Tommi Mäklin
@themaklin.bsky.social
📤 1413
📥 409
📝 114
I do statistics, bacterial (meta)genomics and bioinformatics software development.
reposted by
Tommi Mäklin
Johanna von Wachsmann
9 days ago
🧬 New preprint! We clustered 5.6 million bacterial genomes into genomically cohesive units (GCUs) 500× faster than existing tools. (In just 14 hours, 16.5 GB RAM using 48 CPUs). 🦠🐙Meet gemsparcl 💎✨!
www.biorxiv.org/content/10.6...
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Tommi Mäklin
Paul Medvedev
about 2 months ago
This is now published in Genome Research (
doi.org/10.1101/gr.2...
). Thank you everyone for your feedback and also the anonymous reviewers who helped to greatly improve the paper. I hope this becomes a useful resource for the community.
add a skeleton here at some point
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Tommi Mäklin
Rob Edwards
3 months ago
Want to annotate a bacterial genome with structures?
@oschwengers.bsky.social
bakta and
@gbouras13.bsky.social
phold got together, and the result is Baktfold: protein annotation across the microbial tree of life using structures
www.biorxiv.org/content/10.6...
#phagesky
#microsky
#microbiomesky
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https://www.biorxiv.org/content/10.64898/2026.03.31.715528v1
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someone registered a codeberg account just to make a pull request updating a dependency in a side project that I haven't worked on in nearly a year and nobody uses. respect.
3 months ago
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Tommi Mäklin
Melissa Barber
3 months ago
Today, MSF is going public with something we've been fighting behind closed doors for months: Gilead will not sell us their new HIV drug, lenacapavir. The sticking point isn't even price, they just refuse to sell. Open letter linked + explainer 🧵1/
www.doctorswithoutborders.org/latest/gilea...
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Gilead refuses to sell groundbreaking HIV prevention drug to MSF
Blocking humanitarian organizations from accessing a medical breakthrough puts vulnerable people across the world in danger.
https://www.doctorswithoutborders.org/latest/gilead-refuses-sell-groundbreaking-hiv-prevention-drug-msf
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Tommi Mäklin
Igor Martayan
3 months ago
A quick rant on people vibe-translating our Rust libraries to other languages That's the second time in a week that I see new bioinformatics tools with a vibe-coded translation of our Rust libraries to C/C++. I have two major issues with that:
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Tommi Mäklin
Rebecca A. Gladstone
3 months ago
We created a database compatible with Kaptive3 of 90 distinct capsule (K) loci; 66% represented novel K-loci that did not correspond to the known phenotypic K-antigens. Give it a whirl, and get in touch to have novel K-loci added to the DB
github.com/rgladstone/E...
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EC-K-typing/phandango at main · rgladstone/EC-K-typing
E. coli K-antigen group 2 and group 3 typing database - rgladstone/EC-K-typing
https://github.com/rgladstone/EC-K-typing/tree/main/phandango
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Tommi Mäklin
Rebecca A. Gladstone
3 months ago
Now published! 'Identification of transporter-dependent capsular loci associated with the invasive potential of Escherichia coli'
www.nature.com/articles/s41...
insights below.....
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https://www.nature.com/articles/s41564-026-02283-w
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Tommi Mäklin
Alan McNally
3 months ago
Am stoked and thrilled that our latest paper is now out. A longitudinal study of invasive E. coli from children in the Netherlands over 50 years
www.sciencedirect.com/science/arti...
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Lineage dynamics of invasive Escherichia coli isolates in the Netherlands from 1975 to 2021: a retrospective longitudinal genomic analysis
Escherichia coli is a common cause of invasive infections such as bloodstream and cerebrospinal fluid infections in neonates. Strains positive for the…
https://www.sciencedirect.com/science/article/pii/S2666524725002289
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wow this really looks like a mountain of LLM generated reviews and/or proposals
add a skeleton here at some point
4 months ago
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maybe phd programs should skip the research training part and train people to write applications, instead, since that's all you'll have time to do anyway
add a skeleton here at some point
5 months ago
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Tommi Mäklin
Alessandro Gozzi
5 months ago
With a +64% increase in MSCA 2025 scholarship applications, funding cut-offs reached absurd levels. (e.g. a score of 96/100 remained unfunded, got news today from a candidate I sponsored). When rating is this compressed, a lottery among top-rated proposals deserves serious consideration I think.
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Tommi Mäklin
Sam Horsfield
5 months ago
At long last, my final PhD chapter is out: we developed a novel evolutionary simulator of bacterial pangenomes, Pansim, fitting it to data from >600K genomes using a likelihood-free framework, PopPUNK-mod, to explore neutral and adaptive pangenome dynamics
www.biorxiv.org/content/10.6...
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https://www.biorxiv.org/content/10.64898/2026.02.04.703695v1
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Tommi Mäklin
naturepoker
5 months ago
Bioinformatics orphanage - repository of bioinformatics packages that are no longer maintained upstream but still have users, or is a dependency for other more frequently used packages. I think this is a fun idea, and potentially an important one for the future...💻🧬
github.com/bioinformati...
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Bioinformatics Orphanage
A place for bioinformatics software that has been abandoned - Bioinformatics Orphanage
https://github.com/bioinformaticsorphanage
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Tommi Mäklin
Rob Patro
5 months ago
Very excited about this latest work led by
@jermp.bsky.social
! Since it's initial release, SSHash has served as the basis for several other tools (Fulgor, piscem, etc.). It was already very fast. It is now *substantially* faster!
www.biorxiv.org/content/10.6...
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https://www.biorxiv.org/content/10.64898/2026.01.21.700884v1
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Tommi Mäklin
Rebecca A. Gladstone
5 months ago
"Machine learning-based lineage prediction from antimicrobial susceptibility testing phenotypes for Escherichia coli sequence type 131 clade C surveillance across infection types" Spoiler: the MDR ST131-C is pervasive in UTIs, underlying BSI trends.
doi.org/10.1099/mgen...
@microbiologysociety.org
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https://doi.org/10.1099/
[email protected]
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Tommi Mäklin
ASM
6 months ago
How does E. coli age? According to this
#mBio
study, the the decisive factor driving growth decline in E. coli is not the presence of protein aggregates, but the fraction of the intracellular space they occupy. Learn more:
asm.social/2KZ
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Tommi Mäklin
Olaya Rendueles
6 months ago
📣 preprint alert! We sampled
#klebsiella
isolates from💩 patients when they entered the hospital & 🩸 after development of infection. 🎯 We tracked phenotypic changes & correlate them w genotypic changes.
@klebclub.bsky.social
-in collab with Clermont-Ferrand lab
#microsky
🧵
doi.org/10.64898/202...
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Within-host evolution of Klebsiella spp. from intestinal carriage to bacteremia
Gut colonization by the Gram-negative bacillus Klebsiella pneumoniae is a significant risk factor for extra-intestinal infections. However, the mechanisms by which this opportunistic pathogen causes d...
https://doi.org/10.64898/2026.01.05.697662
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Tommi Mäklin
Cameron Thrash
6 months ago
The changing roles of Escherichia coli
www.nature.com/articles/s41...
#jcampubs
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The changing roles of Escherichia coli - Nature Microbiology
Richard Lenski traces the legacy of Escherichia coli and how science is evolving to use this model organism in new ways.
https://www.nature.com/articles/s41564-025-02230-1
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Tommi Mäklin
Zamin Iqbal
6 months ago
"..based on a common wavefront design that can be adapted to support a variety of dynamic programming algorithms: local, global, and semi-global alignment of genomic and protein sequences with a variety of commonly used scoring schemes" from
@martinsteinegger.bsky.social
andco
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Tommi Mäklin
Onisillos
6 months ago
"Ethical standards do not become optional because the participants are African."
bktitanji.substack.com/p/how-unethi...
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How Unethical Research Seeds Medical Mistrust
The absence of equipoise can turn research into harm
https://bktitanji.substack.com/p/how-unethical-research-seeds-medical
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Tommi Mäklin
Antoine Limasset
6 months ago
Preprint Alert! With
@tmthrz.bsky.social
and
@rayanchikhi.bsky.social
we aim to tackle practical unitigs compression! A thread:
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Tommi Mäklin
Ragnar {Groot Koerkamp}
7 months ago
If you ever need to fuzzy search some DNA, sassy is your tool. Please spread the word; I think many people just outside my own circle could benefit from this :) cc
@rickbitloo.bsky.social
github.com/RagnarGrootK...
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Tommi Mäklin
bioRxiv Evolutionary Biology
7 months ago
Mapping the evolutionary path towards multi-drug resistance in the pandemic Escherichia coli ST131 lineage
https://www.biorxiv.org/content/10.64898/2025.12.08.692488v1
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Tommi Mäklin
Arwyn Edwards
7 months ago
Lovely to feature alongside the brilliant Birgit Sattler & Tom Battin in this story about life in Earth's dying ice.
www.the-scientist.com/the-ice-is-a...
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The Ice is Alive: Uncovering the Vanishing World of Glacial Microbes
Glaciers are flush with microbial life. But, as climate change speeds glacial melting, scientists rush to establish microbial biobanks to preserve them.
https://www.the-scientist.com/the-ice-is-alive-uncovering-the-vanishing-world-of-glacial-microbes-73825
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Tommi Mäklin
Sara Mitri
7 months ago
Amazing dataset describing the metabolic profiles of 66 E. coli transporter knockouts by
@sulheim.bsky.social
with Peter Doubleday and
@nzamboni.bsky.social
. The tool, set up by
@lambdapp.bsky.social
and Eric Ulrich allows you to explore for yourself. Enjoy! Pre-print here:
doi.org/10.1101/2025...
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Tommi Mäklin
Frances Yap
7 months ago
Colibactin-DNA interstrand crosslinks structure reveals DNA-damaging acitivity of colibactin that is linked to colorectal cancer
#MicroSky
www.science.org/doi/10.1126/...
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The specificity and structure of DNA cross-linking by the gut bacterial genotoxin colibactin
Accumulating evidence has connected the chemically unstable, DNA-damaging gut bacterial natural product colibactin to colorectal cancer, including the identification of mutational signatures that are ...
https://www.science.org/doi/10.1126/science.ady3571?utm_source=sfmc&utm_medium=email&utm_content=alert&utm_campaign=SCIeToc&et_rid=589019734&et_cid=5811313
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Tommi Mäklin
Karel Břinda
7 months ago
1/9 Just out: k-mer indexes are the backbone of fast search in genomic data, but many degrade under small k, subsampling, or high diversity. With Ondřej Sladký and
@pavelvesely.bsky.social
we asked: can we build one that works efficiently for any k-mer set?
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Tommi Mäklin
Roland Faure
7 months ago
Preprint out! Check out our new long-read metagenomic SNP-caller, SNooPy 😀. Work with Chris Quince. Thread 🧵 👉
www.biorxiv.org/content/10.6...
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Tommi Mäklin
Aude Bernheim
7 months ago
🧬🛡️How are new immune mechanisms created? We show how Lamassu antiphage system, originated from a DNA-repair complex and evolved into a compact and modular immune machine, wt Dinshaw Patel lab in
@pnas.org
. 👏
@matthieu-haudiquet.bsky.social
, Arpita Chakravarti & all authors!
doi.org/10.1073/pnas...
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Tommi Mäklin
bioRxiv Bioinfo
7 months ago
Optimized k-mer search across millions of bacterial genomes on laptops
https://www.biorxiv.org/content/10.1101/2025.11.23.690050v1
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Tommi Mäklin
Eva Heinz
7 months ago
If you're about to push these last manuscripts before wrapping up 2025, remider that our MGen Eukaryotic collection
@microbiologysociety.org
is open & growing;
#Protists
#Parasites
#Fungi
; friend or foe; all welcome 😊
#MicroSky
#IDSky
#Protistsonsky
🧬💻
www.microbiologyresearch.org/content/micr...
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Microbial Genomics of Eukaryotes | Microbiology Society
With technological advances like single-cell sequencing and long-read sequence techniques continually improving, allowing the full resolution of increasingly complex highly repetitive genomes, and wit...
https://www.microbiologyresearch.org/content/microbial-genomics-of-eukaryotes
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Tommi Mäklin
Josie Bryant
7 months ago
Really pleased to share the first paper to come out of the lab. We found that hospital patients were frequently colonised with P. aeruginosa and that the same clone was shared between the gut and the lung. The phylogenies indicate that the clones moved from lung->gut
www.nature.com/articles/s41...
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High frequency body site translocation of nosocomial Pseudomonas aeruginosa - Nature Communications
Here, the authors report within-host diversity and body site translocation dynamics in hospital samples of Pseudomonas aeruginosa and reveal that body site sharing was likely due to within-patient tra...
https://www.nature.com/articles/s41467-025-66088-x
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Tommi Mäklin
Emmanuele Severi
7 months ago
#microsky
#phagesky
#phage
Anyone who’s tried deleting prophages in the lab by HR knows the difficulties of the task. Here we have an example of how HR-mediated natural transformation might hit the same hurdle in a more native context.
academic.oup.com/mbe/article/...
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Chromosomal Curing Drives an Arms Race Between Bacterial Transformation and Prophage
Abstract. Transformation occurs when bacteria import exogenous DNA via the competence machinery and integrate it into their genome through homologous recom
https://academic.oup.com/mbe/article/42/11/msaf259/8339874
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Tommi Mäklin
Michael Baym
7 months ago
Hot off the press! Our latest paper led by
@fernpizza.bsky.social
, understanding how plasmids evolve inside cells. These small, self-replicating DNA circles live inside bacteria and carry antibiotic resistance genes, but also compete with one another to replicate. 1/
www.science.org/doi/10.1126/...
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Intracellular competition shapes plasmid population dynamics
From populations of multicellular organisms to selfish genetic elements, conflicts between levels of biological organization are central to evolution. Plasmids are extrachromosomal, self-replicating g...
https://www.science.org/doi/10.1126/science.adx0665
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Tommi Mäklin
Ellinor Alseth
7 months ago
Very happy to see this piece out in
@plosbiology.org
, on the bacterial immune systems and microbial communities. It was a great team effort with Rafael Custodio,
@brockhurstlab.bsky.social
,
@brownlab.bsky.social
, and Edze Westra! 🦠🧫
#phagesky
#mevosky
journals.plos.org/plosbiology/...
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Bacterial immune systems as causes and consequences of microbiome structure
Bacterial immune systems have evolved in response to diverse molecular "parasites", yet their ecological roles remain poorly understood. This Essay explores how interactions between mobile genetic ele...
https://journals.plos.org/plosbiology/article?id=10.1371/journal.pbio.3003489
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Tommi Mäklin
John Lees
7 months ago
Happy to share our new AMR resource which has phenotypic AMR (usually MIC data) collected from publications and databases. This is paired with assemblies and annotations We're excited for users who might train new models, find phenotype/genotype mismatches, or any other use
add a skeleton here at some point
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Tommi Mäklin
Rob Patro
7 months ago
@wytamma.bsky.social
: so, it took a little bit of extra time (not the flight back from the CZI meeting), but I decided to just f#&$ing do it, and the basic code to build and parse with the auxiliary fastq index is working (
github.com/COMBINE-lab/...
). 1/2
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GitHub - COMBINE-lab/mim: A small, auxiliary index to massively improve parallel fastq parsing
A small, auxiliary index to massively improve parallel fastq parsing - COMBINE-lab/mim
https://github.com/COMBINE-lab/mim
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Tommi Mäklin
New preprint: we looked into production of the bacterial toxin colibactin and found that MDR E. coli from the global north have co-evolved with endemic colibactin producers, acquiring colibactin resistance genes before undergoing clonal expansions.
www.biorxiv.org/content/10.1...
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Co-evolution between colibactin production and resistance is linked to clonal expansions in Escherichia coli
Specific strains of Escherichia coli employ the polyketide synthase island to produce a metabolite called colibactin that is implicated in colorectal tumorigenesis via its genotoxic effect on human DN...
https://www.biorxiv.org/content/10.1101/2025.11.17.686825v1
7 months ago
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New preprint: we looked into production of the bacterial toxin colibactin and found that MDR E. coli from the global north have co-evolved with endemic colibactin producers, acquiring colibactin resistance genes before undergoing clonal expansions.
www.biorxiv.org/content/10.1...
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Co-evolution between colibactin production and resistance is linked to clonal expansions in Escherichia coli
Specific strains of Escherichia coli employ the polyketide synthase island to produce a metabolite called colibactin that is implicated in colorectal tumorigenesis via its genotoxic effect on human DN...
https://www.biorxiv.org/content/10.1101/2025.11.17.686825v1
7 months ago
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Tommi Mäklin
Bede Constantinides
7 months ago
My account's upload and bulk download access were terminated permanently in 2021 without explanation after I published *checksums* of GISAID genomes. GISAID and its SAB have since ignored a dozen emails seeking explanation. 4 yrs on, even Nextstrain has lost access. GISAID has rotted from its core.
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Tommi Mäklin
Cell Press
7 months ago
The link between the gut #microbiome and autism is not backed by science, researchers say. Read the full opinion piece in @cp-neuron.bsky.social:
spkl.io/63322AbxpA
#microbiome
@wiringthebrain.bsky.social
,
@statsepi.bsky.social
, &
@deevybee.bsky.social
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Tommi Mäklin
Steven Robbins
8 months ago
Metagenomics colleagues! I'm looking for studies where both Illumina and ONT sequencing were performed on the same samples from soil, human, ruminent, and other sample types for comparison. Bonus if those studies include PacBio data. Please help and share!
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Tommi Mäklin
Hetan Shah
7 months ago
‘Wider humanities & social science fields are underrepresented; communities… are often not centred; and these perspectives are often only included after key research decisions have already been made.’ Excellent ‘genomics in context’ call from
@wellcometrust.bsky.social
wellcome.org/research-fun...
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Genomics in Context Awards - Research Funding | Wellcome
These awards will support transdisciplinary teams to catalyse research discoveries at the intersection of genomics, humanities, social sciences and bioethics.
https://wellcome.org/research-funding/schemes/genomics-in-context-awards?utm_source=linkedin&utm_medium=o-wellcome
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Tommi Mäklin
Mark A. Hanson
8 months ago
The solutions of the past 3 decades have failed to change the incentives of
#PublishOrPerish
. As a result, researcher funding, time, control, and trust has been lost. The ONE CONSTANT in the wake of the serial crisis,
#PlanS
and
#OpenAccess
reform has been publish profit margins. 2/n
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Tommi Mäklin
Mark A. Hanson
8 months ago
We wrote the Strain on scientific publishing to highlight the problems of time & trust. With a fantastic group of co-authors, we present The Drain of Scientific Publishing: a 🧵 1/n Drain:
arxiv.org/abs/2511.04820
Strain:
direct.mit.edu/qss/article/...
Oligopoly:
direct.mit.edu/qss/article/...
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Tommi Mäklin
IMP
8 months ago
🌍Open call: Junior Group Leader positions! Join a world-class biomedical research institute at the heart of the Vienna BioCenter, where curiosity drives discovery. Lead your own lab, pursue bold ideas, and shape the future of science at the IMP:
www.imp.ac.at/career/open-...
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Tommi Mäklin
Ákos T Kovács
8 months ago
Strain displacement in microbiomes via ecological competition Cool
@natmicrobiol.nature.com
publication by
@erikbakkeren.bsky.social
@vit-pi.bsky.social
@meganleeny.bsky.social
@microscape.bsky.social
& Kevin Foster
www.nature.com/articles/s41...
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Strain displacement in microbiomes via ecological competition - Nature Microbiology
Mathematical modelling and experimental tests reveal principles that govern displacement of a resident strain by an invader in microbial communities.
https://www.nature.com/articles/s41564-025-02162-w
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Tommi Mäklin
Sam Horsfield
8 months ago
If you're interested in using pangenome graphs for comparative genomics, check out my webinar, part of EMBL-EBI's "Concepts, methods, and resources in pangenomics" series, available on-demand:
www.ebi.ac.uk/training/eve...
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Pangenome graphs as a new paradigm in comparative genomics -
Pangenome graphs as a new paradigm in comparative genomics -
https://www.ebi.ac.uk/training/events/pangenome-graphs-new-paradigm-comparative-genomics/
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