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Tyler Barnum

@tylerbarnumphd.bsky.social
120 followers 101 following 80 posts

Problem-solver in microbiology. SF, CA, USA. Ex-UC Berkeley, ex-Trace Genomics, ex-Cultivarium. Website: tylerbarnum.wordpress.com LinkedIn: linkedin.com/in/tylerbarnum

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Reposted by Tyler Barnum
Andrew Urquhart @starships-andrew.bsky.social · 24/09/2026
Another step in the #Starship story - they move via a circular intermediate. Helps explain how these elements horizontally transfer and means that we can modify them into transformation vectors (starmids). www.biorxiv.org/content/10.6...
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Tatta Bio @tattabio.bsky.social · 15/09/2026
The goal is to make microbial noncoding sequence space systematically searchable: discover an intergenic pattern, trace where it occurs across evolution, and use its conserved genomic context to generate hypotheses about function. Explore: seqhub.org Paper: tatta.bio/intergenic-sae
seqhub.org
SeqHub - The Home for Biological Sequences
SeqHub is a platform for exploring, annotating, and sharing biological sequences.
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Miss Salmonella @misssalmonella.bsky.social · 14/09/2026
I have an email alert for the word #plasmid. Yes, I'm that person. Today it brought me a paper comparing bacterial plasmids with #ecDNA in cancer (same tricks, different kingdoms). "A paper a day keeps ignorance away" 👇 www.nature.com/articles/s41...
nature.com
The shared evolutionary capacities of plasmids and extrachromosomal DNA - Nature Reviews Genetics
Plasmids in bacteria and extrachromosomal DNA in cancer both generate copy-number variation, alter gene expression and promote rapid adaptation. In this Perspective, Shaw and Henssen explore their sha...
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angela oliverio @oliverio.bsky.social · 11/09/2026
Just a **few** (aka 25!) more eukaryotic phyla discovered/proposed! www.biorxiv.org/content/10.6... Nice work @tedersoo.bsky.social @vmikk.bsky.social & all
biorxiv.org
Discovering 25 novel phyla that fill gaps in the eukaryotic tree of life
Protists play important roles in food chains and symbioses in soil and aquatic environments, displaying an enormous morphological and functional diversity[1][1],[2][2]. While most commonly found proti...
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BacDive @bacdive.bsky.social · 10/09/2026
🆕 BacDive #GeneSearch 🔎🧬: Find the strains containing a feature of interest❗ You can now use the new BacDive GeneSearch tool to globally search through the annotated genomic features of 19,597 prokaryotic strains 🦠🖥️. 👉 bacdive.dsmz.de/genesearch
Screenshot showing the new search mask
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Tatta Bio @tattabio.bsky.social · 04/09/2026
UniProt is where most researchers start when they want to understand a protein. As of today, prokaryotic entries there will show something new: genomic context, powered by SeqHub, right in the Sequence section of the page.
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Eos @eos.org · 03/09/2026
Read more about the Cooperative National Geologic Map at eos.org! eos.org/articles/new...
eos.org
New USGS Map Offers an Interactive Look at the Rocks Beneath Our Feet - Eos
The Cooperative National Geologic Map is an interactive tool that builds on both cutting-edge technology and decades of mapping by geoscientists.
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Tyler Barnum @tylerbarnumphd.bsky.social · 03/09/2026
IMHO BioRxiv/MedRxiv should try to unilaterally eliminate the for-profit science publishing industry, a la centralizing and automating peer review. I know we all love paywalls, delays, and inefficiencies, but can anyone justify Elsevier making over $2 billion/year in profits? 1/blog: wp.me/p7toHT-hF
wp.me
Opinion: BioRxiv/MedRxiv Should Do Peer Review
With great interest I am watching the creation of OpenRxiv ( an experimental project for BioRxiv and MedRxiv. My humble wish is that they move quickly to destroy the for-profit publishing indu…
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Tyler Barnum @tylerbarnumphd.bsky.social · 02/09/2026
100 years ago, Microbe Hunters was published
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Emily Gardner @emfurd.bsky.social · 01/09/2026
What does climate change have to do with antibiotic resistance? More than you might think. Spent quite some time reporting this article for @eos.org, and it's scary stuff! eos.org/features/ant...
eos.org
Antimicrobial Resistance Is Killing Millions. Climate Change Is Making It Worse. - Eos
A growing body of evidence indicates that factors such as rising temperatures and extreme weather are contributing to what some researchers have called “the slow pandemic.”
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Tatta Bio @tattabio.bsky.social · 13/08/2026
You can now explore DNA in SeqHub. Click into any gene or intergenic region within a contig to retrieve and copy nucleotides.
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Alex Crits-Christoph @acritschristoph.bsky.social · 06/08/2026
see also this work, which helps provide some helpful framing of how novel these phages are: www.biorxiv.org/content/10.6... tl;dr: I believe this work generates only marginally novel phages, which have only a moderate likelihood of working, that decreases the more novel they get.
biorxiv.org
Quantifying evolutionary novelty and design efficiency in generative genome design
Generative genome design models can now produce previously unobserved genome-length sequences, but assessing their capabilities is complicated by limitations in functional prediction. The ability to e...
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Tyler Barnum @tylerbarnumphd.bsky.social · 06/08/2026
Looks cool. We need more PhDs to start businesses that solve real problems NOW. You don't have to stay in your PhD thesis area, work in a celebrity lab, or have something developed. You have the ability to learn how to find an important unmet problem and create the lowest risk path to the solution
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Reposted by Tyler Barnum
Tatta Bio @tattabio.bsky.social · 06/08/2026
SeqHub protein searches now show which regions of a predicted structure are tied to specific biological functions or evolutionary patterns, powered by @biohub.org's SAE features. 🧵
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Homeworld Collective @homeworld.bsky.social · 04/08/2026
We surveyed 130+ people in climate biotech and interviewed 63 of them. We are excited to share the results: an interactive dashboard where you can explore the data, discover what we found, and develop your own conclusions. View the Climate Biotech Community Survey Dashboard: survey.homeworld.bio
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Tyler Barnum @tylerbarnumphd.bsky.social · 31/07/2026
Inspiration for the scientists working on soil: flags stained with soil from all 50 United States. (From Andy Goldsworthy's Red Flags).
Red flags
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Reposted by Tyler Barnum
Tobias Warnecke @tobiaswarnecke.bsky.social · 29/07/2026
Bacteriocins in archaea and archaeocins in bacteria. @romainstrock.bsky.social surveys the the exchange of molecular weaponry between archaea and bacteria. www.biorxiv.org/content/10.6...
biorxiv.org
Bacteriocins in archaea and archaeocins in bacteria
Archaea and bacteria routinely live side by side in microbial communities and must interact at least on occasion. Whether such cross-Domain interactions are dominated by mutual disregard, co-operation...
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Tyler Barnum @tylerbarnumphd.bsky.social · 13/07/2026
Zachary Sun is a great person and it’s been fun to watch his super affordable cell-free protein synthesis reactions absolutely LIGHT up with GFP. If you’re new to cell-free protein synthesis, Sepia Bio’s product is cheap- and good-enough you should think about what you can do with it.
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Alexander Lees @alexanderlees.bsky.social · 13/07/2026
Our new commentary rdcu.be/ftx6h in @natecoevo.nature.com written with folks from @inaturalist.bsky.social and @cornellbirds.bsky.social shows that use of AI to manipulate existing or create new wildlife images undermines the huge value of vast citizen science databases. 🌍🪰🪶 #Ornithology 🧵 1/10
rdcu.be
Citizen science platforms must mitigate against the threat of generative AI
Nature Ecology & Evolution - Citizen science platforms must mitigate against the threat of generative AI
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Tyler Barnum @tylerbarnumphd.bsky.social · 08/07/2026
Another barrier to genetic transformation of non-model microbes
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Evgenii Protasov @evgenii-protasov.bsky.social · 07/07/2026
Following the formal description of Caldifarcimen microaerophilum, the candidate phylum WOR-3 has been officially renamed Caldifarciminota within the kingdom Pseudomonadati #microbiology #NewSpecies #taxonomy #bacteria #MicroSky @microbiologysociety.org doi.org/10.1099/ijse...
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Tyler Barnum @tylerbarnumphd.bsky.social · 27/06/2026
To guess which uncultured bacteria are multicellular, and therefore trickier to culture, might be able to use BGC size as a proxy
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Daan Speth @daanspeth.bsky.social · 26/06/2026
I'm happy to announce the release of GlobDB r232! This version contains 346,233 bacterial and archaeal genomes, based on 26 datasets. More info globdb.org 🦠🖥️🧬
globdb.org
home | GlobDB
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Evgenii Protasov @evgenii-protasov.bsky.social · 25/06/2026
While some might argue that the golden age of Streptomyces in antibiotic discovery has passed, these organisms can still surprise us 🦠🧫🔬🤓 #microbiology #antibiotics #NaturalProducts #MicroSky @nature.com doi.org/10.1038/s415...
doi.org
A Streptomyces megacluster encodes synergistic biotin-targeting antibiotics - Nature
In Streptomyces spp., a conserved biosynthetic gene megacluster produces an arsenal of distinct antimicrobials that converge on bacterial biotin biosynthesis as a naturally evolved combination therapy...
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Tyler Barnum @tylerbarnumphd.bsky.social · 23/06/2026
NBD, only >4 years of microbial enrichment "After approximately 1.5 years of incubation... the enrichment cultures underwent two successive transfers at 4-month intervals... This subculturing process was repeated six times, each at 4-month intervals." Filters used to get the ultrasmall episymbiont.
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Reposted by Tyler Barnum
Cameron Thrash @jcamthrash.bsky.social · 16/06/2026
A pico-calorimeter for cellular metabolism and antimicrobial susceptibility testing www.pnas.org/doi/10.1073/... #jcampubs
pnas.org
A pico-calorimeter for cellular metabolism and antimicrobial susceptibility testing | PNAS
While methods exist to indirectly quantify the metabolism of biological systems, directly measuring metabolic rates in living samples remains chall...
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Reposted by Tyler Barnum
Evgenii Protasov @evgenii-protasov.bsky.social · 14/06/2026
Cultivation and molecular profiling reveal ammonia-oxidizing archaea as skin commensals #microbiology #archaea #ammonia #MicroSky @isme-microbes.bsky.social doi.org/10.1093/isme...
doi.org
Cultivation and molecular profiling reveal ammonia-oxidizing archaea as skin commensals
Abstract. Ammonia-oxidizing archaea (AOA) have repeatedly been detected with molecular methods on human skin, yet their persistence, physiological traits,
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Cameron Thrash @jcamthrash.bsky.social · 12/06/2026
MicrobioME: a CURE model for diverse microbiology laboratory classrooms journals.asm.org/doi/10.1128/... #jcampubs
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Randall Munroe @xkcd.com · 10/06/2026
Nostalgia Content xkcd.com/3256/
Comic. [Person in front of images of pogs, a Tamagotchi, and huge fungal tower over mossy ground.] PERSON: Who else remembers pogs? Tamagotchis? Vast forests of prototaxites towering over the mossy landscape as armored fish stir in the deep? [caption] Due to a database error, millennial nostalgia now includes a portion of the Early Devonian.
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openRxiv @openrxiv.bsky.social · 01/06/2026
Introducing openRxiv Labs! 🔬 Growing from the strong foundation of bioRxiv & medRxiv, Labs is an experimental space for working with collaborators to push the boundaries of open scientific communication. 👉 Check it out and learn more: openrxiv.org/openrxiv-lab... #OpenScience #Preprints #Scicomm
openrxiv.org
Launching openRxiv Labs - openRxiv
Over the last thirteen years, bioRxiv and medRxiv have grown into widely used infrastructure for rapid research sharing in biology and medicine. The reliability and researcher-first values that have d...
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Pilhofer Lab 🦠❄️🔬 @pilhoferlab.bsky.social · 01/06/2026
🛠️💉It's time for engineering contractile injection systems! @chipericson.bsky.social & @davidschaumann.bsky.social introduce programmable CIS - PROCIS, combining tail length control, non-native cargo loading, and cell retargeting all in one system! www.biorxiv.org/content/10.6... 🧵 1/5
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Susie Grigson @susiegriggo.bsky.social · 26/05/2026
Enter PHLEGM! 💻🧬 We developed the Phage Homomer Level Estimate and Generation Method to infer oligomeric state using AlphaFold-Multimer and interface quality assessment. We applied it to >22,000 sequences, revealing massive structural diversity. (2/n)
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Erol Akcay @akcay.theoretical.bio · 28/05/2026
Check out this exciting new paper in @currentbiology.bsky.social from my friend and collaborator @stephaniesimone.bsky.social’s lab on the genomics of novel rhizobium endosymbiosis www.cell.com/current-biol...
cell.com
The evolutionary genomics of novel endosymbiosis in wild rhizobia bacteria
Resolving early steps in how hosts and microbes unite in novel endosymbiosis is critical for understanding key evolutionary innovations and ecosystem functions. Montoya et al. reveal how mobile geneti...
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Rod Page @rdmpage.bsky.social · 27/05/2026
Interesting new tool to extract phylogenies from images (Tremble). It is crazy that this is still something we have to do. doi.org/10.1093/bioi...
doi.org
Treemble: a graphical tool to generate Newick strings from phylogenetic tree images
AbstractSummary. Phylogenetic trees are ubiquitous and central to biology, but most published trees are available only as visual diagrams and not in the ma
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Ben J Woodcroft @benjwoodcroft.bsky.social · 26/05/2026
Sandpiper 2 is up. 913,000 metagenomic community profiles w @ace-gtdb.bsky.social R232, 200k more than 1.0. sandpiper.qut.edu.au GlobDB coming. Thanks to @aroneys.bsky.social @thepatientwait.bsky.social @iambrettb.bsky.social and especially the new kid @nhstefan.bsky.social
sandpiper.qut.edu.au
sandpiper
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Tyler Barnum @tylerbarnumphd.bsky.social · 20/05/2026
Lots of folks don't know that certain phage can infect bacteria across taxonomic orders
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Vijini Mallawaarachchi @vijinim.bsky.social · 08/05/2026
🎉 Excited to share that our paper, “agtools: A Software Framework to Manipulate Assembly Graphs”, has been accepted in Bioinformatics Advances. (1/n) 🔗 GitHub: github.com/Vini2/agtools 📄 Paper: academic.oup.com/bioinformati... #bioinformatics #genomics #openscience
academic.oup.com
agtools: A Software Framework to Manipulate Assembly Graphs
AbstractMotivation. Assembly graphs are a fundamental data structure used by genome and metagenome assemblers to represent sequences and their overlap info
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MichaelMcMurray lab @mcmurraylab.bsky.social · 22/04/2026
Doing the periodic cleaning of used plasmid miniprep columns and realized in honor of Earth Day it may be worth reminding you molecular biologists: Plasmid miniprep columns can be cleaned and reused essentially indefinitely! Just add 1 M HCl, soak overnight and wash 3x w/ water. Save $ and plastic
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Cameron Thrash @jcamthrash.bsky.social · 05/05/2026
A droplet microfluidic-based platform for enhanced DNA delivery in non-model organisms www.biorxiv.org/content/10.6... #jcampubs
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Tyler Barnum @tylerbarnumphd.bsky.social · 01/05/2026
Every microbiologist needs a photo this cool. Media is cheap - grow your microbe in giant bags and stand in front of it
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Alex Crits-Christoph @acritschristoph.bsky.social · 10/04/2026
An Asgard archaeon from a modern analog of ancient microbial mats (Current Biology) Beautiful microscopy of an Asgard archaeon, in the same family as Lokiarchaea, in syntrophy with a sulfate-reducing bacteria Very very nice paper we saw in preprint form: www.cell.com/current-biol...
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Tyler Barnum @tylerbarnumphd.bsky.social · 09/04/2026
Biology labs looking to reduce costs or increase throughput should consider switching from kits for DNA and RNA purification and size selection (e.g. plasmid or PCR products) to… magnetic beads. The BOMB platform (Oberacker 2019, 338 citations) claims 10-20x cost reduction.
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Tatta Bio @tattabio.bsky.social · 08/04/2026
You can now run a multiple sequence alignment directly on your SeqHub search results. Once the alignment runs, conserved regions are mapped onto the 3D structure of your query protein. Explore results in SeqHub or download as an a3m file.
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Tyler Barnum @tylerbarnumphd.bsky.social · 08/04/2026
Read this!
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Tyler Barnum @tylerbarnumphd.bsky.social · 07/04/2026
Methane in agriculture is a critical, tractable climate problem of the next 5-10 years (immediately), and if your organization is in the climate space, take a look:
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Dr. Katharine Dickson @metaomicsnerd.bsky.social · 06/04/2026
Recent work: 1) I authored a roadmap for federal enteric methane regulation, publishing in the Journal of Science Policy and Governance this June. 2) I am the enteric and modeling tech lead for Climate Action California’s response to CARB’s January RFI on SB 1383’s dairy and livestock provisions.
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Vivek Mutalik @vivekmutalik.bsky.social · 03/04/2026
📣Huge preprint 🔔 Today we share something our group has been working toward for a long time, led by @lucasmoriniere.bsky.social We asked can we predict which receptor a phage targets from its genome sequence alone? For most phages, we couldn’t. So Lucas set out to do something I had only dreamed of.
Phage receptor prediction from genome sequencing alone. Bacterial receptor (blue) interacting with phage proteins (purple) is shown here
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Tyler Barnum @tylerbarnumphd.bsky.social · 01/04/2026
What if universities used undergraduates to make biological reagents? No, I don’t mean melting the students. I mean training people in biomanufacturing to reduce research costs. Thread + diagram, hopefully thought-provoking
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Tatta Bio @tattabio.bsky.social · 31/03/2026
SeqHub now surfaces Rfam annotations directly in the genomic neighborhood view: family name, accession, length, and a link out to the Rfam entry.
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Tyler Barnum @tylerbarnumphd.bsky.social · 27/03/2026
Much of the most interesting microbiology out there takes a ~really~ long time to study with today's methods
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