Mike Jetten

#Urea: The Hidden Fuel for Ocean Microbes 🦠🌊

Study in @natcomms.nature.com shows how #ammonia-oxidizing #archaea thrive in nutrient-poor waters: Urea is a major energy source for #AOA in the open #ocean, while coastal AOA prefer #ammonium.

www.mpi-bremen.de/en/Urea-The-...

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...

hypeR-GEM: connecting metabolite signatures to enzyme-coding genes via genome-scale metabolic models www.biorxiv.org/content/10.6... #jcampubs

The GTDB website now has an ANI calculator based on skani that supports uploading of user genomes. Try it at gtdb.ecogenomic.org/tools/skani.

Find more information about @jimshaw.bsky.social fantastic tool at www.nature.com/articles/s41....

On behalf of the #MARIX @erc.europa.eu synergy team at #microbiology @ribesresearch.bsky.social we wish you a healthy and prosperous 2026. @carolineslomp.bsky.social @cuwelte.bsky.social @annajwallenius.bsky.social @jessicavenetz.bsky.social et al

Coastal areas can no longer keep up with methane emissions | Radboud University Heavily polluted waters, such as Lake Grevelingen, emit large amounts of methane. Microbiologist Anna Wallenius will defend her PhD thesis on this topic at Radboud University on 15 December.

On Monday 15 dec 1630h @Anna J. Wallenius will defend her PhD thesis "Muddy Affairs, Microbial #methane cycling in coastal ecosystems" please find the @ribesresearch.bsky.social coverage at www.ru.nl/en/research/...

Metabolic capacity is maintained despite shifts in microbial diversity in estuary sediments Abstract. Estuaries are highly productive ecosystems where microbial communities drive nutrient and carbon cycling, supporting complex food webs. With inte

So happy this is finally out! We reconstructed the 1st large-scale spatiotemporal dataset of 600+ MAGs from San Francisco Bay and show they have functional redundancy in key N and S pathways. These functions may better recover from disturbance in this highly urban estuary 💧

Coastal nitrogen drives respiration quotient in the Southern California Bight Abstract. Southern California Bight coastal waters are dynamic and strongly influenced by a changing climate. In the open ocean, an increased respiration quotient has been found during high temperatur...

Coastal nitrogen drives respiration quotient in the Southern California Bight bg.copernicus.org/articles/22/... #jcampubs 🌊

ERC Consolidator Grants for research on methane eaters, air showers and language in our brain | Radboud University Five Radboud University researchers are set to receive a Consolidator Grant from the European Research Council (ERC). Their research covers topics such as methane-eating micro-organisms, air showers f...

We congratulate Cornelia Welte with her @erc.europa.eu #Consolidator grant 🥳 for "electroANME": a project which will uncover how anaerobic methanotrophic (ANME) archaea oxidize methane, interact with bacteria, and use diverse metabolic pathways. Read more: www.ru.nl/en/research/...

Strikers on Dam Square call on Rob Jetten to save higher education

While coalition talks are in full swing, higher education is already putting pressure on the government to be. During a strike, lecturers and students are demanding that parties involved in forming the coalition – with D66 leading – scrap the budget cuts. www.folia.nl/en/actueel/1...

Duizenden studenten en docenten protesteren tegen bezuinigingen hoger onderwijs Duizenden studenten en docenten protesteren tegen bezuinigingen hoger onderwijs

Het was weer een fantastische dag! Alle actievoerders heel erg bedankt 👊
www.at5.nl/artikelen/23...

Stop de sloop! Vanmiddag stond ik met duizenden op de Dam om te protesteren tegen de desastreuze onderwijsbezuinigingen, nota bene doorgezet door een demissionair, ultraminoritair rompkabinet.

Lees hierover ook dit opinieartikel in NRC van afgelopen donderdag 4 december: lnkd.in/ety2QdZe

Mijn favoriete spanbord vandaag las "Bezuinig dan op Microsoft Teams” ❤️

Een paar foto's van de demo. #KabinetSlooptHogerOnderwijs 🟥

Purifying selection and low recombination facilitated sequential colonization of benthic and pelagic coastal ocean by ammonia-oxidizing archaea academic.oup.com/ismecommun/a... #jcampubs 🌊

8000 mensen protesteerden vandaag tegen de bezuinigingen op het hoger onderwijs en de verdere afbraak van de publieke sector. Nederland wordt echt een land van private rijkdom en publieke armoede.

Het was druk op de Dam, politie zegt 7500 mensen. Trots en vastberaden. Want we gaan door! #KabinetSlooptHogerOnderwijs

Dank dat je er bij was @fatihyaabdi.bsky.social ! Wij rekenen op jou en je collega's!

Geen bommen maar boeken in het nieuwe regeerakkoord @woinactie.bsky.social

Action group 0.7: ‘To @d66.nl, if you break your promise to retract the budget cuts, you will lose the votes of students and academics forever.’

sfeerimpressie van de Dam bij de Nationale Hogeronderwijsstaking. #WOinActie @aob.nl

Congratulations 🎉🎉🎉 to our esteemed #microbiology @ribesresearch.bsky.social colleague @cuwelte.bsky.social on being the proud recipient of a prestigious @erc.europa.eu consolidator grant on electroANME.
All the best with your research. Very well deserved :) erc.europa.eu/news-events/...

🟥 Not too late to join the strike of Dutch Universities at the Dam in Amsterdam today From 12h onwards to protest against the draconic budget cuts and convince the new to be government to invest in science&education
@woinactie.bsky.social @fnvuniversiteiten.bsky.social www.fnv.nl/cao-sector/o...

Impact of acetate on CO2 fixation pathways in thermophilic and hydrogenotrophic bacteria Abstract. The bacterial-type Wood-Ljungdahl (WL) pathway and reductive tricarboxylic acid (rTCA) cycle are the dominant chemolithotrophic CO2 fixation path

Impact of acetate on CO2 fixation pathways in thermophilic and hydrogenotrophic bacteria academic.oup.com/ismecommun/a... #jcampubs

Programma Stakingsactie 9 december / Programme Strike Action 9 December WOinActie is een beweging van studenten en medewerkers en maakt zich sterk voor de universiteit en haar toekomst.

Morgen de grote HO staking! Tot op de Dam!
Tomorrow the big HE strike! See you at Dam square!

woinactie.blogspot.com/2025/12/prog...

Opinie: Bezuinigingen op de omroep slopen het hart van onze cultuur De aangekondigde bezuinigingen bij de publieke omroep zijn geen gewone ingreep in een begroting, maar een amputatie van het culturele geheugen en het verbeeldingsvermogen van Nederland.

Nou dit dus.
www.volkskrant.nl/columns-opin...

Opinie: Bezuinigingen op de omroep slopen het hart van onze cultuur De aangekondigde bezuinigingen bij de publieke omroep zijn geen gewone ingreep in een begroting, maar een amputatie van het culturele geheugen en het verbeeldingsvermogen van Nederland.

Onderwijs, cultuur en wetenschap. Alles van waarde is weerloos. Zeker voor het dubbeldemissionaire rompkabinetje van VVD en BBB.
www.volkskrant.nl/columns-opin...

New preprint!
We explore how gutless marine worms and their bacterial symbionts use organosulfur compounds like DMSP and DMS - key molecules in marine sulfur cycling.
Our results show that these compounds support carbon and energy metabolism in the Olavius algarvensis symbiosis.

Nitrogen and carbon flows in a microbial mat involving anaerobic oxidation of methane in northwestern Black Sea: perspectives from nitrogen and carbon isotopic composition of coenzyme F430 and its bio... Coenzyme F430, a nickel-containing tetrapyrrole, serves as a cofactor for methyl-coenzyme M reductase (MCR), which catalyzes both the final step of methanogenesis and the initial step of anaerobic oxi...

link.springer.com/article/10.1...

Nitrogen and carbon flows in a microbial mat involving anaerobic oxidation of methane in northwestern Black Sea: perspectives from nitrogen and carbon isotopic composition of coenzyme F430 and its bio... Coenzyme F430, a nickel-containing tetrapyrrole, serves as a cofactor for methyl-coenzyme M reductase (MCR), which catalyzes both the final step of methanogenesis and the initial step of anaerobic oxi...

#Nitrogen and carbon flows in a microbial mat involving #anaerobic oxidation of #methane in northwestern Black Sea: perspectives from nitrogen and carbon isotopic composition of coenzyme F430 and its biosynthetic pathway
link.springer.com/article/10.1...