Britt Abrahamson
@brittabrahamson.bsky.social
Postdoctoral Fellow | Zakem Lab | Carnegie Science
Microbial Ecophysiology (Nitrification & Methanogenesis) |
Surf, hike, concerts, read
Microbial Ecophysiology (Nitrification & Methanogenesis) |
Surf, hike, concerts, read
Pinned
Long overdue updates:
I defended my PhD at the end of May and can't thank everyone who supported me enough! Special thanks to Mari Winkler, Wei Qin, and @pietercandry.bsky.social for their supervision!
Also, I'm excited to be starting my postdoc with Emily Zakem @carnegiescience.bsky.social today!
I defended my PhD at the end of May and can't thank everyone who supported me enough! Special thanks to Mari Winkler, Wei Qin, and @pietercandry.bsky.social for their supervision!
Also, I'm excited to be starting my postdoc with Emily Zakem @carnegiescience.bsky.social today!
Reposted by Britt Abrahamson
Cosmopolitan marine bacteria facilitate a vast phytoplankton-derived sulfonate-based carbon flow through sulfoquinovosidases www.nature.com/articles/s41... #jcampubs 🌊
December 5, 2025 at 6:39 PM
Cosmopolitan marine bacteria facilitate a vast phytoplankton-derived sulfonate-based carbon flow through sulfoquinovosidases www.nature.com/articles/s41... #jcampubs 🌊
Incredible!
An Asgard Archaeon (Lokiarchaeum ossiferum) growing and retracting its arms
December 5, 2025 at 8:23 PM
Incredible!
Reposted by Britt Abrahamson
Fresh from our group, a new role for oxygen production in ammonia-oxidizing archaea:
Oxygen production as an electron overflow pathway in ammonia-oxidizing archaea
Congrats to Thomas Pribasnig for this great work!
Check it out here:
www.biorxiv.org/content/10.6...
Oxygen production as an electron overflow pathway in ammonia-oxidizing archaea
Congrats to Thomas Pribasnig for this great work!
Check it out here:
www.biorxiv.org/content/10.6...
December 5, 2025 at 12:42 PM
Fresh from our group, a new role for oxygen production in ammonia-oxidizing archaea:
Oxygen production as an electron overflow pathway in ammonia-oxidizing archaea
Congrats to Thomas Pribasnig for this great work!
Check it out here:
www.biorxiv.org/content/10.6...
Oxygen production as an electron overflow pathway in ammonia-oxidizing archaea
Congrats to Thomas Pribasnig for this great work!
Check it out here:
www.biorxiv.org/content/10.6...
Non-canonical resource allocation in heterotrophically growing Thermoanaerobacter kivui |
doi.org/10.1038/s414...
Study identified a proteome allocation strategy inconsistent with the growth laws of E. coli and points towards variety in resource allocation strategies.
doi.org/10.1038/s414...
Study identified a proteome allocation strategy inconsistent with the growth laws of E. coli and points towards variety in resource allocation strategies.
Non-canonical resource allocation in heterotrophically growing Thermoanaerobacter kivui - Nature Communications
Proteome allocation to anabolic and catabolic functions is significantly regulated by growth rate in the model bacterium Escherichia coli. By contrast, this article shows that proteome allocation is o...
doi.org
December 5, 2025 at 3:19 AM
Non-canonical resource allocation in heterotrophically growing Thermoanaerobacter kivui |
doi.org/10.1038/s414...
Study identified a proteome allocation strategy inconsistent with the growth laws of E. coli and points towards variety in resource allocation strategies.
doi.org/10.1038/s414...
Study identified a proteome allocation strategy inconsistent with the growth laws of E. coli and points towards variety in resource allocation strategies.
Reposted by Britt Abrahamson
Microflora Danica: What can you learn from collecting and sequencing 10,000+ samples from a single country? Check out our new paper in @nature.com to find out. Incredible work led by Caitlin Singleton, Thomas B. N. Jensen, and Mads Albertsen from @aau.dk. 🦠🧫🧬
www.nature.com/articles/s41...
www.nature.com/articles/s41...
The Microflora Danica atlas of Danish environmental microbiomes - Nature
Microflora Danica—an atlas of Danish environmental microbiomes—reveals that although human-disturbed habitats have high alpha diversity, species reoccur, revealing hidden homogeneity.
www.nature.com
December 3, 2025 at 8:50 PM
Microflora Danica: What can you learn from collecting and sequencing 10,000+ samples from a single country? Check out our new paper in @nature.com to find out. Incredible work led by Caitlin Singleton, Thomas B. N. Jensen, and Mads Albertsen from @aau.dk. 🦠🧫🧬
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Reposted by Britt Abrahamson
Study shows how uncultivated nitrifiers dominate our soil and farming shapes microbial diversity. www.nature.com/articles/s41...
December 3, 2025 at 4:10 PM
Study shows how uncultivated nitrifiers dominate our soil and farming shapes microbial diversity. www.nature.com/articles/s41...
Reposted by Britt Abrahamson
A collaborative project that began with the Osaka Expo has just been released as a preprint!
Here, we show Promethearchaeota (Asgard archaea) “moving” under anaerobic conditions.
The videos capturing this unique behavior are so fascinating you can watch endlessly.
www.biorxiv.org/content/10.1...
Here, we show Promethearchaeota (Asgard archaea) “moving” under anaerobic conditions.
The videos capturing this unique behavior are so fascinating you can watch endlessly.
www.biorxiv.org/content/10.1...
Dynamic protrusions mediate unique crawling motility in Asgard Archaea (Promethearchaeota)
Crawling motility is a hallmark of eukaryotic cells and requires a dynamic actin cytoskeleton, regulated adhesion, and spatially organized signalling pathways1–3. Asgard archaea (phylum Promethearchae...
www.biorxiv.org
December 2, 2025 at 11:52 PM
A collaborative project that began with the Osaka Expo has just been released as a preprint!
Here, we show Promethearchaeota (Asgard archaea) “moving” under anaerobic conditions.
The videos capturing this unique behavior are so fascinating you can watch endlessly.
www.biorxiv.org/content/10.1...
Here, we show Promethearchaeota (Asgard archaea) “moving” under anaerobic conditions.
The videos capturing this unique behavior are so fascinating you can watch endlessly.
www.biorxiv.org/content/10.1...
Reposted by Britt Abrahamson
Interested in #nitrification? Check-out this new paper driven by the #MichaelPester group focussing on nitrification-driven chemolithoautotrophy in oligotrophic lake hypolimnia. Freshwater AOA contribute only a minor part to dark DIC fixation in these systems.
academic.oup.com/ismecommun/a...
academic.oup.com/ismecommun/a...
Spatiotemporal and temperature-dependent disconnect between ammonia oxidation and dark DIC fixation in deep oligotrophic Lake Constance
Abstract. Deep oligotrophic lakes hold over 80% of global lake water. In their hypolimnion, ammonia oxidation (the first step of nitrification) and non-pho
academic.oup.com
December 2, 2025 at 1:05 PM
Interested in #nitrification? Check-out this new paper driven by the #MichaelPester group focussing on nitrification-driven chemolithoautotrophy in oligotrophic lake hypolimnia. Freshwater AOA contribute only a minor part to dark DIC fixation in these systems.
academic.oup.com/ismecommun/a...
academic.oup.com/ismecommun/a...
Reposted by Britt Abrahamson
Marine Cold Seep ANME‐2/SRB Consortia Produce Their Lipid Biomass From Inorganic Carbon enviromicro-journals.onlinelibrary.wiley.com/doi/10.1111/... #jcampubs
Marine Cold Seep ANME‐2/SRB Consortia Produce Their Lipid Biomass From Inorganic Carbon
Lipid-stable isotope probing (SIP) experiments in Astoria Canyon sediments revealed that both ANME-2 and SRB primarily assimilate dissolved inorganic carbon (DIC or HCO3-), not methane, into biomass....
enviromicro-journals.onlinelibrary.wiley.com
December 2, 2025 at 1:51 PM
Marine Cold Seep ANME‐2/SRB Consortia Produce Their Lipid Biomass From Inorganic Carbon enviromicro-journals.onlinelibrary.wiley.com/doi/10.1111/... #jcampubs
Reposted by Britt Abrahamson
Large methane oxidation across an oxygen gradient in Baltic Sea deep waters aslopubs.onlinelibrary.wiley.com/doi/10.1002/... #jcampubs
December 1, 2025 at 2:36 PM
Large methane oxidation across an oxygen gradient in Baltic Sea deep waters aslopubs.onlinelibrary.wiley.com/doi/10.1002/... #jcampubs
Reposted by Britt Abrahamson
Pelagic Methane Cycling in the Arabian Sea Oxygen Minimum Zone agupubs.onlinelibrary.wiley.com/doi/10.1029/... #jcampubs 🌊
December 1, 2025 at 2:22 PM
Pelagic Methane Cycling in the Arabian Sea Oxygen Minimum Zone agupubs.onlinelibrary.wiley.com/doi/10.1029/... #jcampubs 🌊
Reposted by Britt Abrahamson
🚨NEW paper: Benchmarking Hi-C for virus–host inference
journals.plos.org/plosbiology/...
A clear baseline for anyone mapping virus–host interactions that establishes robust, benchmarked thresholds for Hi-C linkages.
Key results: 👇
journals.plos.org/plosbiology/...
A clear baseline for anyone mapping virus–host interactions that establishes robust, benchmarked thresholds for Hi-C linkages.
Key results: 👇
Benchmarking with synthetic communities provides a baseline for virus-host inferences from Hi-C proximity linking
Virus discovery has accelerated but linking viruses to hosts remains challenging. This study uses synthetic microbiomes to optimize and benchmark Hi-C for virus-host linkage inference, and applies thi...
journals.plos.org
November 21, 2025 at 7:31 PM
🚨NEW paper: Benchmarking Hi-C for virus–host inference
journals.plos.org/plosbiology/...
A clear baseline for anyone mapping virus–host interactions that establishes robust, benchmarked thresholds for Hi-C linkages.
Key results: 👇
journals.plos.org/plosbiology/...
A clear baseline for anyone mapping virus–host interactions that establishes robust, benchmarked thresholds for Hi-C linkages.
Key results: 👇
Reposted by Britt Abrahamson
Glad to see this beautful work from Daniel Amador-Noguez’s group is out now. journals.asm.org/doi/10.1128/...
Thermodynamics shapes the in vivo enzyme burden of glycolytic pathways | mBio
Cells regulate metabolic fluxes to balance energy production, biosynthesis, and the
efficient use of limited resources, including the finite capacity for synthesizing
and maintaining metabolic enzymes...
journals.asm.org
November 25, 2025 at 2:14 AM
Glad to see this beautful work from Daniel Amador-Noguez’s group is out now. journals.asm.org/doi/10.1128/...
Reposted by Britt Abrahamson
Wonderful to see a writeup of our recent permafrost work out in @natclimate.nature.com ! "Microbes wake up"
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Microbes wake up - Nature Climate Change
Nature Climate Change - Microbes wake up
www.nature.com
November 24, 2025 at 6:10 PM
Wonderful to see a writeup of our recent permafrost work out in @natclimate.nature.com ! "Microbes wake up"
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Reposted by Britt Abrahamson
Our paper describing the GlobDB is now published in @bioinfoadv.bsky.social
doi.org/10.1093/bioa...
The GlobDB is the largest species dereplicated genome database currently available, containing 306,260 species representatives.
More information on globdb.org 1/5
🖥️🧬🦠
doi.org/10.1093/bioa...
The GlobDB is the largest species dereplicated genome database currently available, containing 306,260 species representatives.
More information on globdb.org 1/5
🖥️🧬🦠
GlobDB: a comprehensive species-dereplicated microbial genome resource
AbstractMotivation. Over the past years, substantial numbers of microbial species’ genomes have been deposited outside of conventional INSDC databases.Resu
doi.org
November 21, 2025 at 4:21 PM
Our paper describing the GlobDB is now published in @bioinfoadv.bsky.social
doi.org/10.1093/bioa...
The GlobDB is the largest species dereplicated genome database currently available, containing 306,260 species representatives.
More information on globdb.org 1/5
🖥️🧬🦠
doi.org/10.1093/bioa...
The GlobDB is the largest species dereplicated genome database currently available, containing 306,260 species representatives.
More information on globdb.org 1/5
🖥️🧬🦠
Reposted by Britt Abrahamson
📢 Extra, extra: our collaborative study on trace gas oxidizers in a warmer soil is out as a preprint
www.biorxiv.org/content/10.1...
Big thanks to @thanh0109.bsky.social @bobpmleung.bsky.social @wutkowska.bsky.social @andreasrichter.bsky.social @mathildebio.bsky.social @greening.bsky.social
...
www.biorxiv.org/content/10.1...
Big thanks to @thanh0109.bsky.social @bobpmleung.bsky.social @wutkowska.bsky.social @andreasrichter.bsky.social @mathildebio.bsky.social @greening.bsky.social
...
Soil trace gas oxidizers divergently respond to short- and long-term warming
The upland soil microbiome is dominated by aerobic bacteria that oxidize atmospheric trace gases, including CO, H2, and CH4. As a result, soils are the largest biological sink for these climate-active...
www.biorxiv.org
November 19, 2025 at 9:02 AM
📢 Extra, extra: our collaborative study on trace gas oxidizers in a warmer soil is out as a preprint
www.biorxiv.org/content/10.1...
Big thanks to @thanh0109.bsky.social @bobpmleung.bsky.social @wutkowska.bsky.social @andreasrichter.bsky.social @mathildebio.bsky.social @greening.bsky.social
...
www.biorxiv.org/content/10.1...
Big thanks to @thanh0109.bsky.social @bobpmleung.bsky.social @wutkowska.bsky.social @andreasrichter.bsky.social @mathildebio.bsky.social @greening.bsky.social
...
Reposted by Britt Abrahamson
Clone-FISH paper out: Manuscript/resource alert #microsky 🦠 We present a collection of 30 E. coli (CloneFISH) cultures, each carrying a plasmid for the heterologous expression of a (near) full-length 16S rRNA gene from one of 30 lineages of archaea, including 17 yet uncultured ones.
November 17, 2025 at 2:36 PM
Clone-FISH paper out: Manuscript/resource alert #microsky 🦠 We present a collection of 30 E. coli (CloneFISH) cultures, each carrying a plasmid for the heterologous expression of a (near) full-length 16S rRNA gene from one of 30 lineages of archaea, including 17 yet uncultured ones.
Reposted by Britt Abrahamson
Nice end of the week Sivan, @annajwallenius.bsky.social et al online. Cheers 🎉🎉🎉Pathway-specific bulk and clumped isotope signatures of #methane production in marine sediment incubations. #nessc @ribesresearch.bsky.social @erc.europa.eu
link.springer.com/article/10.1...
link.springer.com/article/10.1...
Pathway-specific bulk and clumped isotope signatures of methane production in marine sediment incubations - Biogeochemistry
Biogenic methane, the largest contributor to atmospheric methane, is produced via different microbial methanogenic pathways, depending on the substrates and type of methanogens. Stable carbon and hydr...
link.springer.com
November 14, 2025 at 5:32 PM
Nice end of the week Sivan, @annajwallenius.bsky.social et al online. Cheers 🎉🎉🎉Pathway-specific bulk and clumped isotope signatures of #methane production in marine sediment incubations. #nessc @ribesresearch.bsky.social @erc.europa.eu
link.springer.com/article/10.1...
link.springer.com/article/10.1...
Reposted by Britt Abrahamson
Key role of hydrogen in regulating hydrogenases and the reductive TCA cycle in a thermophilic, autotrophic sulfur-reducing bacterium journals.asm.org/doi/full/10.... #jcampubs
November 13, 2025 at 8:56 PM
Key role of hydrogen in regulating hydrogenases and the reductive TCA cycle in a thermophilic, autotrophic sulfur-reducing bacterium journals.asm.org/doi/full/10.... #jcampubs
Facilitation–competition tradeoffs structure microbial niches and nitrogen cycling
doi.org/10.1101/2025...
doi.org/10.1101/2025...
November 13, 2025 at 5:28 PM
Facilitation–competition tradeoffs structure microbial niches and nitrogen cycling
doi.org/10.1101/2025...
doi.org/10.1101/2025...
Nitrite accumulation in marine oxygen minimum zones induced by microbial nitrite consumers
@xinsun-putiger.bsky.social found nitrite consumers counterintuitively lead to nitrite accumulation in marine OMZs! 🦠 🌊
doi.org/10.1038/s415...
@carnegiescience.bsky.social
@xinsun-putiger.bsky.social found nitrite consumers counterintuitively lead to nitrite accumulation in marine OMZs! 🦠 🌊
doi.org/10.1038/s415...
@carnegiescience.bsky.social
www.nature.com
November 13, 2025 at 5:26 PM
Nitrite accumulation in marine oxygen minimum zones induced by microbial nitrite consumers
@xinsun-putiger.bsky.social found nitrite consumers counterintuitively lead to nitrite accumulation in marine OMZs! 🦠 🌊
doi.org/10.1038/s415...
@carnegiescience.bsky.social
@xinsun-putiger.bsky.social found nitrite consumers counterintuitively lead to nitrite accumulation in marine OMZs! 🦠 🌊
doi.org/10.1038/s415...
@carnegiescience.bsky.social
Reposted by Britt Abrahamson
Spatiotemporal and temperature-dependent disconnect between ammonia oxidation and dark DIC fixation in deep oligotrophic Lake Constance academic.oup.com/ismecommun/a... #jcampubs
November 10, 2025 at 4:45 PM
Spatiotemporal and temperature-dependent disconnect between ammonia oxidation and dark DIC fixation in deep oligotrophic Lake Constance academic.oup.com/ismecommun/a... #jcampubs
Reposted by Britt Abrahamson
Strain displacement in microbiomes via ecological competition www.nature.com/articles/s41... #jcampubs
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.
www.nature.com
November 10, 2025 at 4:49 PM
Strain displacement in microbiomes via ecological competition www.nature.com/articles/s41... #jcampubs
Reposted by Britt Abrahamson
Acetone-mediated ammonium oxidation to dinitrogen by Zobellella taiwanensis bacteria academic.oup.com/ismej/advanc... #jcampubs
October 23, 2025 at 5:14 AM
Acetone-mediated ammonium oxidation to dinitrogen by Zobellella taiwanensis bacteria academic.oup.com/ismej/advanc... #jcampubs