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Kaçar Lab at UW-Madison

@kacarlab.bsky.social

186 Following705 Followers

Past, Present and Future of Life
Here and Elsewhere
PI: Betül Kaçar
Account managed by lab members.
Latest paper: https://www.nature.com/articles/s41467-026-72133-0
✨
kacarlab.org

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@kacarlab.bsky.socialMay 6, 2026, 11:58 AM Pinned

Latest paper out in Nature Communications!

We find molecular dating evidence that life was using molybdenum and tungsten as far back as ~3.4 billion years ago, reshaping how we think about trace metals and early microbial evolution.

Read here:
www.nature.com/articles/s41...

nature.comBiological use of molybdenum and tungsten stems back to 3.4 billion years ago - Nature CommunicationsThe study shows that life began using molybdenum and tungsten enzymes as early as 3.7–3.1 billion years ago. Study reveals that key metabolic processes arose despite scarce metals and highlighting the...
@astrobiology.bsky.socialSep 25, 2026, 8:57 PMReposted by @kacarlab.bsky.social

Meet the survivors of Earth’s worst days -These microbes endured the unlivable. The NASA astrobiologist who studies them reveals what that means for us today bigthink.com/the-well/ear... - Betül Kaçar #astrobiology

@cyanotrans.bsky.socialSep 22, 2026, 10:05 AMReposted by @kacarlab.bsky.social

We recently learned of the passing of Patricia Sánchez Baracaldo, who made many significant contributions in the field of phylogeny and cyanobacteria.
www.bristol.ac.uk/news/2026/ju...
Rest in peace.

@abgradcon.bsky.socialSep 21, 2026, 3:27 PMReposted by @kacarlab.bsky.social

That's a wrap on the 2026 Astrobiology Graduate Conference! We hope you all had a fantastic time learning and sharing your science with fellow early-career researchers in our field. Ad astra! ✨

#abgradcon #abgradcon26 #astrobiology #NASA

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@kacarlab.bsky.socialSep 18, 2026, 4:20 PM

@uwmadscience.bsky.social @uwmadgsed.bsky.social

@kacarlab.bsky.socialSep 18, 2026, 4:19 PM

Graduate student Allie Beyer crushing it at the #ICRP2026 (International Conference on Retinal Proteins) meeting in Sienna, Italy. Way to go, Allie & way to go ancient rhodopsins! 👏👏👏@uwmadgsed.bsky.social @uwbact.bsky.social

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@organiccarbon.bsky.socialApr 23, 2026, 8:45 AMReposted by @kacarlab.bsky.social

I am heartbroken to share that our wonderful colleague Patricia Sanchez-Baracaldo has passed away. She was a lovely person and a brilliant colleague and she will forever be an inspiration.

royalsociety.org/about-us/who...

royalsociety.orgDr Patricia Sanchez-Baracaldo - Parent Carer Scientist | Royal SocietyThis profile of Dr Patricia Sanchez-Baracaldo is part of Parent Carer Scientist, a project showcasing the diversity of approaches to combining scientific careers with caring responsibilities.
@kacarlab.bsky.socialSep 4, 2026, 8:25 PMReposted by @kacarlab.bsky.social

Amazing! Latest spotlight in @cp-trendsbiochem.bsky.social highlights our lab's recent work on the origins of Mo/W!!!

A first for the lab, congrats, Aya and everyone! 🎉

www.cell.com/trends/bioch...

Link for the original paper: www.nature.com/articles/s41...

cell.comA phylogenomic analysis of ancient transition metal biochemistryDespite seemingly low levels of molybdenum (Mo)/tungsten (W) in the Earth’s ancient oceans, these metals play central roles in driving modern biogeochemical cycles. Klos et al. used phylogenomic appro...
@astrobiology.bsky.socialSep 6, 2026, 5:04 PMReposted by @kacarlab.bsky.social

astrobiology.com/2026/09/06/t... #astrobiology #OriginOfLife #evolution

astrobiology.comThe Emergence Of Life In The Light Of EvolutionThe origin of life is often framed primarily as a chemical problem, yet life s defining feature is evolution.
@astrobiology.bsky.socialSep 5, 2026, 8:26 PMReposted by @kacarlab.bsky.social

astrobiology.com/2026/09/04/a...
#Astrobiology #AbGradCon #AbGradCon26 #NASA @NASAScience_

astrobiology.comAstrobiology Graduate Conference (AbGradCon26) UpdateAstrobiology Graduate Conference (AbGradCon26) Update
@kacarlab.bsky.socialSep 4, 2026, 8:25 PM

Amazing! Latest spotlight in @cp-trendsbiochem.bsky.social highlights our lab's recent work on the origins of Mo/W!!!

A first for the lab, congrats, Aya and everyone! 🎉

www.cell.com/trends/bioch...

Link for the original paper: www.nature.com/articles/s41...

cell.comA phylogenomic analysis of ancient transition metal biochemistryDespite seemingly low levels of molybdenum (Mo)/tungsten (W) in the Earth’s ancient oceans, these metals play central roles in driving modern biogeochemical cycles. Klos et al. used phylogenomic appro...
@stripplab.bsky.socialSep 3, 2026, 3:06 PMReposted by @kacarlab.bsky.social

Not to miss:

PProtein Structure Evolution (ProSE) Seminar@proteinstructure.bsky.socialSep 1, 2026, 7:34 PM

Join us next Tuesday, 5PM CET for our first ProSE after the summer! Betül Kaçar @kacarlab.bsky.social will talk about the origin and early evolution of ancient proteins! 📜🧬 tinyurl.com/prose-seminar2

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@proteinstructure.bsky.socialSep 1, 2026, 7:34 PMReposted by @kacarlab.bsky.social

Join us next Tuesday, 5PM CET for our first ProSE after the summer! Betül Kaçar @kacarlab.bsky.social will talk about the origin and early evolution of ancient proteins! 📜🧬

tinyurl.com/prose-seminar2

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@kacarlab.bsky.socialAug 6, 2026, 7:20 PMReposted by @kacarlab.bsky.social

🚨 Job alert! 🚨

Join the faculty at UW–Madison Bacteriology!

We have two faculty searches:

• Asst Prof (Microbial Communities & Bioeconomy)
• Asst / Assoc / Full Prof (Systems & Synthetic Biology)

Check out the open positions and apply👇 #FacultyJobs #SynBio #Microbiology #Astrobiology #Evolution

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@karenlloyd.bsky.socialAug 17, 2026, 9:52 PMReposted by @kacarlab.bsky.social

Check out this awesome New Yorker article James Dinneen wrote about our work with Emil Ruff's NASA ICAR work and Yasube Yabe's D-SEIS project in the South African Gold Mine! It was a pleasure to have James join us, he's an intrepid traveler! tinyurl.com/4k4fh33r

tinyurl.comThe Mystery of Dark OxygenScientists once thought that life-sustaining oxygen existed only near Earth’s surface. Then they detected it deep underground.
@norska11.bsky.socialAug 18, 2026, 6:04 PMReposted by @kacarlab.bsky.social

This is such an enjoyable episode of Star Talk. How life started, atoms, molecules, bacterium, enzymes, amino acids, possible life on other planets.
youtu.be/72ugdkB7oQ4?...

youtu.beAn Astrobiologist Pieces Together How Life Started, with Betül KaçarYouTube video by StarTalk
@brunocuevaszuviria.bsky.socialAug 9, 2026, 11:28 PMReposted by @kacarlab.bsky.social

I am looking for ideas on how to teach coding ensuring that students don't simply use the AI. Searching it online turns out to only give me courses on "No-code AI" when my search queries are actually different forms of "No AI coding"

@kacarlab.bsky.socialAug 7, 2026, 12:34 AM

Still happily studying bacteria from within!

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@kacarlab.bsky.socialAug 6, 2026, 10:26 PM

We welcome all domains of life but the name stays. It's a bacterial planet, after all!

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@kacarlab.bsky.socialAug 6, 2026, 7:22 PM

Fantastic students, colleagues and town! We are looking forward to your applications.

bact.wisc.edu

#MicrobiologyJobs #FacultyJobs

bact.wisc.eduDepartment of BacteriologyBacteriology is Hiring! The Department of Bacteriology invites applications for two new faculty members. Welcome The University of Wisconsin-Madison Department of Bacteriology makes fundamental discov...
@kacarlab.bsky.socialAug 6, 2026, 7:20 PM

🚨 Job alert! 🚨

Join the faculty at UW–Madison Bacteriology!

We have two faculty searches:

• Asst Prof (Microbial Communities & Bioeconomy)
• Asst / Assoc / Full Prof (Systems & Synthetic Biology)

Check out the open positions and apply👇 #FacultyJobs #SynBio #Microbiology #Astrobiology #Evolution

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