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@oleksiykovtun

Group leader @mpi_nat, Göttingen, DE, exploring mechanisms of membrane trafficking. Cryo-EM, Cryo-ET, structural biology, cell biology. All opinions are my own.

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05.04.2025
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Latest posts by @oleksiykovtun

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New preprint out!
In this study, we introduce NanoFLex, a strategy that combines #HaloTag variants with #nanobodies -based immunolabeling to enable rapid, OneStep-IF #lifetime #multiplexing. Possible due to SmartSecondaries fused to #HaloTag from @nanotag.bsky.social: www.biorxiv.org/content/10.6...

04.03.2026 10:11 👍 72 🔁 37 💬 1 📌 3
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Postdoctoral Fellow Job Posting Title: Postdoctoral Fellow ---- Hiring Department: Molecular Biosciences ---- Position Open To: All Applicants ---- Weekly Scheduled Hours: 40 ---- FLSA Status: Exempt ---- Earliest Start ...

#PostdocRecruiting:
My group at the University of Texas at Austin is recruiting a Postdoc in virology and structural biology. Please see more details here:
utaustin.wd1.myworkdayjobs.com/UTstaff/job/...

Informal inquiries are encouraged, and see more lab info here: zunlongke-lab.org

04.03.2026 19:27 👍 11 🔁 8 💬 0 📌 0

Borrowing virus exits machinery to distillate transmembrane proteins for cryo-EM! Congrats Zunlong and the team!

05.03.2026 11:53 👍 2 🔁 0 💬 0 📌 0

Great achievement! Congratulations!

03.03.2026 19:01 👍 1 🔁 0 💬 0 📌 0
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My choice this week in @science.org
@florentin-lab.bsky.social
doi.org/10.1083/jcb....

02.03.2026 16:48 👍 15 🔁 5 💬 2 📌 1
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#membrane seminars are back this week wirh Manu @deriverylab.bsky.social and Andela Šarić! Join us on Thursday at 5 pm CET spread the word!

23.02.2026 16:22 👍 10 🔁 9 💬 1 📌 1

Next preprint"cryo-ET reveals molecular details of tiny legs in green algae"

22.02.2026 22:26 👍 3 🔁 0 💬 1 📌 0
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📢 Registration for the 28th Annual Meeting of the Club Exocytose-Endocytose is open until April 15 !
👉 Register here: exoendo.org/en/evenement...
Please share widely!
@gdrimabio.bsky.social @biologists.bsky.social @sbcf.bsky.social @embo.org @febsletters.bsky.social @sneuroendo.bsky.social

17.02.2026 11:06 👍 17 🔁 16 💬 1 📌 0

Unlike XRD, cryoEM always gets you a density map. This is simultaneously is a blessing and a curse of the method 😂

21.02.2026 16:26 👍 3 🔁 0 💬 0 📌 0
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Join us next Tuesday for the next @dgz.bsky.social workshop on #trafficking and EVs! Spread the word please!

20.02.2026 14:25 👍 17 🔁 15 💬 0 📌 4

Beautiful. Haven't seen such a remarkable double-row polysome in the wild, outside the cell-free formed ones.

20.02.2026 09:30 👍 1 🔁 0 💬 0 📌 0
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Nice preprint! We still don’t know how insulin-responsive GLUT4 storage vesicles (GSVs) are made. @steveroyle.bsky.social shows a subset of intracellular nanovesicles sort and retain GLUT4, supplying components that build these unique vesicles.
www.biorxiv.org/content/10.6...

18.02.2026 10:24 👍 14 🔁 4 💬 2 📌 0
Research Group Leader Tenure Track - Structural Studies - LMB 2775 - Medical Research Council Location: Cambridge. Vacancy: Research Group Leader Tenure Track - Structural Studies - LMB 2775. Closing Date: 16/03/2026, 23:55

Please spread the word: the Structural Studies Division @mrclmb.bsky.social is looking for a new tenure-track, independent group leader with an exciting plan in any area of Structural (Molecular & Cell) biology, in discovery biology and/or methods development. 🥳

mrc.tal.net/vx/mobile-0/...

16.02.2026 12:09 👍 83 🔁 106 💬 1 📌 2
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Postdoc Research Group Schur The Schur lab at the Institute of Science and Technology Austria (ISTA) has an open postdoc position for a highly motivated candidate to be part of our ERC-funded project ActinID. Our Group ...

Open Postdoc position in our lab!
#actin #Huntingtin #cryoET #cellbio
If you enjoy working at the interface of cell biology, structural biology, and quantitative imaging, this could be an excellent fit.

ista.ac.at/en/job/postd...

Please share and feel free to reach out if there are questions!

13.02.2026 15:50 👍 32 🔁 19 💬 1 📌 2

Beautiful work! Congratulations!

10.02.2026 10:35 👍 1 🔁 0 💬 0 📌 0
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There was so much to unpack with this data, we teamed up with the marvellous @margotriggi.bsky.social to help explain what we think is going on. (Please also check out our model of central apparatus assembly here: www.biorxiv.org/content/10.6...)

06.02.2026 11:20 👍 48 🔁 15 💬 3 📌 3

Its not cryoEM, but still happy for the shout out @cryoempapers.bsky.social 😆

05.02.2026 20:37 👍 14 🔁 3 💬 0 📌 0

Excited to share this detailed biophysical study of #PhaseSeparation in the Pyrenoid, an algal microcompartment that fixes a third of the Earth's #CO2 🌏. We combine methods across scales, in vitro 🧪 and in vivo 🦠

Thanks for the very fun collaboration! 🤗
#PlantScience 🌾 #TeamTomo 🔬 #LivingPhysics 🧬🧶

30.01.2026 15:50 👍 64 🔁 19 💬 1 📌 1
The GTPase activating protein Gyp6 binds Retromer and inactivates Rab7/Ypt7 to coordinate the formation of endosomal carriers The Retromer coat is conserved in all eukaryotes and is crucial for the correct intracellular sorting of many transmembrane receptors and lysosomal hydrolases. Retromer is an effector of the late endosomal small GTPase RAB7 and is also implicated in its inactivation required for proper endosomal maturation. Here, we explore the role of controlled GTP hydrolysis by the RAB7 ortholog Ypt7 in the formation of Retromer-coated membrane carriers in yeast. Proximity labelling and genetic ablation identify the GTPase Activating Protein (GAP) Gyp6 as a critical regulator of Ypt7 activity in the context or Retromer. Structural studies show that Retromer recruits Gyp6 through its Vps29 subunit, which recognises a specific PL motif and a secondary binding site in the C-terminal domain of Gyp6. This interaction does not occur with other yeast GAPs. Ablation of the Gyp6-Retromer interface or the catalytic activity of Gyp6 leads to the accumulation of tubular structures on endo-lysosomal compartments and to increased association of Ypt7 with Retromer and its cargo Vps10. These results support a model in which Gyp6 controls the switch from Ypt7-dependent Retromer coat assembly and cargo collection to the departure of the carrier through membrane fission and uncoating. ### Competing Interest Statement The authors have declared no competing interest. National Health and Medical Research Council, https://ror.org/011kf5r70, APP2016410 Swiss National Science Foundation, https://ror.org/00yjd3n13, 31003A_179306, 310030_204713, 10.006.083

Do you want to know more about how Retromer regulates Rab7 activity in yeast? Of course you do. Check out the new collaboration with Andreas Mayer with work led by Catarina Alves and Kevin Chen.

28.01.2026 01:25 👍 20 🔁 10 💬 0 📌 0

Reminder with <2 weeks to deadline:

26.01.2026 11:58 👍 13 🔁 12 💬 0 📌 0
How bacterial Tc toxins work: secretion, pore formation and host cell disruption.
How bacterial Tc toxins work: secretion, pore formation and host cell disruption. YouTube video by Max Planck Institute of Molecular Physiology

Our new movie is online, highlighting the assembly, secretion and mechanism of action of bacterial Tc toxins. We hope you enjoy it and use it for teaching purposes or just for fun. Nature is fascinating!

www.youtube.com/watch?v=UfEf...

15.01.2026 08:23 👍 18 🔁 5 💬 0 📌 1
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Check out the Highlight Issue of Biological Chemistry on the new avenues in organelle biology! I was very honoured to assemble it together with Emma Fenech. We devote it to our mentor Maya Schuldiner on the occasion of her anniversary. Enjoy! www.degruyterbrill.com/journal/key/...

06.01.2026 14:38 👍 4 🔁 2 💬 0 📌 0

What a teaser. Any hints on where the improvement will come from?

06.01.2026 09:06 👍 0 🔁 0 💬 1 📌 0

Congrats!

06.01.2026 09:00 👍 1 🔁 0 💬 0 📌 0
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#membrane seminars are back this THURSDAY for a super session with @dr-downes.bsky.social from the @giuliazanetti.bsky.social lab and Xin Zhou from the Ikonen lab! @felixmendu.bsky.social @ishier.bsky.social

03.12.2025 11:20 👍 15 🔁 13 💬 1 📌 0
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Junior professor position at the University of Kaiserslautern! Our Department of Biology is seeking a colleague working with microalgae. This is a wonderful place to do wonderful science with great people! Please, repost :)
Further details:
jobs.rptu.de/jobposting/1...

20.11.2025 15:28 👍 15 🔁 12 💬 0 📌 0
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Our lab @mrclmb.bsky.social in Cambridge is seeking a passionate PhD student to explore transcription-coupled splicing! Join our team for an exciting project to understand human gene regulation 🧬 Feel free to get in touch directly #PhD #cryoEM #biochemistry

www2.mrc-lmb.cam.ac.uk/students/int...

23.10.2025 10:32 👍 10 🔁 11 💬 0 📌 0
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chris hill PhD Projects, Programmes & Scholarships - 3 PhDs Listed FindAPhD. Search Funded PhD Projects, Programmes & Scholarships in chris hill. Search for PhD funding, scholarships & studentships in the UK, Europe and around the world.

🚨Attention prospective PhD students🚨
Are you interested in molecular mechanisms, RNA viruses, structural biology or biophysics? 🧬🦠🧪

We have THREE fully-funded PhD projects available for October 2026 entry:
www.findaphd.com/phds/?Keywor...

Please share/repost, and get in touch if you're interested

13.11.2025 19:54 👍 11 🔁 13 💬 0 📌 1

Happy to see our recent Asgard chromatin structures shown in a new light! 🤩👩🏻‍🎨 - thanks to a beautiful design by @leonoramartinez.bsky.social

12.11.2025 12:22 👍 24 🔁 5 💬 1 📌 0

The position is split between Göttingen and Rehovot; you’ll lead the project end-to-end with access to state-of-the-art EM and imaging facilities in both places.

13.11.2025 16:31 👍 0 🔁 0 💬 0 📌 0