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Pedro Leão

@pedroleao.bsky.social
1.1K followers 504 following 177 posts

Assistant Professor at Radboud University 🇳🇱 | Brazilian microbiologist 🇧🇷 | Impact of virus-host interactions in Ecology and Evolution 👀 vee-lab.eu

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Reposted by Pedro Leão
Earlham Institute @earlhaminst.bsky.social · 26/09/2026
Drawing on existing knowledge and success stories from the community, researchers are looking to tackle major technical barriers in protist sequencing, including extraction, cell lysis, and DNA amplification methods. 🦠🧬 #protists #sequencing
okt.to
Unlocking the potential of protist research
A new collaboration will tackle major technical challenges currently limiting protist genomics, helping to unlock the potential of protist research for biomanufacturing, sustainable agriculture and environmental applications.
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Reposted by Pedro Leão
Javier del Campo @fonamental.bsky.social · 23/09/2026
A genomic catalog of Earth’s bacterial and archaeal symbionts #symbiosis www.nature.com/articles/s41...
nature.com
A genomic catalog of Earth’s bacterial and archaeal symbionts - Nature Biotechnology
Symbiotic relationships of microorganisms are predicted and cataloged with a machine learning tool.
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Pedro Leão @pedroleao.bsky.social · 24/09/2026
I know Mike 😎 @msmjetten.bsky.social ! 😅
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Pedro Leão @pedroleao.bsky.social · 24/09/2026
We have quite a nice event lined up for the KNVM Fall Meeting - Fundamental Microbiology It's a small event, but we'll have a bit of everything, with archaea, viruses, bacteria and even fish microbiome 🐟😅 📍Leiden, The Netherlands 🗓️ November 6, 2026 📝 Registration: www.formdesk.com/universiteit...
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Reposted by Pedro Leão
Tom Gauld @tomgauld.bsky.social · 24/09/2026
My latest @newscientist.com cartoon. many more here: www.newscientist.com/author/tom-gauld/
Image: A graph with lots of red dots clustered together in a curve. The are all looking upwards at a single red dot wearing sunglasses. 

Caption: Mike was an outlier and would probably be excluded from the study, but all the other data points secretly thought he was really cool.
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Reposted by Pedro Leão
Cameron Thrash @jcamthrash.bsky.social · 24/09/2026
A methanogen hydrolase reveals the structure of archaeal peptidoglycan www.nature.com/articles/s41... #jcampubs
nature.com
A methanogen hydrolase reveals the structure of archaeal peptidoglycan - Nature
ArmA from Methanobrevibacter smithii, a dominant member of the human gut microbiome, is identified and characterized as a glycosyl hydrolase specific for cleaving the cell wall of methanogens, reveali...
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Reposted by Pedro Leão
Dirk-Jan Scheffers 🟥 @dirkscheffers.bsky.social · 24/09/2026
New L-form study from Dennis Claessen and colleagues. #microsky
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Reposted by Pedro Leão
Evgenii Protasov @evgenii-protasov.bsky.social · 24/09/2026
An eco-evolutionary theory of host-associated microbiomes #microbiology #microbiomes #evolution #MicroSky @pnas.org www.pnas.org/doi/abs/10.1...
pnas.org
PNAS
Proceedings of the National Academy of Sciences (PNAS), a peer reviewed journal of the National Academy of Sciences (NAS) - an authoritative source of high-impact, original research that broadly spans...
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Reposted by Pedro Leão
Simonetta Gribaldo @sgribaldo.bsky.social · 23/09/2026
Interested in #archaea, #methane, #cell-envelopes? New paper out @nature.com ! We discovered an enzyme that specifically cleaves the cell wall of methanogens, revealing a new chemical structure of archaeal peptidoglycan, 50 yrs after its first description www.nature.com/articles/s41... #MicroSky 🧵👇
nature.com
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Reposted by Pedro Leão
abacbs.bsky.social @abacbs.bsky.social · 09/04/2026
Very interesting read. www.asimov.press/p/bioinforma... (Thanks to @torstenseemann.bsky.social for sharing over on the #ABACBS slack)
asimov.press
A Brief History of Bioinformatics Software
How computer scientists on the fringes of biology made sense of sequencing data.
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Reposted by Pedro Leão
Carl Zimmer @carlzimmer.com · 17/09/2026
I wrote about what came before CRISPR 4 billion years ago: a war among viruses. Gift link: nyti.ms/3TBq4q0
nyti.ms
The Next Gene-Editing Technology May Also Be the Oldest (Gift Article)
Scientists have discovered a powerful gene-targeting system in viruses. Billions of years old, VIPR seems to predate CRISPR and may be even more powerful.
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Reposted by Pedro Leão
Kranzusch Lab @kranzuschlab.bsky.social · 17/09/2026
New enzymes that create natural phosphorothioate modifications in RNA share homology with proteins in bacterial DndABCDE anti-phage defense! www.cell.com/cell/abstrac...
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Reposted by Pedro Leão
Roland Hatzenpichler @environmicrobio.bsky.social · 16/09/2026
“Over two days in June, Emily Aguilar-Pine drove 2,500 kilometres from Bozeman, Montana, to Austin, Texas, with one of microbiology’s most coveted organisms in the back of her mother’s SUV.” Find out what she grabbed from my lab in the article 😂
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Reposted by Pedro Leão
Alisa Bokulich @alisabokulich.bsky.social · 16/09/2026
Postdoc in history of physics @ Radboud University in The Netherlands on "Origins of Irreversibility" part of larger grant to explore fundamental questions concerning entropy, chaos, & irreversibility #HPS ⚛️ Deadline: 14 October 2026 Duration: 2 years, starting 2027 www.ru.nl/en/working-a...
ru.nl
Postdoc Positions: Origins of Irreversibility | Radboud University
Do you want to work as a Postdoc at the Faculty of Science? Check our vacancy!
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Pedro Leão @pedroleao.bsky.social · 09/09/2026
A great study showing how we still need to improve our protein annotation tools. Check on Figure 3 on how we need even more attention in teh archaeal field. doi:10.1186/s13059-026-04262-0 sciflow.eu?paper=2216687
sciflow.eu
Large-scale benchmarking of prokaryotic annotation tools across thousands of species.
Genome Biol · 04 Sep 2026 — Background Genome annotation is an important step in deriving functional meaning from prokaryotic sequencing data, yet systematic evaluations guiding tool selection are lac...
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Reposted by Pedro Leão
Dirk-Jan Scheffers 🟥 @dirkscheffers.bsky.social · 07/09/2026
Nieuwe column - English translation to follow.
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Pedro Leão @pedroleao.bsky.social · 07/09/2026
Type IV-C CRISPR-Cas effector complexes recognize double-stranded DNA and switch on collateral cleavage of ssDNA and RNA. doi:10.1016/j.celrep.2026.117939 sciflow.eu?paper=2072705
sciflow.eu
Type IV-C CRISPR-Cas effector complexes recognize double-stranded DNA and switch on collateral cleavage of ssDNA and RNA.
Cell Rep · 05 Sep 2026 — Type IV-C CRISPR-Cas systems remain enigmatic compared to other class 1 systems. Here, we expand the type IV-C catalog, identifying two phylogenetically distinct clades primar...
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Pedro Leão @pedroleao.bsky.social · 04/09/2026
Methanogens: vital but threatened members of the human microbiome? doi:10.1016/j.tim.2026.08.008 sciflow.eu?paper=1853828
sciflow.eu
Methanogens: vital but threatened members of the human microbiome?
Trends Microbiol · 03 Sep 2026 — Methanogens are an ancestral group of archaea that occupy a unique niche within the human gut microbiome by virtue of their methane production. In this process, they s...
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Pedro Leão @pedroleao.bsky.social · 01/09/2026
A dual methane production mechanism mediated by enzymatic catalysis and the Fenton reaction in the wood-rotting fungus Schizophyllum commune. doi:10.1128/aem.01298-26 sciflow.eu?paper=1291803
sciflow.eu
A dual methane production mechanism mediated by enzymatic catalysis and the Fenton reaction in the wood-rotting fungus Schizophyllum commune.
Appl Environ Microbiol · 27 Aug 2026 — Understanding biological sources of methane is critical for elucidating the global methane cycle and addressing climate change. While traditional research has pr...
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Pedro Leão @pedroleao.bsky.social · 01/09/2026
Interactions between a Methanogenic Archaeon and Synthetic Musk Tonalide: A Balance of Cellular Inhibition and Detoxifying Biotransformation. doi:10.1021/acs.est.6c09246 sciflow.eu?paper=1561184
sciflow.eu
Interactions between a Methanogenic Archaeon and Synthetic Musk Tonalide: A Balance of Cellular Inhibition and Detoxifying Biotransformation.
Environ Sci Technol · 01 Aug 2026 — The widespread use of synthetic musks, such as tonalide (AHTN), has led to their accumulation in anaerobic environments, such as sludge and sediments, raising conce...
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Pedro Leão @pedroleao.bsky.social · 01/09/2026
📢 "We estimate that $3.7 billion was spent on APCs across the 14 publishers in our sample in 2025" Every single person in academia knows that this system is broken, unsustanable. In this amazing work we can see the data. The costs, and "investments" in these publications make no sense.
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Pedro Leão @pedroleao.bsky.social · 31/08/2026
A minimal Asgard archaeal ESCRT-III system remodels membranes across scales doi:10.21203/rs.3.rs-10742307/v1 sciflow.eu?paper=1293004
sciflow.eu
A minimal Asgard archaeal ESCRT-III system remodels membranes across scales
Research Square · 28 Aug 2026 — Abstract Cells remodel membranes across spatial scales, from cell division to nanoscale scission. In eukaryotes, ESCRT-III/Vps4 machineries remodel endosomal membranes ...
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Reposted by Pedro Leão
Michelle Facette @mfacette.bsky.social · 28/08/2026
UMass Amherst Dept of Biology is hiring a TT faculty member in Evolutionary Biology! careers.umass.edu/jobs/assista... We have a diverse and wonderful dept - please consider joining us!
careers.umass.edu
Assistant Professor - Evolutionary Biology - Amherst, Massachusetts, United States
Title: Assistant Professor - Evolutionary Biology Executive Area: Academic Affairs College/School/MBU: College of Natural Sciences Department: Biology Work Location: Amherst Schedule: Full Time Work A...
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Reposted by Pedro Leão
Cameron Thrash @jcamthrash.bsky.social · 28/08/2026
MicroID Lab Guide: an open-source, customizable web application to guide students through unknown bacterial identification in undergraduate microbiology labs journals.asm.org/doi/10.1128/... #jcampubs
journals.asm.org
MicroID Lab Guide: an open-source, customizable web application to guide students through unknown bacterial identification in undergraduate microbiology labs | Journal of Microbiology & Biology Education
Identifying the species of unknown bacterial isolates is one of the core competencies in many undergraduate microbiology courses, in which students have to apply various bacterial lab techniques to gather data on the unknown bacteria’s characteristics using a logical approach based on morphology, results of tests using selective and differential media, and biochemical test results (1, 2). The exercise develops critical thinking that parallels clinical and environmental workflows. However, the open-ended nature of the exercise poses challenges: students must decide which tests to run, interpret multi-observation assays such as Kligler’s Iron Agar, and maintain organized records across laboratory sessions (3). A paper or electronic record-based datasheet does not provide any feedback on the logical consistency of the results entered, and students may not realize gaps, errors, or inconsistencies in their results until a false result or inconclusive result is the final conclusion.
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Pedro Leão @pedroleao.bsky.social · 29/08/2026
PhagePickr: A bacteria-centric computational tool for designing evolution-proof phage cocktails doi:10.64898/2026.03.23.713575 sciflow.eu?paper=1219264
sciflow.eu
PhagePickr: A bacteria-centric computational tool for designing evolution-proof phage cocktails
bioRxiv · 28 Aug 2026 — As antibiotic resistance poses a major threat to global health, phage therapy offers an alternative to antibiotic treatments in the face of multidrug-resistant bacteria. Howeve...
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Pedro Leão @pedroleao.bsky.social · 28/08/2026
The prokaryotic lipid divide: how strict is it? doi:10.1515/hsz-2026-0149 sciflow.eu?paper=958371
sciflow.eu
The prokaryotic lipid divide: how strict is it?
Biol Chem · 26 Aug 2026 — A long-lasting dogma regarding the membranes of prokaryotes is the distinct lipid composition of archaea and bacteria. Bacterial phospholipids consist of acyl chains that are...
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Pedro Leão @pedroleao.bsky.social · 28/08/2026
That's a quite interesting used of FAISS in biology! I looking forward to try iy. Anniemap: Vector Search for Viral Short Read Alignment doi:10.64898/2026.08.26.747390 sciflow.eu?paper=1186821
sciflow.eu
Anniemap: Vector Search for Viral Short Read Alignment
bioRxiv · 28 Aug 2026 — Background: The process of aligning sequencing reads to a reference genome is a foundational step in genomic analysis, underpinning tasks from variant detection to pathogen sur...
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Pedro Leão @pedroleao.bsky.social · 27/08/2026
aiandeducation.mit.edu/report/#31-a... Turn AI-use into a "us vs them" narrative moves us away from the core nature of any university: provide education It's not the easy road, but we must adapt to the new reality. Inform and educate people on how to use AI to enhance their potential, not limit it
aiandeducation.mit.edu
Report – AI and Education
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Pedro Leão @pedroleao.bsky.social · 27/08/2026
Very well deserved 🥳
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Reposted by Pedro Leão
Evelien Adriaenssens @evelienadri.bsky.social · 27/08/2026
Dear eukaryotic, archaeal and bacterial virologists, I don't know how most of you feel about taxonomy, but it has an impact on all of our working lives. I am curious to hear from you about your opinion on subspecies classification based on this survey: www.microbiologyresearch.org/content/jour...
microbiologyresearch.org
Virus community views on the possible extension of virus taxonomic assignments to a below-species rank
The International Committee on Taxonomy of Viruses (ICTV) is considering a proposal submitted in July 2025 to create an optional additional taxonomic rank below the level of species. This was designed...
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Pedro Leão @pedroleao.bsky.social · 27/08/2026
Structure of a dodecameric double-ferritin-fold protein from an Asgard archaeon doi:10.64898/2026.08.25.747088 sciflow.eu?paper=1072237
sciflow.eu
Structure of a dodecameric double-ferritin-fold protein from an Asgard archaeon
bioRxiv · 26 Aug 2026 — Ferritins are ubiquitous iron homeostasis proteins found across the tree of life that form conserved 24-subunit cages with octahedral (4-3-2) symmetry. New types of ferritins a...
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Reposted by Pedro Leão
Cameron Thrash @jcamthrash.bsky.social · 25/08/2026
Microbial co-metabolism in the degradation of emerging organic pollutants www.sciencedirect.com/science/arti... #jcampubs
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Pedro Leão @pedroleao.bsky.social · 26/08/2026
A tRNA-derived second messenger mediates antiviral defense doi:10.64898/2026.08.25.746378 sciflow.eu?paper=1011902
sciflow.eu
A tRNA-derived second messenger mediates antiviral defense
bioRxiv · 26 Aug 2026 — CRISPR-Cas systems are RNA-guided nucleases that enable prokaryotic immunity; however, some loci encode additional associated genes that cooperate with CRISPR effectors to perf...
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Pedro Leão @pedroleao.bsky.social · 25/08/2026
The diverse functions of viral microproteins doi:10.64898/2026.08.23.746553 sciflow.eu?paper=926931
sciflow.eu
The diverse functions of viral microproteins
bioRxiv · 24 Aug 2026 — A large fraction of the uncharacterized proteome consists of microproteins. Viruses, rich in microproteins with potent activities, provide a unique system for exploring their f...
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Pedro Leão @pedroleao.bsky.social · 25/08/2026
Lanthanium addition diversifies organic acid oriduction and significantly enhances methane production in a methanogenic consortium doi:10.64898/2026.08.24.746690 sciflow.eu?paper=947021
sciflow.eu
LANTHANUM (LaCl3) ADDITION DIVERSIFIES ORGANIC ACID PRODUCTION AND SIGNIFICANTLY ENHANCES METHANE PRODUCTION IN A METHANOGENIC CONSORTIUM
bioRxiv · 24 Aug 2026 — Trace elements, such as iron, nickel, and cobalt are known to regulate methanogenic activity in anaerobic digestors used for waste valorisation, but the potential role of rare ...
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Reposted by Pedro Leão
Mike Jetten @msmjetten.bsky.social · 25/08/2026
Adaptation mechanisms of #ANAMMOX bacteria to extreme environments link.springer.com/article/10.1...
link.springer.com
Adaptation mechanisms of ANAMMOX bacteria to extreme environments - Archives of Microbiology
Anaerobic ammonium oxidation (ANAMMOX) bacteria (AnAOB) play a vital role in the global nitrogen cycle and have emerged as a promising alternative for sustainable nitrogen removal in wastewater treatm...
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Pedro Leão @pedroleao.bsky.social · 24/08/2026
"In recent years, the Netherlands has implemented several policies to make the country less attractive for international students... At the same time, countries like France and Germany are putting policies into place that make their countries more appealing for foreign students..." 🤔🤔🤔
share.google
Netherlands popular with int'l students for English-taught courses, affordable tuition
International students value Dutch higher education institutions for the wide availability of English-taught courses, affordable tuition, and quality education, according to a new study by Nuffic. The...
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Pedro Leão @pedroleao.bsky.social · 24/08/2026
The million dollar questions... 😅 Why are archaea not pathogenic? A hypothesis based on metabolism-habitat covariation. doi:10.1128/mbio.01185-26 sciflow.eu?paper=579010
sciflow.eu
Why are archaea not pathogenic? A hypothesis based on metabolism-habitat covariation.
mBio · 21 Aug 2026 — Pathogenicity, the ability to cause infectious diseases in multicellular eukaryotes, is widespread among bacteria and eukaryotes but has not been reliably identified in archaea. T...
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Reposted by Pedro Leão
Nadieh Bremer @nadiehbremer.com · 18/08/2026
New Data Art! ✨ Did you know cities grow like bacteria? 🦠🏙️ For my new piece "Growing Cities," I collaborated with EPFL URBES Lab to visualize the evolution of 13 Chinese cities as radial, "tree-ring" growth See the data artwork here: www.visualcinnamon.com/art/epfl-gro... #DataViz #DataArt
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Pedro Leão @pedroleao.bsky.social · 23/08/2026
Microbial valorization of E-waste: Bacterial recycling and synthesis of technology-critical metal nanoparticles. doi:10.1016/bs.ampbs.2026.06.001 sciflow.eu?paper=577223
sciflow.eu
Microbial valorization of E-waste: Bacterial recycling and synthesis of technology-critical metal nanoparticles.
Adv Microb Physiol · 24 Jun 2026 — Electronic waste (E-waste) is one of the fastest growing waste streams worldwide, posing serious challenges for environmental and human health, while representing a ...
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Pedro Leão @pedroleao.bsky.social · 23/08/2026
Genome-resolved assessment of archaeal diversity in full-scale anaerobic digesters reveals variability in mcrA primer coverage. doi:10.1093/jambio/lxag212 sciflow.eu?paper=732391
sciflow.eu
Genome-resolved assessment of archaeal diversity in full-scale anaerobic digesters reveals variability in mcrA primer coverage.
J Appl Microbiol · 22 Aug 2026 — Methanogenic archaea are key players in anaerobic digestion, driving methane production in biogas reactors. This study aimed to assess the diversity of methanogenic ar...
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Pedro Leão @pedroleao.bsky.social · 22/08/2026
Structural and functional analysis of peptidyl-tRNA hydrolase 2 from Candidatus Lokiarchaeum sp. GC14_75. doi:10.1107/s2053230x26008423 sciflow.eu?paper=580207
sciflow.eu
Structural and functional analysis of peptidyl-tRNA hydrolase 2 from Candidatus Lokiarchaeum sp. GC14_75.
Acta Crystallogr F Struct Biol Commun · 01 Sep 2026 — Peptidyl-tRNA hydrolase (Pth2) hydrolyzes peptidyl-tRNA, an immature product of aborted translation, into peptide and tRNA, thereby maintaining ce...
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Reposted by Pedro Leão
Trends in Microbiology @cp-trendsmicrobiol.bsky.social · 22/08/2026
The narrowing prokaryote–eukaryote divide reveals a complexity spectrum
dlvr.it
The narrowing prokaryote–eukaryote divide reveals a complexity spectrum
Cellular organisms can be divided into two basic types of cells: the prokaryotic cells of Bacteria and Archaea and the eukaryotic cells. The rapidly expanding knowledge of the diversity and ultrastructure of prokaryotic cells has revealed cellular intricacies that warrant a critical reappraisal of the profundity of the prokaryote–eukaryote divide.
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Pedro Leão @pedroleao.bsky.social · 21/08/2026
Virome DNA stable isotope probing reveals diverse active soil virus communities across ecosystem contexts. doi:10.1128/msystems.00733-26 sciflow.eu?paper=6
sciflow.eu
Virome DNA stable isotope probing reveals diverse active soil virus communities across ecosystem contexts.
mSystems · 12 Aug 2026 — Viruses are increasingly recognized as important players in soil ecosystems, but the active lytic virus populations that influence microbe-mediated terrestrial ecosystem proce...
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Reposted by Pedro Leão
ISEP @isepprotists.bsky.social · 21/08/2026
New #ISEPpapers! An Amoeboflagellate Halosymphonia sogumizoara gen. et sp. nov. (Tulamoebidae) in #Heterolobosea Enhances the Core #Halophilic Radiation of Eukaryotes onlinelibrary.wiley.com/doi/10.1111/... #Protists #Microbes #Amoebae #Extremophiles #ProtistsOnSky #Evolution
microscopic images of a single-celled amoeboid organism
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Pedro Leão @pedroleao.bsky.social · 20/08/2026
Ori-Finder-Arch: An Updated Web Server for the Annotation and Visualization of Archaeal Replication Origins doi:10.64898/2026.08.15.744077 sciflow.eu?paper=565306
sciflow.eu
Ori-Finder-Arch: An Updated Web Server for the Annotation and Visualization of Archaeal Replication Origins
bioRxiv · 19 Aug 2026 — Archaea are promising chassis organisms in biotechnology, and the accurate annotation of their chromosomal replication origins (oriCs) is the key to unlocking their full potent...
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Reposted by Pedro Leão
Rebecca J Hall @drrebeccajhall.bsky.social · 20/08/2026
Looking forward to a full day of microbial evolution today! I’ll be talking this morning about evolution of AMR from my work with @alanmcn1.bsky.social
Poster that reads ‘Microbial Evolution Network Ireland’
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Reposted by Pedro Leão
Mark A. Hanson @hansonmark.bsky.social · 20/08/2026
Three positions advertising in friendly lab on butterfly rearing & experiment support, image-based identification platform development, developing transgenic insects. PDRA/PDRF (2x): careers.exeter.ac.uk/vacancies/13... careers.exeter.ac.uk/vacancies/13... GRA: careers.exeter.ac.uk/vacancies/13...
careers.exeter.ac.uk
Postdoctoral Research Associate / Fellow in Cornwall | University of Exeter
View details and apply for this Postdoctoral Research Associate / Fellow vacancy in Cornwall. Postdoctoral Research Associate or Fellow This Advanced Research and Innovation Agency funded full...
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Pedro Leão @pedroleao.bsky.social · 20/08/2026
Genome-resolved metagenomics reveals microbial potential for CO2 and CH₄ emissions in prawn ponds doi:10.64898/2026.08.18.745432 sciflow.eu?paper=560374
sciflow.eu
Genome-resolved metagenomics reveals microbial potential for CO2 and CH₄ emissions in prawn ponds
bioRxiv · 18 Aug 2026 — Recognizing the central role of microorganisms in greenhouse gas (GHG) cycling in aquaculture systems, we provide a genome- and gene-centric perspective on the metabolic potent...
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Pedro Leão @pedroleao.bsky.social · 19/08/2026
A eukaryotic-like phospholipid transfer protein conserved in Asgard archaea Wow! 👀 doi:10.1101/2025.05.16.653879 sciflow.eu?paper=560333
sciflow.eu
A eukaryotic-like phospholipid transfer protein conserved in Asgard archaea
bioRxiv · 17 Aug 2026 — Eukaryotic cells rely on conserved lipid transfer proteins (LTPs) to shuttle insoluble phospholipids between membranes and support organelle proliferation. Because cells lackin...
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