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Steffi J Nobs

@snobsi.bsky.social
542 followers 845 following 38 posts

Environmental microbiologist 🦠 Protein evolution 🧬 PhD candidate 👩‍🔬 she/her 🌈

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Reposted by Steffi J Nobs
Tominaga K. (tomiken) @pacyc184.bsky.social · 17/03/2026
Promethearchaeota Persistence in Marine Sediments Frozen for Over 100 kyr - Liang - 2026 - Environmental Microbiology - Wiley Online Library enviromicro-journals.onlinelibrary.…
enviromicro-journals.onlinelibrary.wiley.com
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...
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tomjeffries.bsky.social @tomjeffries.bsky.social · 24/02/2026
Mental health advocacy from @snobsi.bsky.social @jamsorgsyd.bsky.social So inspiring and such an important thing to know. De-stigmatise.
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tomjeffries.bsky.social @tomjeffries.bsky.social · 24/02/2026
The murder map, regarding freezer stocks... A cautionary tale from @snobsi.bsky.social @jamsorgsyd.bsky.social
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Steffi J Nobs @snobsi.bsky.social · 25/02/2026
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!
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JAMS Sydney @jamsorgsyd.bsky.social · 11/02/2026
🧫 JAMS Sydney is back! 🧫 We’re kicking off 2026 with an Archaea Special 🔬 📅 24 February ⏰ 6–8 pm 📍 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
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Steffi J Nobs @snobsi.bsky.social · 09/02/2026
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. 🦠👩‍🔬🦠
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Kirsty Wan @micromotility.bsky.social · 02/12/2025
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...
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Archaea Biology Vienna @archaea-vienna.bsky.social · 03/12/2025
Asgard on the move ! Watch our videos! Biorxiv.org/content/10.1101/2025.11.30.690169v1
biorxiv.org
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...
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ithinkwellhugh.bsky.social @ithinkwellhugh.bsky.social · 21/11/2025
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
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Roland Hatzenpichler @environmicrobio.bsky.social · 17/11/2025
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.
List of available culturesEcoli cells (Dapi, on left) expressing bacterial (center) and archaeal 16S rRNA.
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Steffi J Nobs @snobsi.bsky.social · 15/11/2025
Breaking up the thesis writing by engaging in some #citizenscience for the Sydney Sea Slugs Census 🤿🐌🪸📸 This was the spot of the day from Wylie's Baths - identified as a Plocamorpherus imperialis on iNaturalist. #nudibranchs #underwaterphotography #sydneyseaslugcensus
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Alessandro Garritano @alegarritano.bsky.social · 13/11/2025
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 “promiscuous” symbiosis that may fuel nitrogen cycling in the deep sea. doi.org/10.1186/s401... 🌊🪸🧪 #Bioinformatics 🧬💻 #SymbioSky
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Steffi J Nobs @snobsi.bsky.social · 11/09/2025
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." 🧪🔭👩‍🚀
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Steffi J Nobs @snobsi.bsky.social · 04/09/2025
Back with another post about how I stay grounded whilst writing up my thesis! This morning's sunrise was insane 🌄
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Steffi J Nobs @snobsi.bsky.social · 14/08/2025
PhD exit seminar ✅ 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).
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Selene FeRNAndez @selfdz.bsky.social · 14/08/2025
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
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Alessandro Garritano @alegarritano.bsky.social · 07/08/2025
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 🧪 #Bioinformatics 🧬💻 #SymbioSky 🔗 doi.org/10.1146/annu...
doi.org
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...
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Evgenii Protasov @evgenii-protasov.bsky.social · 04/08/2025
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...
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Steffi J Nobs @snobsi.bsky.social · 26/07/2025
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. 👩‍🔬🔬👩‍💻
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Tatiana Demina @deminatanja.bsky.social · 25/07/2025
#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 😉
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Steffi J Nobs @snobsi.bsky.social · 23/07/2025
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. 🥂
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Steffi J Nobs @snobsi.bsky.social · 23/07/2025
🚨 FIRST PAPER ALERT 🚨 My first research paper I've been involved with is out now as a preprint 🦠🥳🦠 #archaea #microsky #PhD
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Steffi J Nobs @snobsi.bsky.social · 22/07/2025
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
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Steffi J Nobs @snobsi.bsky.social · 19/07/2025
Bonjour La Suisse Romande 🇨🇭One day between FEMS2025 and GRS: Archaea! What did I do? Visit the Montreux Jazz Festival of course 🎺 🎶 🎷
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Hannah Brown 🧂🦠🔬 @hannjbrown.bsky.social · 17/07/2025
Archaea and Shark Bay featured in the South Australian Museum. Very on theme after my week at ASM!
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Steffi J Nobs @snobsi.bsky.social · 17/07/2025
The final day of #FEMS2025 is done! Great opening session on extremophiles, an interesting discussion of using microbes as forensic tools and I've left with plenty of microbe nerds to bother the next time I'm in Europe 🦠🤓 Ciao Milano!
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Steffi J Nobs @snobsi.bsky.social · 16/07/2025
Day 2 of #FEMS2025 done! Loved meeting other microbe nerds and listening to some great talks. Im 100% biased today's session on extremophiles has been my favourite so far 🦠 🥶 🥵🧂 🦠
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Steffi J Nobs @snobsi.bsky.social · 15/07/2025
Loved my first full day at #FEMS2025 🦠 Thank you to everyone who came to chat with me at my poster. Can't wait to see more great speakers and talk more microbes tomorrow 👩‍🔬
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Steffi J Nobs @snobsi.bsky.social · 14/07/2025
Bongiorno Milano! Made it to #FEMS2025 after exploring the city. Catch me tomorrow (Tuesday) at poster 241.15P, Section D to talk Asgard archaea, protein folding and microbial dark matter. 🦠🔬 🦠
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Steffi J Nobs @snobsi.bsky.social · 13/07/2025
Swapped out the underwater macro setting of my camera to take some terrestrial macro photos on Klewenalp. 🌼🪷🪻
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Steffi J Nobs @snobsi.bsky.social · 10/07/2025
Warming up for 2 weeks of back-to-back conferences by 'networking' with grandma. Not a bad way to get over the jetlag. 🌞🥂🇨🇭
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Steffi J Nobs @snobsi.bsky.social · 09/07/2025
Half-way there for my euro summer to round out my PhD! 🌞🦠👩‍🎓 After tearing my ACL early last year, I'm excited to finally get around to 2 international conferences! Catch me at #FEMS2025, GRC: Archaea (and Montreux Jazz in between 🎺). #microsky #archaeasky
Sunset over an airport terminal with multiple planes lined in a row.
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Steffi J Nobs @snobsi.bsky.social · 26/06/2025
It has been charged under the light of a full moon 🌝 Sometimes you just need a little superstition to get you through the experiment 🔬
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Roland Hatzenpichler @environmicrobio.bsky.social · 24/06/2025
Manuscript/resource alert #microsky 🦠 My lab offers the community 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 19 yet uncultured ones.
List of 30 CloneFISH cultures available for free (requester is asked to pay shipping fees).
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JAMS Sydney @jamsorgsyd.bsky.social · 18/06/2025
JAMS June Monthly is next week🥳 📅 Tuesday 24th June, 2024 📍 The Rose, Chippendale (LOCATION CHANGE!) Can't wait to see you all at this new location! Come for the microbes, stay for the mates 🍻 #microbiolgy #JAMSmicro #science #seminar #networking #biology #research @doylemt1.bsky.social
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Nature Communications @natcomms.nature.com · 09/06/2025
What a missed opportunity... 🤔 We should have declared an official "Archaeal Week" at Nature Communications! 😆 www.nature.com/articles/s41... www.nature.com/articles/s41... www.nature.com/articles/s41... www.nature.com/articles/s41... #Archaea #ArchaeaSky 🦠
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Steffi J Nobs @snobsi.bsky.social · 17/03/2025
The best way to get myself out of the lab and my mind out of the PhD is to get into the ocean. 🤿🪸🐠 A few of my fav photos and edits so far! #PhDlife #marinelife #underwaterphotography #australianwildlife
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Steffi J Nobs @snobsi.bsky.social · 16/03/2025
Introducing my side gig to keep me sane during my PhD (and forcing friends to come with me) 🤿🪸🐠🪼
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Steffi J Nobs @snobsi.bsky.social · 24/01/2025
🚨New #astrobiology Paper Alert🚨 Great work by my colleague Clare Fletcher on publishing another chapter of their thesis which, in a nutshell, aims to stop _certain people_ from putting flags on Mars and trampling the planet. 🧪🪐 doi.org/10.1016/j.ps...
doi.org
Redirecting
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Steffi J Nobs @snobsi.bsky.social · 11/12/2024
🚨 bogus paper alert 🚨 Guess what's wrong with this preprint!? Level: easy But at least it gave me a good chuckle 🤭 www.biorxiv.org/content/10.1... #microsky #archaeasky
biorxiv.org
Unraveling the Mysteries of Sleep: Exploring Phylogenomic Sleep Signals in the Recently Characterized Archaeal Phylum Lokiarchaeota near Loki’s Castle
Sleep is a universally conserved behavior with an elusive origin and an uncertain evolutionary purpose. Leveraging phylogenomics, we investigate the evolutionary foundations of sleep by identifying or...
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Dementia Researcher @dementiaresearcher.bsky.social · 29/11/2024
When supervisors vanish, where do you turn? Dr Yvonne Couch offers guidance on surviving and thriving in the absence of academic support. @dryvonnecouch.bsky.social #phdlife buff.ly/4fI92fT
This image is a promotional graphic for a blog titled "Coping with An Absent Supervisor" by Dr Yvonne Couch, Associate Professor at the University of Oxford. The design resembles a corkboard with two pinned "Missing" posters.

The first poster shows "Dr. E. Lusive," a fictional character described as a 44-year-old supervisor "missing" from their lab. The poster includes an image of a person in a lab coat, with a humorous description about their absence.
The second poster features "Dr. Skip Towne," another fictional supervisor described as missing, with an image of an older individual standing in front of a whiteboard.
On the top right of the graphic, there's a headshot of Dr Yvonne Couch with her name, title, and university affiliation in a bold red banner.
At the bottom, the blog title "Coping with An Absent Supervisor" is prominently displayed on a white strip, giving a clean, professional finish to the design.
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Steffi J Nobs @snobsi.bsky.social · 28/11/2024
An interdisciplinary initiative dedicated to Archaea!!! 🦠🔬🦠 I'm very excited to see the things that will come out of it! 🧪 👩‍🔬 #archaeasky #microsky
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Hannah Brown 🧂🦠🔬 @hannjbrown.bsky.social · 23/11/2024
🚨 New paper alert! 🚨 MinD is famously known for positioning FtsZ at mid-cell in bacteria In our study, myself and @iduggin.bsky.social found that MinD homologues in Haloferax volcanii influence the localisation of CetZ1, a homologue of FtsZ and tubulin #Archaeasky #Microsky
url.au.m.mimecastprotect.com
Frontiers | MinD proteins regulate CetZ1 localization in Haloferax volcanii
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Sofia Medvedeva @sonaida.bsky.social · 22/11/2024
Have you ever heard about sheaths? Happy to share our last paper with @sgribaldo.bsky.social and Guillaume Borrel @pasteur.fr where we investigated their distribution and evolution! doi.org/10.1093/isme... Below a thread of our major findings:
doi.org
Sheaths are diverse and abundant cell surface layers in archaea
Abstract. Prokaryotic cells employ multiple protective layers crucial for defense, structural integrity, and cellular interactions in the environment. Arch
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Steffi J Nobs @snobsi.bsky.social · 22/11/2024
Bacteria, archaea and phages, oh my! 🦠 It's work like this that shows how important it is to study all the domains of life 🧬 #microsky #archaeasky
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Steffi J Nobs @snobsi.bsky.social · 20/11/2024
Hello #microsky! Now that I've made it here, let me introduce myself: 3rd yr PhD uncovering the world of archaeal tubulins 🧬 🦠-iologist by training but dabbling in proteins thanks to @kmichie.bsky.social Also your friendly neighbourhood @jamsorgsyd.bsky.social secretary ✍️
Two women; the one on the left pulling a silly face and the one on the right smiling at the camera. They are wearing matching green shirts and clinking glasses of white wine.
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JAMS Sydney @jamsorgsyd.bsky.social · 20/11/2024
JAMS Sydney has made its way to Bluesky! ✨ Help us connect JAMSters as they make their way over so let us know if you'd like to be added! 🦠 go.bsky.app/B1uUprK
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Kate Michie @kmichie.bsky.social · 18/11/2024
Anymore archaea peeps out there keen to be part of the ‘kingdom’? #archaeasky go.bsky.app/PEx7P9v
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