Franklin Nobrega's Avatar

Franklin Nobrega

@fnobrega.bsky.social

Phage Biology, Bacterial defense systems, CRISPR-Cas, Microbial communities, Mucus interactions http://www.fnobregalab.org http://www.klebphacol.org http://www.phage-collection.org

871 Followers  |  372 Following  |  48 Posts  |  Joined: 26.11.2023
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Posts by Franklin Nobrega (@fnobrega.bsky.social)

Our work on bacterial Schlafens in phage defense is out today @natmicrobiol.nature.com!

Check out the final version here:
rdcu.be/e7Bmz

We are looking for postdocs and students to expand our team! Official postings are coming soon.

Please reach out if you're interested!
#phage #phagesky #microsky

09.03.2026 16:13 โ€” ๐Ÿ‘ 47    ๐Ÿ” 28    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 1
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Big update for #gbdraw!
- Multi-record circular plots: Genomes with multiple replicons can now be displayed in a single view!
- Advanced linear plots: Focus on regions of interest with granular control over feature selection and color-coding!
Try now: gbdraw.app #microbiology #bioinformatics

08.03.2026 12:25 โ€” ๐Ÿ‘ 11    ๐Ÿ” 2    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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Mechanosensation promotes broad-spectrum antiviral defense through membrane remodeling Huang et al. define the mechano-antiviral response system (MARS) and reveal that mechanical force triggers Piezo1-dependent membrane stiffening. This establishes a broad-spectrum, interferon-independe...

The paper
"Our work identifies the mechano-antiviral response system (MARS), a natural cellular defense mechanism that strengthens the host cell membrane as a physical barrier against viruses without direct viral targeting."
www.cell.com/cell-chemica...

08.03.2026 06:26 โ€” ๐Ÿ‘ 13    ๐Ÿ” 5    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

An autonomous system for multi-objective continuous evolution at scale

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

07.03.2026 19:29 โ€” ๐Ÿ‘ 3    ๐Ÿ” 1    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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๐ŸšจPreprint! Happy to share the research from my PhD โ€œGenome delivery of a contractile tailed phage and its superinfection exclusion mechanismโ€. We use cryoEM to study the genome ejection of the phage T4, revealing how the tape measure protein regulates the process.
www.biorxiv.org/content/10.6...

07.03.2026 11:11 โ€” ๐Ÿ‘ 100    ๐Ÿ” 37    ๐Ÿ’ฌ 6    ๐Ÿ“Œ 6

CBASS is a cyclic nucleotide-based antiviral system in bacteria that is related to cGAS-STING signaling in animals. One of the big questions is how CBASS is activated during phage infection? We made some progress on this during my final year in the Kranzusch lab.
www.biorxiv.org/content/10.6...

06.03.2026 05:27 โ€” ๐Ÿ‘ 46    ๐Ÿ” 26    ๐Ÿ’ฌ 3    ๐Ÿ“Œ 2
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@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/...

05.03.2026 20:23 โ€” ๐Ÿ‘ 69    ๐Ÿ” 26    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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New post-doctoral research position in my phage-host interactions (Phi) laboratory in @otagomicroimmuno.bsky.social at @universityofotago.bsky.social New Zealand. The project is focused on defences against jumbo phages. Please share and if interested apply using the link in the comments.

04.03.2026 00:20 โ€” ๐Ÿ‘ 51    ๐Ÿ” 50    ๐Ÿ’ฌ 5    ๐Ÿ“Œ 2
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This is the first time we observed bacteria use plasmolysis to defence against phages! biorxiv.org/content/10.6...
Thanks all the authors to discover this together! @fnobrega.bsky.social Zhiying @garushyants.bsky.social Dinshaw and Eugene

04.03.2026 00:03 โ€” ๐Ÿ‘ 8    ๐Ÿ” 6    ๐Ÿ’ฌ 2    ๐Ÿ“Œ 0
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Stunning new structural analysis and mechanism for Tmn anti-phage defense by @fnobrega.bsky.social

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

03.03.2026 21:08 โ€” ๐Ÿ‘ 47    ๐Ÿ” 17    ๐Ÿ’ฌ 2    ๐Ÿ“Œ 0

Thank you!

03.03.2026 22:53 โ€” ๐Ÿ‘ 0    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

Have a read!
www.biorxiv.org/content/10.6...

03.03.2026 19:55 โ€” ๐Ÿ‘ 4    ๐Ÿ” 1    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

Proud of this powerhouse team: Yi, Zhiying, Sonya, Dinshaw & Eugene; and all other collaborators!

03.03.2026 19:55 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

Even more exciting (we may be biased!): ATP hydrolysis by this system activates other ATP-sensing antiphage defences in the cell, leading to synergistic protection.

03.03.2026 19:55 โ€” ๐Ÿ‘ 2    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

In our latest work, we characterise the Tmn defence system. We reveal plasmolysis as a new way to block phage infection, dramatically reducing secondary infections.

03.03.2026 19:55 โ€” ๐Ÿ‘ 27    ๐Ÿ” 19    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 1
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Predicting protein-protein interactions (PPIs) at proteome scale can take months with co-folding models due to the massive all-vs-all comparisons required.

We are excited to announce FlashPPI, a contrastive learning framework that predicts proteome wide physical interfaces in minutes. 1/๐Ÿงต

03.03.2026 15:07 โ€” ๐Ÿ‘ 69    ๐Ÿ” 27    ๐Ÿ’ฌ 2    ๐Ÿ“Œ 7
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With Eugene Koonin, we propose a concept of โ€œthe selfish ribosomeโ€, under which evolution of life is viewed as a ribosomal takeover, where the ribosome evolved to consume most of the cellโ€™s resources, while other cellular componentry ensures the propagation of the ribosome. arxiv.org/abs/2602.23268

03.03.2026 08:58 โ€” ๐Ÿ‘ 223    ๐Ÿ” 96    ๐Ÿ’ฌ 5    ๐Ÿ“Œ 13
PearTree โ€” Phylogenetic Tree Viewer

So I pleased to announce the conceptual spawn of FigTree: PearTree (acronym still to be finalised). If you want to dive right in it is hosted as a web app here: artic-network.github.io/peartree (click the โ€œExample...โ€ button for immediate candy and then click every button you can find).

28.02.2026 19:01 โ€” ๐Ÿ‘ 162    ๐Ÿ” 100    ๐Ÿ’ฌ 5    ๐Ÿ“Œ 4
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Now Open: Call for PhD Students Join the next RNAmed generation | Application deadline: March 24

๐ŸงฌCall for 11 fully-funded PhD positions in RNA-based medicine! ๐Ÿงฌ

The graduate program โ€œRNAmed โ€“ Future Leaders in RNA-based Medicineโ€ is recruiting its second cohort of PhD students, starting in 2027: www.helmholtz-hiri.de/en/newsroom/...

๐Ÿ“… Application deadline: March 24

๐Ÿงต (1/4)

27.02.2026 13:31 โ€” ๐Ÿ‘ 5    ๐Ÿ” 6    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0
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Biological Laboratory | LEGOยฎ Ideas This is a two-floor realistic Biological Laboratory building. In this design, I try to tell stories about biologists, introduce biology concepts to general publโ€ฆ

I just made an account and voted for this biology laboratory made of LEGO to "promote biological research and inspire more people into the world of biology". They need 10K votes. Reposting and/or voting below would be helpful. ๐Ÿค—
beta.ideas.lego.com/product-idea...

16.10.2025 08:07 โ€” ๐Ÿ‘ 221    ๐Ÿ” 131    ๐Ÿ’ฌ 8    ๐Ÿ“Œ 12

#microsky #phagesky #phage defence

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

01.03.2026 09:53 โ€” ๐Ÿ‘ 8    ๐Ÿ” 1    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

A 5-hydroxymethylcytosine DNA glycosylase provides defense against T-even bacteriophages https://www.biorxiv.org/content/10.64898/2026.02.25.707755v1

26.02.2026 05:18 โ€” ๐Ÿ‘ 11    ๐Ÿ” 7    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
MicroSEA (Microbial Sea Eukaryotes) course is a one-week, field-based summer school to train early-career researchers in the diversity, ecology, and single-cell biology of marine protists. MicroSEA course integrates lectures, field sampling, and lab-based practicals in advanced techniques, such as flow cytometry, microscopy, culturing, and molecular analysis.

The main objectives of MicroSEA course are: 

Fostering a deep understanding of marine protist diversity, ecology and biology;
Providing hands-on training in advanced single-cell methods that are not commonly available in university programs;
Building participants' confidence in designing and conducting research projects from field to data analysis;
Promoting international collaborations and peer networking among students and speakers/trainers.
The course will take place at the Station Biologique de Roscoff - SBR (France) - 7th to 12th of June, 2026 (arrival on the 6th, departure on the 13th).

20 participants will be selected, including 10 from EuroMarine member institutes.

https://opbc.sciencesconf.org/

MicroSEA (Microbial Sea Eukaryotes) course is a one-week, field-based summer school to train early-career researchers in the diversity, ecology, and single-cell biology of marine protists. MicroSEA course integrates lectures, field sampling, and lab-based practicals in advanced techniques, such as flow cytometry, microscopy, culturing, and molecular analysis. The main objectives of MicroSEA course are: Fostering a deep understanding of marine protist diversity, ecology and biology; Providing hands-on training in advanced single-cell methods that are not commonly available in university programs; Building participants' confidence in designing and conducting research projects from field to data analysis; Promoting international collaborations and peer networking among students and speakers/trainers. The course will take place at the Station Biologique de Roscoff - SBR (France) - 7th to 12th of June, 2026 (arrival on the 6th, departure on the 13th). 20 participants will be selected, including 10 from EuroMarine member institutes. https://opbc.sciencesconf.org/

Protist lovers: Please apply for a week of rhapsody! Learn by doing:

MicroSEA (Microbial Sea Eukaryotes) course is a one-week, field-based summer school to train early-career researchers in the diversity, ecology, and single-cell biology of marine protists. opbc.sciencesconf.org

#protistsonsky

26.02.2026 22:15 โ€” ๐Ÿ‘ 50    ๐Ÿ” 39    ๐Ÿ’ฌ 5    ๐Ÿ“Œ 6
Overview โ€” AllTheBacteria documentation

Courtesy of @martibartfast.bsky.social , we have a new release of AllTheBacteria which adds another 322,920 assemblies, covering all ENA (illumina, isolate) prokaryotes to May 2025.
allthebacteria.readthedocs.io/en/latest/ov...

26.02.2026 15:48 โ€” ๐Ÿ‘ 60    ๐Ÿ” 28    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 3

Cell death is a fundamental mechanism of antiviral immunity across diverse organisms, including bacteria. As my final PhD project with @jbdsf.bsky.social, I was curious whether cell death is required for successful immunity with the ancient cGAS pathway known as โ€˜CBASS.โ€™

Spoiler โ€“ the answer is no!

26.02.2026 16:25 โ€” ๐Ÿ‘ 36    ๐Ÿ” 14    ๐Ÿ’ฌ 2    ๐Ÿ“Œ 2
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Faculty position in Plant Molecular Biology (Associate Professor or Tenure-Track Assistant Professor) at Aarhus University, Denmark
mbg.au.dk/aktuelt/ledi...

25.02.2026 09:35 โ€” ๐Ÿ‘ 35    ๐Ÿ” 52    ๐Ÿ’ฌ 2    ๐Ÿ“Œ 1
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1/5
Happy by a recent biorxiv pre-print about DARNA (PD-T7-3) anti-phage defense system. This system is activated by binding to ssDNA, presented by phage SSB, to cleave tRNA in the anti-codon loop.
www.biorxiv.org/content/10.6...

24.02.2026 08:08 โ€” ๐Ÿ‘ 46    ๐Ÿ” 24    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0
RNA Society

The most important #RNA conference of the year with lots of amazing science and a really friendly atmosphere. This year in beautiful Montreal ๐Ÿ‡จ๐Ÿ‡ฆ !

www2.rnasociety.org

24.02.2026 12:05 โ€” ๐Ÿ‘ 20    ๐Ÿ” 13    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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Diversity and distribution of bacterial DNA polymerases Abstract. DNA polymerases are key players in DNA replication, repair, and maintenance. However, the overall abundance, diversity, and distribution of bacte

Check out largest scale analysis of bacterial DNA polymerases! Diversity and distribution of bacterial DNA polymerases url: academic.oup.com/nar/article/...

23.02.2026 17:59 โ€” ๐Ÿ‘ 15    ๐Ÿ” 6    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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Looking for a truly unique PhD programme on RNA drugs and therapeutics? We have just opened the call for the second cohort of RNAmed-Future leaders in RNA-based medicine. More details under www.rnamed.de Please spread the word.

23.02.2026 19:56 โ€” ๐Ÿ‘ 14    ๐Ÿ” 19    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 2