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Posts by Steffi J Nobs

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Promethearchaeota Persistence in Marine Sediments Frozen for Over 100 kyr Archaeal lineages of Promethearchaeota phylum were found to survive in marine sediments frozen for over 100 kyr. These findings not only enhance our understanding of evolutionary processes under long...

Promethearchaeota Persistence in Marine Sediments Frozen for Over 100 kyr - Liang - 2026 - Environmental Microbiology - Wiley Online Library enviromicro-journals.onlinelibrary.wiley.com/doi/10.1111/1462-2920.70...

1 month ago 1 1 0 0
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Mental health advocacy from @snobsi.bsky.social @jamsorgsyd.bsky.social
So inspiring and such an important thing to know. De-stigmatise.

1 month ago 0 1 0 0
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The murder map, regarding freezer stocks... A cautionary tale from @snobsi.bsky.social @jamsorgsyd.bsky.social

1 month ago 0 1 0 0

Biggest thank you to TJ for coming along! What I love about JAMS is how I've gotten to know people like you outside my immediate university network!

1 month ago 0 0 0 0
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🧫 JAMS Sydney is back! 🧫
We’re kicking off 2026 with an Archaea Special πŸ”¬
πŸ“… 24 February
⏰ 6–8 pm
πŸ“ Shakespeare Hotel, 200 Devonshire St, Surry Hills

New year, new venue, and a deep dive into one of the most fascinating domains of life. #JAMSSydney

2 months ago 2 2 1 0

Hint: I am one of the speaker details that are coming soon.

So save the date for some fun Archaea talk and behind-the-scenes insights from me, a recently submitted PhD.
πŸ¦ πŸ‘©β€πŸ”¬πŸ¦ 

2 months ago 5 2 0 0
Video

wow... crawling motility in Asgard #archaea!! www.biorxiv.org/content/10.1...

look at these crazy moves!! Let's face it, what these cells want for Christmas is #cilia... the best type of motility appendage...

4 months ago 36 10 3 0
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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...

Asgard on the move ! Watch our videos!
Biorxiv.org/content/10.1101/2025.11.30.690169v1

4 months ago 27 12 0 0
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To write well
you first have to write

badly.

Get some words down. However bad you think they are, you now have something to improve on. Review, rewrite and repeat. #acwri #PhDchat #PhDforum #ECRchat

5 months ago 5 1 0 0
List of available cultures

List of available cultures

Ecoli cells (Dapi, on left) expressing bacterial (center) and archaeal 16S rRNA.

Ecoli cells (Dapi, on left) expressing bacterial (center) and archaeal 16S rRNA.

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.

5 months ago 45 18 5 3
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Breaking up the thesis writing by engaging in some #citizenscience for the Sydney Sea Slugs Census 🀿🐌πŸͺΈπŸ“Έ

This was the spot of the day from Wylie's Baths - identified as a Plocamorpherus imperialis on iNaturalist.

#nudibranchs #underwaterphotography #sydneyseaslugcensus

5 months ago 1 0 0 0
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Here, we show that deep below, corals and feather stars don’t just share space – they share microbes. Endozoicomonadaceae + Nitrosopumilaceae inhabit both hosts in a β€œpromiscuous” symbiosis that may fuel nitrogen cycling in the deep sea.
doi.org/10.1186/s401... 🌊πŸͺΈπŸ§ͺ #Bioinformatics πŸ§¬πŸ’» #SymbioSky

5 months ago 37 14 0 0

Following NASA's recent announcement of a potential biosignature on Mars, I want to replug my colleague @fletcher42.bsky.social's work on exogeoconservation!

As they state - "There is a need to balance the greatest scientific returns with limiting the impact of taking samples."

πŸ§ͺπŸ”­πŸ‘©β€πŸš€

7 months ago 9 3 1 0
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Back with another post about how I stay grounded whilst writing up my thesis!
This morning's sunrise was insane πŸŒ„

7 months ago 16 4 0 0
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It was a high risk project and in the end I got 'scooped'. But my storytelling was engaging enough that even the camera picked up the 🌈 in me.

8 months ago 1 0 0 0
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PhD exit seminar βœ…

So happy I could share the bulk of my PhD where I optimised the expression, purification and (so far unsuccessful) polymerisation of novel eukaryotic-like proteins in Nelly (aka Loki-ASV2).

8 months ago 5 0 1 0
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Listening to Stephanie Nobbs (@snobsi.bsky.social) telling us about the fascinating Asgard archaea isolated from Shark Bay's microbial mats. They isolated a new archaea and assembled its genome and in silico proteome. Found lots of eukaryote-like tubulins + new protein folds

@unswbabs.bsky.social

8 months ago 2 2 0 0
Symbiotic Ammonia Oxidation in the Marine Environment | Annual Reviews Ammonia oxidation is a fundamental step in the marine nitrogen cycle, catalyzing the conversion of ammonia to nitrite or nitric oxide and generating reductive power for the autotrophic growth of micro...

New review out in Annual Review of Marine Science! 🌊🧫
We explore how ammonia-oxidising microbes form symbioses with marine hosts - fueling the nitrogen cycle, fixing carbon, and possibly feeding their hosts.
#Metagenomics πŸ§ͺ
#Bioinformatics πŸ§¬πŸ’» #SymbioSky
πŸ”— doi.org/10.1146/annu...

8 months ago 12 3 0 1
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Spatial evidence of cryptic methane cycling and methylotrophic metabolisms along a land–ocean transect in salt marsh sediment
#microbiology #methane
www.sciencedirect.com/science/arti...

8 months ago 4 2 1 0
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Thank you to the #archaea community for making my first #GRC a great one!

I'm grateful to have had the opportunity to present and meet lovely new people! ❀️🦠

Coming from an island country, it was also great to put faces (and personalities) to names I otherwise only see on papers. πŸ‘©β€πŸ”¬πŸ”¬πŸ‘©β€πŸ’»

8 months ago 17 0 1 0
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#GRS and #GRC #Archaea in the Swiss Alps: great meetings and location! Many familiar and even more new faces. Going home with exciting ideas and collaboration initiatives on exploring #archaeal #viruses in #soil! Thanks to everyone πŸ˜‰

8 months ago 30 6 3 0
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How do I celebrate my first preprint coming out in the middle of the GRC?

A swim in an Alpine like followed by a glass of Prosecco. πŸ₯‚

8 months ago 11 0 0 0

🚨 FIRST PAPER ALERT 🚨

My first research paper I've been involved with is out now as a preprint 🦠πŸ₯³πŸ¦ 

#archaea #microsky #PhD

8 months ago 26 5 0 0
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Half-way through my first GRC and I've;
🦠 Presented a well-received talk
🦠 Walked on a glacier
🦠 Not once had to explain what Asgard Archaea are

9 months ago 20 0 1 0
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Yes I am related to Claude Nobs (founder of the festival)! So the 1 place I absolutely had to visit was Funky Claude's Bar 🎺🍸
100% recommend

9 months ago 2 0 0 0
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Bonjour La Suisse Romande πŸ‡¨πŸ‡­One day between FEMS2025 and GRS: Archaea! What did I do? Visit the Montreux Jazz Festival of course 🎺 🎢 🎷

9 months ago 9 0 1 0

The time capsule is adorable! 🦠

9 months ago 1 0 0 0
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I had to leave #FEMS2025 before the closing ceremony but I left on a high note after finding out that I received the @femsmicro.org Microbiology Ecology Poster Prize, awarded by Max HΓ€ggblom!

9 months ago 12 1 1 0
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Archaea and Shark Bay featured in the South Australian Museum. Very on theme after my week at ASM!

9 months ago 4 2 0 0