Lars-Anders Carlson

Lars-Anders Carlson

@lacarlson.bsky.social

Structural virology group leader at Umeå University, Sweden. www.carlsonlab.se

1,911 Followers 295 Following 333 Posts Joined Feb 2024
8 hours ago
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Mechanism of co-transcriptional cap snatching by influenza polymerase - Nature Structural and biochemical studies of influenza virus RNA-dependent RNA polymerase (FluPol) in complex with transcribing host RNA polymerase II reveal the molecular mechanisms of RNA cap snatchin...

We just covered this paper in our joint journal club with @maxrenner.bsky.social group. Very impressive! Congrats all authors.
www.nature.com/articles/s41...

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10 hours ago
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New OpenFold3 preview out! (OF3p2)

It closes the gap to AlphaFold3 for most modalities.

Most critically, we're releasing everything, including training sets & configs, making OF3p2 the only current AF3-based model that is functionally trainable & reproducible from scratch🧵1/9

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8 hours ago

Is that the venue for next year? Sounds tempting to go then too!

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1 day ago
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This is Nathan Cavanaugh, another DOGE staffer explaining how he flagged grants at NEH for "DEI" which would be reviewed for termination. 404 Media has reviewed hours of this footage and we'll have more soon.

Part of a lawsuit by @acls1919.bsky.social, @modernlanguage.bsky.social + @historians.org

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16 hours ago

I'll be at GfV (Society for Virology) in Heidelberg next week. Haven't had time to check in with "everyone" who is going, so feel free to reach out if you'll be there and want to meet up. :)

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17 hours ago
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Polymerase trapping as the mechanism of H5 highly pathogenic avian influenza virus genesis Highly pathogenic avian influenza viruses (HPAIVs) derive from H5 and H7 low pathogenic avian influenza viruses (LPAIVs). Although insertion of a furin-cleavable multibasic cleavage site (MBCS) in the...

De novo generation of the furin cleavage site (FCS) in influenza viruses
In SARS-CoV2, the existence of an FCS was a key argument of lab leakers that it must have been constructed in the lab.
Fantastic work

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1 day ago
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Automatic screening of cryo-EM grids using EPU is fast and efficient, but reviewing the generated data & picking the best areas for data collection can be slow and cumbersome. We made a little tool that makes this process more streamlined and enjoyable: github.com/mvorlander/E... 1/4

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1 day ago
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The countdown begins! Less than one week until the 35th Annual Meeting of the Society for Virology is taking place in Heidelberg.

Check the website for all current updates (incl. detailed program): virology-meeting.de

#GfV #GfV2024 #virology #virologymeeting #VirusResearch

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1 day ago

I used this page for fun a few times in the past, it is indeed nice. Thanks for creating it!

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2 days ago
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Remembering Philip E. Bourne Phil was a key figure in launching the RCSB PDB and served as Associate Director from 1998-2013

Remembering Philip E. Bourne
Phil was a key figure in launching the RCSB PDB and served as Associate Director from 1998-2013

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2 days ago

The green light looks cool :)

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3 days ago

The juvenile sea squirt swims the ocean currents, actively searching for the perfect place to live. Once it finds a nice, solid rock, it sticks itself down and gets to work reabsorbing bits it no longer needs - including its own brain.

This post is about human civilisation.

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2 days ago
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The number of cancer deaths worldwide has more than doubled since the 1980s. Does that mean we're losing the fight against cancer? Not necessarily, because it depends on how you measure it. On this chart, you can see three ways to look at the same data. 🧵

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3 days ago
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Hot off the press!

I'm thrilled to share that our paper "Unravelling the Maturation Pathway of a Eukaryotic Virus through Cryo-EM" has been published!

Link to the paper: www.pnas.org/doi/10.1073/...

Nature is full of remarkable protein nanomachines, and now we can watch one more in action.

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4 days ago

When it works, having a cappucino and a Brezel in the bistro at 300 km/h is not bad. When it works....

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4 days ago
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Umeå Centre for Electron Microscopy (UCEM) UCEM is a joint resource for research and higher education in electron microscopy techniques.

Hi Fabio, the facility in Umeå does. You can find info including facility contact here (I am a user but I don't work at the facility):
www.umu.se/en/research/...

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4 days ago

Culex homini lupus!

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5 days ago

"talk to". I cringe every time I find a typo in one of my posts but what can I do...

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5 days ago

Visited @pirbrightinst.bsky.social some days ago. What an incredible density of smart and creative virologists! Thanks especially to Helena Maier who arranged my visit, and to everyone I had a chance to talk. Their no-photo-policy makes this post a bit dry, but the place is really outstanding!

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5 days ago
Hand holding paper model of HIV capsid

Build a paper model of the HIV capsid using this template from PDB-101 #ASBMB2026 #ASBMB26
pdb101.rcsb.org/lear...

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5 days ago
Structural studies have provided new insights into lenacapavir's unique mechanism of action. Using electron cryotomography, researchers found that treatment of intact HIV capsids with lenacapavir causes capsids to rupture, with ruptures occurring first in areas of the capsid with the highest level of curvature. The walls of lenacapavir-treated capsids were observed to flatten during early time points and fragment over the course of the experiment. This process is shown in the animation, created by Rachel Torrez in collaboration with Owen Pornillos (University of Utah). The animation was created using pdb_00009pry and pdb_00009y7j and their corresponding models in the EM Data Bank, EMD-71816 and EMD-72657.

Researchers found that treatment of intact HIV capsids with lenacapavir causes capsids to rupture, with ruptures occurring first in areas of the capsid with the highest level of curvature. #ASBMB2026 #ASBMB26
Watch in 3D at PDB-101: pdb101.rcsb.org/motm...

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6 days ago
Graph of award probability of R35 and R01 from NIH factbook as a function of review rank percentile. As is apparent, 2025 is a significant departure, with lower award probabilities at all scores <40 and significant departures from norm, where even being in the top 10% is no longer a nearly certain indicator of success.

Data source: https://report.nih.gov/nihdatabook/report/302

The data is in: the NIH goalposts have shifted.

What were once almost certain fundable scores have become coin flips and what used to be likely grants have become aspirational, leading to fewer awards.

Another manifestation of how HHS policies have led to fewer awards and less science.

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1 week ago
Figure 1. Cryo-EM of abundant protein complexes in native membranes. Figure 2. Cryo-EM of membrane proteins in vesicles. Figure 3. 3D reconstruction of V-ATPase in native synaptic vesicle membranes. Figure 4. Generation of membrane vesicles for structure determination of proteins in their native lipid bilayer.

I've written a review on what I think is an extremely exciting direction in cryo-EM:

Cryo-EM of endogenous membrane proteins in their native lipid bilayer

Open access in Quarterly Reviews of Biophysics:
doi.org/10.1017/S003...

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1 week ago
Original (left) and corrected (right) Fig. 4a in the paper https://www.nature.com/articles/s41586-026-10305-0 showing the chemical structures of amino acids (only the right one) the left figure is just an embarrassment

I wonder... 🤔🤔🧪 #chemsky

a) what program did the authors use to make the original (left) figure in the paper? Wild guess, ChatGPT

b) how such high school science level of disgrace pass peer review in @nature.com?

Note this was Fig.4.a NOT in SI

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

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1 week ago

Then you shortcircuit Deutsche Bahn?

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1 week ago
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Train booking in Germany!

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1 week ago
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A scientist is never certain.

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1 week ago
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Structural remodeling of the mitochondrial protein biogenesis machinery under proteostatic stress Cryo–electron tomography reveals how mitochondria reorganize their translation and folding systems under proteostatic stress.

Check out this beautiful study, spearheaded by Kenny @denkenny.bsky.social, on mitochondrial remodeling. Some of the prettiest organelle segmentations I have seen 😍😍😍

www.science.org/doi/10.1126/...

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1 week ago
World map highlighting countries where polio has been detected in the last 12 months

CDC issued a Global Polio Level 2 Travel Health Notice advising enhanced precautions

Tragic. We had polio almost eradicated, but disruption to vaccination campaigns due to COVID, global instability, defunding & vaccine hesitancy have led us here

#VaccinesWork
🧪

wwwnc.cdc.gov/travel/notic...

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1 week ago
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A research team from the Max Planck Institute for Multidisciplinary Sciences, the Institut Pasteur, and EMBL has shown in a Nature paper how the influenza polymerase, a molecular thief, uses the host RNA to replicate.

Check out the MPI press release: www.mpinat.mpg.de/5179649/pr_2...

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