The study addresses correlations between the sequence variants of IDR2 of Abf1 and viability.

In my view, without a detailed mechanistic model, mutations cannot be understood and claimed to support a general principle...

18.02.2026 14:50 πŸ‘ 2 πŸ” 0 πŸ’¬ 2 πŸ“Œ 0

1/ This is a nice and thorough study that "does not strongly support a homotypic phase-separation-based model" and supports sequence and "chemically specific interactions" for IDRs.

On the conceptual level, the title suggests general mechanistic conclusions can be inferred...

18.02.2026 14:50 πŸ‘ 4 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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Structural biologist Alexey Amunts launches new research lab in Shenzhen β€˜Shenzhen adds another dimension; it is a place where ideas do not remain ideas for long,’ Amunts says of new position.

We're launching a research lab at SMART. Shenzhen Medical Academy for Research and Translation is a newly established institute with long-term funding mechanisms for internal and external investigators. At full capacity SMART aims to support up to 400 labs.
www.scmp.com/news/china/s...

06.02.2026 05:33 πŸ‘ 71 πŸ” 19 πŸ’¬ 2 πŸ“Œ 2

The second paper is related to

link.springer.com/article/10.1...

and

link.springer.com/article/10.1...

and is accompanied by this nice commentary

link.springer.com/article/10.1...

by Monica Gobran and @plenart.bsky.social and

02.02.2026 16:18 πŸ‘ 6 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0

Two new papers from the lab published in The EMBO Journal!

link.springer.com/article/10.1...
By Kai Walstein, @louisa-hill.bsky.social and others – On role of M18BP1 in CENP-A loading

link.springer.com/article/10.1...
By Arianna Esposito Verza and others – On mechanism of activation of PLK1

02.02.2026 16:18 πŸ‘ 39 πŸ” 15 πŸ’¬ 1 πŸ“Œ 0
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Mitotic entry: Bora takes Polo to Aurora, and gives them a hug - The EMBO Journal The EMBO Journal - Cell division involves the complete reorganization of the cellular architecture, requiring precise coordination of cellular processes in space and time, but how does this control...

See also the great News&Views comment by Monica Gobran and @plenart.bsky.social - highlighting all three papers!
link.springer.com/article/10.1...

28.01.2026 14:48 πŸ‘ 16 πŸ” 12 πŸ’¬ 1 πŸ“Œ 0
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Molecular requirements for PLK1 activation by T-loop phosphorylation - The EMBO Journal Activation of PLK1, a master mitotic kinase, requires phosphorylation of its activation segment on Thr210, within a basic consensus sequence for Aurora kinases. Aurora B-dependent phosphorylation of T...

Additional complementary evidence

by Arianna Esposito Verza, @andrea-musacchio.bsky.social et al
link.springer.com/article/10.1...

and by Anais Pillan, Lionel Pintard @ccdlab.bsky.social et al
link.springer.com/article/10.1...

in our sister journal @embojournal.org

28.01.2026 15:53 πŸ‘ 13 πŸ” 6 πŸ’¬ 0 πŸ“Œ 0
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Molecular requirements for PLK1 activation by T-loop phosphorylation - The EMBO Journal Activation of PLK1, a master mitotic kinase, requires phosphorylation of its activation segment on Thr210, within a basic consensus sequence for Aurora kinases. Aurora B-dependent phosphorylation of T...

Arianna Esposito Verza, @andrea-musacchio.bsky.social et al describe the long-sought-after mechanism of Bora dependency of PLK1 activation by Aurora A kinase during mitotic entry
Another #RefereedPreprint β„… @reviewcommons.org
link.springer.com/article/10.1...

28.01.2026 14:42 πŸ‘ 19 πŸ” 9 πŸ’¬ 1 πŸ“Œ 0
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AlphaFold protein interaction modeling tutorial and workshop - the Node This video is the culmination of several years attempting to: (1) Figure out best practices for modeling protein-protein interactions; (2) Understand the This video is the culmination of several years...

AlphaFold protein interaction modeling tutorial and workshop thenode.biologists.com/https-www-yo...

18.01.2026 16:36 πŸ‘ 36 πŸ” 10 πŸ’¬ 0 πŸ“Œ 0

Daziofrenici

17.01.2026 18:11 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Alessandro Costa @costalaboratory.bsky.social, Dana Branzei and myself are co-organising the 2026 Machines on Genes meeting in beautiful Crete as the 94th Harden Conference hosted by @biochemsoc.bsky.social

Register now - lots of opportunities for selected talks www.eventsforce.net/biochemsoc/f...

05.01.2026 16:52 πŸ‘ 38 πŸ” 17 πŸ’¬ 1 πŸ“Œ 3
CUL4A-DDB1-DCAF10 is an N-recognin for N-terminally acetylated Src kinases - Nature Communications Cells depend on early protein modifications for proper function. Here, the authors show that when Src-family signaling kinases lack their typical myristoylation, an alternative acetylated start is det...

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

05.01.2026 13:36 πŸ‘ 14 πŸ” 3 πŸ’¬ 0 πŸ“Œ 0

Se Berlusconi appartiene alla categoria β€œliberali italiani”…

02.01.2026 20:59 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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He is neither an aide nor a diplomat, yet Giuliano da Empoli's books have in recent years become some of the most fashionable reading for those in Europe’s halls of power.

πŸ”— politi.co/4pREopi

(This story was first published in September.)

01.01.2026 13:11 πŸ‘ 16 πŸ” 5 πŸ’¬ 0 πŸ“Œ 1
40 years of CENP-A In 1985, Earnshaw and Rothfield published in Chromosoma a landmark discovery of the centromere-specific protein CENP-A. Subsequent research has shown that ...

The discovery of the first kinetochore proteins (CENP-A, CENP-B, CENP-C) was reported by Bill Earnshaw and Naomi Rothfield in 1985 in Chromosoma. Forty years later, Chromosoma/Chromosome Research has published a special issue (most articles are open access)
link.springer.com/collections/...

22.12.2025 10:09 πŸ‘ 42 πŸ” 17 πŸ’¬ 2 πŸ“Œ 0