Anuj

Anuj

@rnfr2d2.bsky.social

CryoEM | Anaerobic structural biology | Bioenergetics | CO2 fixation and energy conservation SYNMIKRO Marburg

125 followers145 following32 posts

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We wrote a short Spotlight article in @cp-trendsmicrobiol.bsky.social to highlight the wonderful work from @rhyswg.bsky.social and @ashleighkropp.bsky.social www.cell.com/trends/micro...

cell.comQuinone-trapping filaments enhance respiratory capacityCells expand respiratory capacity by adding internal membranes or forming cristae. A new study by Kropp and colleagues shows that the Gram-positive bacterium Bacillus subtilis instead builds hollow pr...
Rhys Grinter@rhyswg.bsky.social

Out now in @natmicrobiol.nature.com: Bacillus subtilis builds protein filaments that act as a pseudomembrane, pulling quinone out of the bilayer and carrying it into the cytosol for reduction by NADH dehydrogenase, well away from the membrane itself. doi.org/10.1038/s415... 1/5

Anuj reposted

So happy to see this paper finally out 🥳 it took only seven years after the first purification of archaeal peptidoglycan 🤣 Congrats to all the people involved 🥂🍾 And here is the story behind the paper: communities.springernature.com/posts/cracki...

communities.springernature.comCracking the Archaeal Cell Wall: How a hydrolase overturned a 50-year-old paradigmUsing bioinformatics, biochemistry, NMR, as well as the newly characterized enzyme ArmA from methanogenic archaea, we revised the existing knowledge on archaeal peptidoglycan structure. At the same ti...
Simonetta Gribaldo@sgribaldo.bsky.social

Interested in #archaea, #methane, #cell-envelopes? New paper out @nature.com ! We discovered an enzyme that specifically cleaves the cell wall of methanogens, revealing a new chemical structure of archaeal peptidoglycan, 50 yrs after its first description www.nature.com/articles/s41... #MicroSky 🧵👇

Anuj reposted

A sad day. Ada's pioneering work on the ribosome changed how we understand one of the central machines of life. She is a remarkable example of curiosity and boldness in pursuing questions that seemed impossible. Her scientific courage and persistence has been an inspiration.

wis-wander.weizmann.ac.ilProf. Ada Yonath, Nobel Laureate and a Model of Scientific Perseverance, Has Passed Away - Weizmann Wonder Wander - News, Features and DiscoveriesFrom pursuing an impossible dream to uncovering one of the cell’s best-kept secrets and advancing the design of improved antibiotics

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One month left to apply!! 🧪 @biozentrum.unibas.ch seeks a group👩‍🔬 exploring molecular questions relevant to climate 🌍, including biogeochemical cycles (e.g., carbon, nitrogen) ♻️, bioenergetic energy conversion (e.g., photosynthesis, chemosynthesis) ☀️⚗️, and the adaptation to environmental change 🌊🌡️🦠🌾

Ben Engel@cellarchlab.com

Super excited to launch this search for a new endowed professor at the @biozentrum.unibas.ch! Join us to build a research cluster in Climate Biophysics! 🌍🌊🌾🔬🧪 This is a unique opportunity to create a community in Basel🇨🇭working together on this timely topic! ⏳🌡️ Questions? Please reach out! 👩‍🔬👨‍🔬

Anuj reposted

This story is now published in @natplants.nature.com ! 🎉🎩 Check out the final article here: nature.com/articles/s41477-026-02361-1 Very similar to the original bioRxiv preprint, with the addition of some cool polysome analysis (in the supplementals)! Thanks and congrats to everyone involved! 🙏

nature.comChloroplast-encoded small subunit extensions reshape the Chlamydomonas chlororibosome - Nature PlantsUsing in situ cryo-electron tomography, researchers found a unique ‘arm’ domain on the small subunit of Chlamydomonas chlororibosomes. This discovery suggests that chlororibosome structure is more evo...
Florent Waltz@florentwaltz.bsky.social

Long in the making, but happy to present the Chlamydomonas chlororibosome! Cryo-ET🔬reveals a large new domain on the small subunit, built from multiple extensions in conserved ribosomal proteins. bioRxiv 📖: shorturl.at/q44tG This suggests greater chlororibosome diversity than expected! 1/n 🧵

Anuj reposted

The title says it all. Check out our preprint 👇👇👇👇

bioRxiv Biochemistry@biorxiv-biochem.bsky.social

Anaerobic time-resolved serial crystallography captures CO dissociation and rebinding in oxygen-sensitive [FeFe]-hydrogenase https://www.biorxiv.org/content/10.64898/2026.07.22.740055v1

Anuj reposted

Awesome work to determine the structure of a freakin 8MDa enzyme complex with over 600 FeS clusters! Sophia won the poster prize at the recent GRC C1 👏 www.nature.com/articles/s41...

nature.comArchitecture of the 8 MDa Hdr–Vhu–Fwd super-assembly in class I methanogens - NatureThe structure of the Hdr–Vhu–Fwd super-assembly reveals a lineage-specific and modular 8 MDa complex with the ability to adapt to diverse anaerobic niches.
ProLOEWE@proloewe.bsky.social

Huge discovery from Marburg: Prof. Schuller (@synmikro.bsky.social),doctoral stud. @sophia-pa.bsky.social+colleagues have resolved1️⃣of the🧬🔬largest enzymes. Published in Nature, the study shows how methanogenic archaea generate energy under extreme conditions, offering🆕insights into the🌎carbon cycle.

Mother of all electron-bifurcating complexes is here! Congratulations to Sophia @sophia-pa.bsky.social for discovering and determining the structure of this mega assembly! You put in so much effort to get this paper published. I am so happy and proud of you and your achievement!

Sophia Paul@sophia-pa.bsky.social

Excited to share my paper! 🥳 Today in #Nature we reveal an 8 MDa Hdr electron bifurcating super-assembly in class I methanogens that couples the first and last steps of hydrogenotrophic methanogenesis. A lineage-specific adaptation to anaerobic niches. www.nature.com/articles/s41...

Check out this latest work from @gyanaprakash.bsky.social on the structure of an electron bifurcating/confurcating hydrogenase from cyanobacteria!

Gyana Prakash Mahapatra@gyanaprakash.bsky.social

Excited to share our new preprint! How does the cyanobacterial hydrogenase HoxEFUYH drive photosynthetic H₂ production? Using #cryoEM, biochemistry, FTIR and EPR spectroscopy, we reveal its molecular mechanism, including the basis of electron bifurcation/confurcation. www.biorxiv.org/content/10.6...

Anuj reposted

1/7 New preprint: we found that Chlamydomonas carries a giant and unexpectedly elaborate chloroplast RNA polymerase with 12 previously unknown subunits, overturning the idea that the complexity of this organellar enzyme emerged during plant terrestrialization! www.biorxiv.org/content/10.6...

biorxiv.orgThe structure of a 2-MDa chloroplast RNA polymerase reveals unexpected evolutionary complexityTranscription in chloroplasts depends on the Plastid-Encoded RNA polymerase (PEP), a bacterial-derived enzyme whose catalytic core remains encoded by the highly reduced genome inherited from the cyano...

Anuj reposted

Do you enjoy the thrill of discovery? Does this photo give you good vibes? Then you might be the right person to join our lab! Current projects range from chloroplast transcription to thylakoid membrane remodeling & we would be happy to welcome bright and motivated people at all career stages!

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We just received funding for a 2yr postdoc position on cryoEM of fungal gpcrs. Official call will open soon. Contact me if you‘re interested!

Der Biologe Dr. Florian Altegoer vom Institut für Mikrobiologie der Heinrich-Heine-Universität Düsseldorf (HHU) erhält einen mit 210.000 Euro dotierten „Exploration Grant“ der Boehringer Ingelheim Stiftung (BIS).

Anuj reposted

Across scales from cells🦠 to atoms⚛️ – We reveal how anaerobic #bacteria break down very stable aromatic compounds found e.g. in oil spills 🛢️ #Bioremediation #TeamTomo 🧪 🧶🧬 🔬 Awesome collab with Lena, Matthias, @schullerjm.bsky.social @rnfr2d2.bsky.social @tomaspascoa.bsky.social @tamb-o.bsky.social

Tomas Pascoa@tomaspascoa.bsky.social

1/ Excited to share our preprint! 🥳 Degradation of aromatic compounds, including BTEX pollutants, requires highly endergonic aromatic ring reduction. Using #cryoEM and in situ #cryoET, we show how BCRII couples electron bifurcation modules in one giant redox machine www.biorxiv.org/content/10.6...

Anuj reposted

Thanks for the fun collaboration into this fascinating “oil eating” biomachine. I learned a lot! 🧪 #TeamTomo

Anuj@rnfr2d2.bsky.social

How do “LEGO-like” electron-bifurcating modules combine to drive degradation in BTEX-contaminated ecosystems? Check out our latest preprint, where we use cryo-EM and cryo-ET to reveal how the 1 MDa BCRII complex powers extremely endergonic aromatic ring reduction. www.biorxiv.org/content/10.6...

Anuj reposted

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65 years after Peter Mitchell’s chemiosmotic theory, we report an association between ATP synthase and the electron transport chain. In the preprint led by @longzhou88.bsky.social, we describe a large supercomplex and show how the supramolecular organization contribute to oxidative phosphorylation 🧵

langtaosha.org.cnA Supercomplex Incorporating Both Electron Transport Chain and ATP SynthaseThe mitochondrial oxidative phosphorylation system powering most aerobic organisms is typically depicted as two spatially segregated machineries(1): electron transport chain complexes I-IV (ETC CI-CIV

Highly recommended! Very cool science and great projects!

georghochberg.bsky.social@georghochberg.bsky.social

I will probably be hiring either a PhD or a Postdoc in the near future. If you are interested in deep biochemical history or molecular mechanisms of evolution please get in touch.

I am truly honoured and delighted to receive the GBM #PhDAward from @gbmev.bsky.social Grateful to @schullerjm.bsky.social and Prof. Volker Müller for their continuous support and guidance! www.uni-marburg.de/en/prfolder-...

uni-marburg.deGBM PhD Prize 2026 awarded to Marburg Researcher Anuj KumarAward honors outstanding dissertation on CO₂ fixation and energy conservation in microorganisms

The GBM #PhDAward was presented to Anuj Kumar for his PhD thesis on the „Structural basis of CO2 fixation and energy conservation in acetogens“ Congratulations, Anuj! #MK2026 @unimarburg.bsky.social

Anuj reposted

Carbonic anhydrase catalyses the interconversion of CO2 and HCO3- and helps increasing the net-CO2 concentration inside cells. Why? CO2-reducing enzymes like RuBisCO are notoriously slow and ineffective. However, import of HCO3- is typically coupled to ATP consumption...

Anuj reposted

This is a proud and exciting moment for me. Manon continues to redefine our understanding of pyrenoid biology, as she pushes the frontiers of #TeamTomo straight into the natural world around us 🌍🌊🌾🔬 Her new group at @gmivienna.bsky.social will explore fresh and impactful questions. Check it out! 🧪👩‍🔬

Manon Demulder@manondemulder.bsky.social

Excited to announce I’m starting a new lab at @gmivienna.bsky.social (Vienna BioCentre) in Sept 2026 We study how carbon fixation is inherited and maintained in algae using cryo-ET, imaging, environmental sampling&more Looking for people who want to build the lab together, get in touch! #teamtomo

Anuj reposted

Anuj reposted

New preprint by @alok-bharadwaj.bsky.social explaining the workings of SURFER, a simple tool to segment membrane, micelle or nanodisc densities in cryoEM maps. Try it via the @chimerax.ucsf.edu ToolShed: cxtoolshed.rbvi.ucsf.edu/apps/chimera... Despite LocScale in the name, it works on any map.

cryoEM papers@cryoempapers.bsky.social

Interactive segmentation of membrane and membrane mimic densities in cryo-EM maps www.biorxiv.org/content/10.64898/2026.02.25.707988v1 #cryoEM

Anuj reposted

At long last, the Chlamy chloroplast ribosome hat 🎩 (now renamed the arm 💪) is here to say hello👋! We first spotted this extended structure in green algae a decade ago, and @florentwaltz.bsky.social did beautiful work bringing it into focus! #CryoEM ❄️ #TeamTomo 🔬 #PlantScience 🌾 #ProtistsOnSky 🧪

Florent Waltz@florentwaltz.bsky.social

Long in the making, but happy to present the Chlamydomonas chlororibosome! Cryo-ET🔬reveals a large new domain on the small subunit, built from multiple extensions in conserved ribosomal proteins. bioRxiv 📖: shorturl.at/q44tG This suggests greater chlororibosome diversity than expected! 1/n 🧵

Anuj reposted

Replying to @drellisdon.bsky.social

An incredibly challenging single particle cryo-EM structure. Capturing both the N and C termini was difficult enough, but the project required a major effort to resolve the full length protein structure to capture the overall architecture of the KICSTOR-GATOR1 complex. Well worth it in the end!

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