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Max Fels

@mfels.bsky.social
129 followers 179 following 18 posts

Branco Weiss and Moderna Global Fellow at DFCI/HMS. On the lookout for the strangest viruses out there. brancoweissfellowship.org/fellow/fe…

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Reposted by Max Fels
Andrew Darwin @durkdarwin.bsky.social · 22/07/2026
After a bit of a rough patch my lab's funding situation has taken a significant upturn, so if you're looking for a Postdoc position please keep us in mind...Pseudomonas aeruginosa genetics, regulation, and physiology - with a focus on the cell envelope. Please repost. andrewdarwinlab.org
andrewdarwinlab.org
Microbiology | Andrew Darwin Lab | United States
Andrew Darwin Laboratory website. Academic Microbiology research laboratory at NYU School of Medicine. New York, NY, USA.
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Max Fels @mfels.bsky.social · 18/07/2026
"Nobel laureate Renato Dulbecco, who developed a widely used media formulation, passed away..."
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Max Fels @mfels.bsky.social · 23/04/2026
Thanks Monir and Danae for covering our work!
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Reposted by Max Fels
Krista Koeller @kristalerista.bsky.social · 07/03/2026
I am once again begging universities to take political action and support faculty taking action. Instead of doubling grant-writing efforts, give faculty .01 fte for writing op eds and articles telling the public how important their research is. Devote communications resources to the same.
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Reposted by Max Fels
Kranzusch Lab @kranzuschlab.bsky.social · 05/03/2026
@nitzantal.bsky.social @romihadary.bsky.social @soreklab.bsky.social use structure prediction and in silico binding site analysis to discover viral immune evasion proteins! Exciting for our lab @reneechang.bsky.social @riveralopz.bsky.social to help with this project. www.science.org/doi/10.1126/...
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Max Fels @mfels.bsky.social · 17/02/2026
The giant viruses surprised us at almost every turn of this project, but ultimately led us down a very rewarding path. Happy to share this work is now available online 🧪
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Max Fels @mfels.bsky.social · 25/10/2025
Viral entry converges on a cellular stress pathway to remodel host ribosomes by redirecting an additional copy of a 60S ribosomal protein to the 40S subunit! Really cool story from my colleague Hsin-Yu.
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Reposted by Max Fels
Hugo Bisio @molbiolgv.bsky.social · 15/10/2025
The latest preprint from the lab is out! Here we used structural clustering and immunoprecipitations to uncover some networks in our knowledge of giant virons proteomes. An interesting story by Hela Safi and @ambsch.bsky.social. www.biorxiv.org/content/10.1...
biorxiv.org
Elucidating the interaction network of one of the largest icosahedral capsids in the virosphere
Giant viruses challenge traditional boundaries of virology with their large particle sizes, complex genomes, and unique replication strategies. Yet, despite its 750 nm diameter and incorporation of do...
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Max Fels @mfels.bsky.social · 09/10/2025
Congrats Jason! Really well deserved!
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Max Fels @mfels.bsky.social · 02/10/2025
Hi! Can I be added to the feed please? orcid.org/0000-0003-14...
orcid.org
ORCID
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Max Fels @mfels.bsky.social · 02/10/2025
I’m grateful to everyone who worked on this project with me–Aidan, Richard, @yoitsjasmine.bsky.social , @molbiolgv.bsky.social , and Chantal. As always, huge thanks to @kranzuschlab.bsky.social and Amy for making it possible for me to work on these kinds of questions!
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Max Fels @mfels.bsky.social · 02/10/2025
This unique viral replication strategy shows that you can build sophisticated translation regulation through a very simple cap-binding complex. Perhaps there are contexts in which cellular organisms also make use of similar strategies?
A model of the function of viral IF4F.
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Max Fels @mfels.bsky.social · 02/10/2025
But why do these viruses not just rely on the host cap-binding complex? We found that mimivirus replication is unusually resistant to abiotic stresses in a way that depends on viral translation factors. Could it be an adaptation to the unusual stresses faced by the amoeba host?
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Max Fels @mfels.bsky.social · 02/10/2025
How does the viral cap-binding complex specifically promote viral translation? Viral mRNAs carry a unique 5′ UTR motif: a conserved +1A followed by AU-rich sequences. A crystal structure of vIF4E shows exactly how this mRNA cap is recognized!
Crystal structure of viral IF4E bound to a viral cap structure.
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Max Fels @mfels.bsky.social · 02/10/2025
This effect becomes obvious when looking at viral factories by TEM. Early in infection these large structures form independent of the viral cap-binding complex, but when this complex is disrupted viral particles cannot assemble.
Transmission electron micrograph showing viral factories in amoebae infected with mimivirus.
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Max Fels @mfels.bsky.social · 02/10/2025
We call these proteins viral IF4A, IF4E, and IF4G. They 1) form a complex, 2) are essential for viral replication, and 3) act as bona fide translation factors, promoting synthesis of viral structural proteins late in infection.
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Max Fels @mfels.bsky.social · 02/10/2025
In amoeba infected by mimivirus, the prototypical giant DNA virus, we found dozens of viral proteins bound to ribosomes—including three that are homologous to the eukaryotic mRNA cap-binding complex (eIF4A, eIF4E, eIF4G).
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Max Fels @mfels.bsky.social · 02/10/2025
Giant DNA viruses encode a stunning number of proteins that were long thought unique to living organisms. Among them: translation factors, the master regulators of protein synthesis. But are these viral proteins functional?
Transmission electron micrograph of a mimivirus particle.
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Max Fels @mfels.bsky.social · 02/10/2025
Are viruses capable of regulating protein synthesis in the nuanced way of cellular organisms? Kinda! I’m excited to share some of my postdoc work that leveraged giant DNA viruses to address this question.
biorxiv.org
Giant DNA viruses encode a hallmark translation initiation complex of eukaryotic life
In contrast to living organisms, viruses were long thought to lack protein synthesis machinery and instead depend on host factors to translate viral transcripts. Here, we discover that giant DNA virus...
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Reposted by Max Fels
Ben Morehouse @benmorehouse.bsky.social · 01/10/2025
Our story describing the Panoptes bacterial immune defense system is now finally peer-reviewed and published today! www.nature.com/articles/s41...
nature.com
The Panoptes system uses decoy cyclic nucleotides to defend against phage - Nature
The Panoptes antiphage system defends bacteria by detecting phage-encoded counter-defences that sequester cyclic nucleotide signals, triggering membrane disruption and highlighting a broader strategy of sensing immune evasion through second-messenger surveillance.
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Reposted by Max Fels
Kranzusch Lab @kranzuschlab.bsky.social · 29/09/2025
>18,000 new genomes of giant DNA viruses! An incredible trove of new genes and insights into evolution of host-virus interactions from @fmschu.bsky.social and @jgi.doe.gov www.biorxiv.org/content/10.1...
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Max Fels @mfels.bsky.social · 22/07/2025
Congrats! Beautiful work
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Reposted by Max Fels
Kranzusch Lab @kranzuschlab.bsky.social · 15/07/2025
Starting the lab Bluesky account to share a preprint from @aragucci.bsky.social and @sadieantine.bsky.social‬ that reveals molecular principles shared across diverse nuclease-NTPase anti-phage defense systems in bacterial immunity (1/7) www.biorxiv.org/content/10.1...
biorxiv.org
Nuclease-NTPase systems use shared molecular features to control bacterial anti-phage defense
Bacteria encode an enormous diversity of defense systems including restriction-modification and CRISPR-Cas that cleave nucleic acid to protect against phage infection. Bioinformatic analyses demonstra...
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Max Fels @mfels.bsky.social · 25/03/2025
Shameful. Sorry Jason!
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Max Fels @mfels.bsky.social · 21/12/2024
Cool work! Will you add phages or viruses of the rest of eukaryotes?
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