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Philippe Le Mercier, ViralZone

@viralzone

Virologist

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14.01.2025
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Latest posts by Philippe Le Mercier, ViralZone @viralzone

⏰Abstract submission for #ViBioM2026 is open until midnight tonight (00:00 CET) - Don't miss your chance to present a talk at the International Virus Bioinformatics Meeting! πŸŽ€πŸ¦ πŸ§¬πŸ’»
πŸ‘‰ evbc.uni-jena.de/events/vibio...
#virology #bioinformatics

06.03.2026 08:25 πŸ‘ 1 πŸ” 3 πŸ’¬ 0 πŸ“Œ 0

Direct binding to host Pol II for cap snatching could explain why this negative-strand RNA virus replicates in the nucleus. Really elegant biology.

05.03.2026 09:16 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Co-transcriptional cap snatching by influenza virus RNA-dependent RNA polymerase helps make viral mRNAs stable and competent for nuclear export and translation @nature.com @maxplanck.de
www.nature.com/articles/s41...

05.03.2026 03:00 πŸ‘ 3 πŸ” 3 πŸ’¬ 3 πŸ“Œ 0
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Coupling of polymerase-nucleoprotein-RNA in an influenza virus mini ribonucleoprotein complex - Nature Communications Influenza virus ribonucleoprotein complexes (RNPs) are essential for replication and transcription. Here, authors solve the cryo-EM structure of influenza mini-vRNP to reveal detailed FluPol–NP–RNA coupling and suggest a conformational shift in RNPs during the viral life cycle.

A real nice work on influenza replication complex :
Coupling of polymerase-nucleoprotein-RNA in an influenza virus mini ribonucleoprotein complex | Nature Communications

https://www.nature.com/articles/s41467-025-64741-z

25.02.2026 11:29 πŸ‘ 1 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
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Exploring ICTV virus metadata just got easier on ViralZone β€” interactive table, instant CSV export, and full search. The new species names are displayed alongside virus names and acronyms.

viralzone.expasy.org/resources/VM...

(source: ictv.global/vmr)

18.02.2026 10:35 πŸ‘ 6 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0
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The ViralZone alphavirus virion just got an update based on the latest chikungunya virus data. Check out the fascinating pattern of the capsid linked to the membrane proteins.

viralzone.expasy.org/625

18.02.2026 10:19 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Congratulations on this incredible milestone! Five years of pioneering work on viral proteins, and now Viro3D integrated into AlphaFold DB β€” that's the kind of data that moves science forward. Well deserved! πŸŽ‰

18.02.2026 09:40 πŸ‘ 3 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0

It is almost five years since I first applied AlphaFold to a handful of viral proteins.

Today, hundreds of thousands of predictions and many discoveries later, we are delighted to announce the integration of our Viro3D dataset into the @ebi.embl.org and Google DeepMind AlphaFold Database.

18.02.2026 08:22 πŸ‘ 37 πŸ” 11 πŸ’¬ 2 πŸ“Œ 0
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That is some cool shit, right there! Detailed structure of a herpesvirus tail!! Lineal descendants of bacterial viruses and their structures are among us....😁 www.biorxiv.org/content/10.6...

17.02.2026 09:51 πŸ‘ 15 πŸ” 1 πŸ’¬ 1 πŸ“Œ 0
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Exclusive: Key US infectious-diseases centre to drop pandemic preparation Staff members have been instructed to scrub this topic and β€˜biodefense’ from the agency’s website.

The NIAID is expected to deprioritize biodefense and pandemic preparedness in an overhaul of its funded research projects

go.nature.com/4kBhiRT

16.02.2026 12:38 πŸ‘ 33 πŸ” 22 πŸ’¬ 6 πŸ“Œ 6

Here we go: a method to predict symmetric protein complexesβ€”exactly what’s needed to reconstruct full viral capsids from AlphaFold models.

05.02.2026 17:00 πŸ‘ 2 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
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Rabies an increasing threat in Ukraine Cases of rabies infection in animals and animal bites in humans have been increasing in Ukraine since Russia's invasion of the country in February, 2022. Ed Holt reports.

Rabies an increasing threat in Ukraine - The Lancet Infectious Diseases www.thelancet.com/journals/lan...

04.02.2026 15:40 πŸ‘ 1 πŸ” 1 πŸ’¬ 1 πŸ“Œ 0
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Nipah virus outbreaks in Kerala - Wikipedia

Nipah virus was first identified in Malaysia, but in the past decade outbreaks have repeatedly hit Kerala, India (2018, 2019, 2021, 2023, 2024), causing at least 21 deaths. In 2025, suspected cases are once again under investigation.
en.wikipedia.org/wiki/Nipah_v...

30.01.2026 10:45 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Here’s a genomic map of Nipah virus sequences collected globally from ~1998–2025, based on Nextstrain’s phylogenetic dataset.
nextstrain.org/nipah/all

30.01.2026 10:45 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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Nipah virus is a long-known zoonosis, spilling over from fruit bats and capable of human-to-human spread. Small outbreaks occur almost every year, especially in Kerala, India.

In the recent West Bengal outbreak, the unknown source of infection has led to heightened precautions.

30.01.2026 10:45 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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Multiple protein structure alignment at scale with FoldMason Protein structure is conserved beyond sequence, making multiple structural alignment (MSTA) essential for analyzing distantly related proteins. Computational prediction methods have vastly extended ou...

FoldMason is out now in @science.org. It generates accurate multiple structure alignments for thousands of protein structures in seconds. Great work by Cameron L. M. Gilchrist and @milot.bsky.social.
πŸ“„ www.science.org/doi/10.1126/...
🌐 search.foldseek.com/foldmason
πŸ’Ύ github.com/steineggerla...

30.01.2026 06:11 πŸ‘ 300 πŸ” 147 πŸ’¬ 4 πŸ“Œ 3
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Rift Valley Fever continues to spread among humans, livestock, & wildlife throughout west Africa. Learn more about the wide-ranging impacts of this disease at an upcoming webinar on Jan 20 hosted by @buceid.bsky.social & @onehealthinstitute.bsky.social VISTA program.
bostonu.zoom.us/webinar/regi...

12.01.2026 20:07 πŸ‘ 1 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0
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Nucleus softens during herpesvirus infection Author summary DNA viruses take over the host cell nucleus, inducing dramatic structural modifications. There is currently very little knowledge of how the progression of viral infection modifies the ...

Nucleus softens during herpesvirus infection

journals.plos.org/plospathogen...

21.01.2026 13:41 πŸ‘ 2 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
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The infection enigma: why some people die from typically harmless germs
www.nature.com/articles/d41... @nature.com @dianakwon.bsky.social

14.01.2026 19:01 πŸ‘ 3 πŸ” 3 πŸ’¬ 1 πŸ“Œ 0
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Zoom seminar:
Drawing on recent mechanistic and genetic studies, Prof Andres Merits' talk will highlight how #alphavirus #replication complex function intersects with innate #immune sensing and restriction, offering fresh perspectives on virus–host co-evolution and antiviral targeting. All welcome!

13.01.2026 08:01 πŸ‘ 9 πŸ” 5 πŸ’¬ 0 πŸ“Œ 1
An illustration of a PanMAN graph with colorful A T C and Gs flowing into a phylogenetic tree.

An illustration of a PanMAN graph with colorful A T C and Gs flowing into a phylogenetic tree.

New "PanMAN" tool for pangenomics compresses millions of genomes into a tiny fraction of storage space: 8 million SARS-CoV-2 sequences in 366MB! Builds on pathogen tracking tools pioneered @ucsantacruz.bsky.social. Will improve public health response & vaccine development. doi.org/10.1038/s415...

12.01.2026 17:52 πŸ‘ 5 πŸ” 4 πŸ’¬ 2 πŸ“Œ 0

From inert nutshell to transcriptional factory: a remarkable discovery showing how a simple viral capsid springs to life upon access to NTPs in the infected cell.

09.01.2026 10:58 πŸ‘ 2 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0

A new kind of viral oncogenesis β€” beautifully demonstrated. It suddenly all makes sense.

09.01.2026 10:32 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Virus-induced APOBEC3 transmutagenesis in bladder cancer initiation - PubMed Carcinogenesis in human urothelium is driven by a high burden of mutations caused by the antiviral "APOBEC3" (apolipoprotein B mRNA editing enzyme, catalytic subunit-like 3) cytosine deaminase enzymes; however, there is no established viral etiology. BK polyomavirus (BKPyV) is a ubiquitous childhood …

Very interesting paper from the beautiful city of York, which provides a mechanistic explanation for the epidemiological link between BK polyomavirus infection/replication in kidney transplant recipients, and subsequent urothelial carcinoma. pubmed.ncbi.nlm.nih.gov/41337590/

09.01.2026 08:24 πŸ‘ 1 πŸ” 1 πŸ’¬ 2 πŸ“Œ 0
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πŸ“’Join us for the next ECR #Viromics Webinar
"Ocean physics, phytoplankton-virus interactions and the carbon cycle: implications for aggregation and export"
β€πŸŽ™οΈDr. Kay Bidle, Rutgers University, USA
πŸ—“οΈ14 Jan 2026, 4 PM CET
πŸ“Online/Zoom (register for login details)
πŸ‘‰ evbc.uni-jena.de/events/ecr-v...

09.01.2026 09:39 πŸ‘ 2 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
 dsRNA injection to N. vectensis zygotes triggers mild and transient gene knockdown. Top: Schematic representation of the dsRNA carrying eGFP sequence used in this study and of the transgene of the actin::eGFP line [40]. Bottom left: Heterozygous actin::eGFP embryos showing dimmer eGFP fluorescence 24 hpi of dsRNA carrying eGFP sequence (left) compared to scrambled eGFP sequence (right). Scale bars represent 500 Β΅m. Bottom right: No difference in eGFP fluorescence of heterozygous actin::eGFP embryos is exhibited 72 hpi of dsRNA carrying eGFP sequence (left) compared to scrambled eGFP sequence (right). Scale bars represent 500 Β΅m.

dsRNA injection to N. vectensis zygotes triggers mild and transient gene knockdown. Top: Schematic representation of the dsRNA carrying eGFP sequence used in this study and of the transgene of the actin::eGFP line [40]. Bottom left: Heterozygous actin::eGFP embryos showing dimmer eGFP fluorescence 24 hpi of dsRNA carrying eGFP sequence (left) compared to scrambled eGFP sequence (right). Scale bars represent 500 Β΅m. Bottom right: No difference in eGFP fluorescence of heterozygous actin::eGFP embryos is exhibited 72 hpi of dsRNA carrying eGFP sequence (left) compared to scrambled eGFP sequence (right). Scale bars represent 500 Β΅m.

#RNAi is an ancestral #antiviral system that degrades viral RNA, but what about in #cnidarians? @yehumoran.bsky.social &co show that #Nematostella has an siRNA-mediated antiviral response that lacks 2ary amplification & functions as a short-term antiviral mechanism @plosbiology.org πŸ§ͺ plos.io/3N192OD

07.01.2026 17:32 πŸ‘ 6 πŸ” 3 πŸ’¬ 0 πŸ“Œ 0
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Fresh conflicts erupt around giant database for flu and COVID-19 sequences Critics say β€œautocratic” behavior by GISAID could hamper response to a future pandemic

The fundamental problem with GISAID is this - data on the platform are neither open, nor FAIR.

Such data - key for combating infectious diseases - are, by a large margin, paid for by taxpayers and hence must be openly available to all.

With GISAID, they are not.

www.science.org/content/arti...

07.01.2026 17:23 πŸ‘ 21 πŸ” 8 πŸ’¬ 1 πŸ“Œ 0

Deeply saddened by the sudden passing of Amos Bairoch. He introduced me to bioinformatics 22 years ago and helped shape our field with resources like Swiss-Prot, Cellosaurus, and ViralZone. I’ve lost a friend, and the community has lost a visionary.

03.12.2025 11:23 πŸ‘ 5 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Where Do Viruses Come From? Using genomics, evolutionary biologists test several hypotheses on the origin of viruses. New evidence suggests they may have emerged more times than previously thought.

Interesting! I have been teaching the multiple origins of viruses since 1983, I will point out...😁
www.the-scientist.com/where-do-vir...

02.12.2025 09:02 πŸ‘ 16 πŸ” 7 πŸ’¬ 1 πŸ“Œ 0

H5N1 in bats - what should we think about this?
@itingtu.bsky.social explains her recent preprint (a collaboration with multiple @cvrinfo.bsky.social groups) in a really nice interview with @science.org
www.science.org/content/arti...

26.11.2025 15:40 πŸ‘ 11 πŸ” 7 πŸ’¬ 1 πŸ“Œ 0