@BeckmannLab

No longer updating this account. Find us @beckmannlab.🦋.social

 München, Bayern
genzentrum.uni-muenchen.de/research-groups/beckmann/index.html
Joined April 2018
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Read Rosales-Hernandez et al. doi.org/10.1038/s44318-025-0… and Zerbes/Colina-Tenorio et al. doi.org/10.1038/s44319-024-0… to find out about delivery of the Rieske protein after Bcs1 transport to Mar26 and MICOS for bc1 complex assembly.

Mechanistic insights into Bcs1-mediated mitochondrial membrane translocation of the folded Rieske...

The EMBO Journal - A functional mitochondrial respiratory chain requires coordinated and tightly regulated assembly of mitochondrial- and nuclear-encoded subunits. For bc1 complex (complex III)...

link.springer.com
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Our results finally explain the essential role of snR30 snoRNA! Check out the details in our preprint to find out more 👉👉👉 biorxiv.org/content/10.1101/… #ribosome #cryoEM #RNA

H/ACA snoRNP guides ribosomal RNA subdomain folding in a satellite particle before joining the core...

During synthesis, modification and maturation of the ribosomal RNA, correct subdomain folding without additional guidance poses a major challenge. An essential H/ACA snoRNP, snR30, was observed to be...

biorxiv.org
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First structure of a H/ACA snoRNP acting in ribosome synthesis. In a great collaboration with the Hurt lab, we provide a detailed structural and biochemical view of the snR30 snoRNP guiding local 18S rRNA subdomain folding. 👇👇👇
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Authors including @jingdongcheng report cryo-EM structures revealing how antibiotic tigecycline can also target human mitoribosome. nature.com/articles/s41467-0…
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Also check out the paper by @zeqiraj and @YKulathu: nature.com/articles/s41586-0…
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Fresh out of the oven, our collaboration with the Kopito Lab - UFL1(E3) modifies, binds to, and dissociates the 60S subunit from the Sec61 translocon! #ribosome #cryoEM
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Replying to @IsraelF96135088
Negroni?
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Replying to @petesoi1 @ERC_Research @CEITEC_Brno
Congratulations Petr, all the best!
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Otu2 can bind to 40S during cytoplasmic ribosome biogenesis and all stages between ribosome recycling and start-codon recognition, but becomes a highly specific enzyme for translational reset during recycling/(re)initiation by removing mono-ubiquitin present on eS7.
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We also solved the crystal structure of the OTU domain of Otu2 and showed how it recognizes and deubiquitinates eS7 with Lys83-linked monoubiquitin. This binding mode explains the discrimination against 80S ribosomes and the specificity for mono-ubiquitinated eS7 on 40S.
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We used cryo-EM to visualize native and reconstituted Otu2-bound ribosomal complexes at different stages of translation. We found that Otu2 binds to 40S subunits mainly between ribosome recycling and initiation stages.
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Otu2 is a deubiquitinating enzyme that removes ubiquitin from eS7, a ribosomal protein of the 40S subunit. Ubiquitination of eS7 by Not4 E3 ligase occurs during active translation and affects translation efficiency. However, the role and mechanism of Otu2 are poorly understood.
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🎉We are thrilled to share our exciting new collaboration with @inada_lab and @jingdongcheng on how Otu2 recognizes and deubiquitinates 40S ribosomes after translation. Here is a thread with the most interesting findings:👇 #ribosome #ubiquitin #cryoEM
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Beckmann Lab retweeted
Green Lab@GreenLabJHMI7 May 2023
Turns out MutS2 just doesn’t cut it ✂️ despite it having an SMR domain! Our latest collaboration with the @BeckmannLab characterizing the role of MutS2 in splitting stalled ribosomes in B. subtilis. biorxiv.org/content/10.1101/…

B. subtilis MutS2 splits stalled ribosomes into subunits without mRNA cleavage

Stalled ribosomes are rescued by pathways that recycle the ribosome and target the nascent polypeptide for degradation. In E. coli , these pathways are triggered by ribosome collisions through...

biorxiv.org
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Let's rotate! Thanks to the great Hurt lab and @BeckmannLab, our story on the 60S ribosome biogenesis is finally out in EMBO reports. We find the 5S RNP in a new rotate conformation when stably incorporate into the nucleolar pre-60S. #cryoEM #ribosome doi.org/10.15252/embr.202356…
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Beckmann Lab retweeted
QMB Munich@MunichQbm24 Feb 2023
Its online:🥳🎊🎉 Check out the @MathWorksAI user story🍻 de.mathworks.com/company/use… about our (@BeckmannLab, @hopfnerlab) DL based Cryo-EM image analysis tool (nature.com/articles/s41598-0…). Thank you @MathWorks for the great support!👍👍

Ludwig Maximilian University Develops Deep Learning System to Measure Ice Thickness in Cryo-EM...

Ludwig Maximilian University used Deep Learning Toolbox and MATLAB Compiler to create a standalone application that automatically screens ice thickness in cryo-EM samples.

de.mathworks.com
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The Ski2-like helicase 1 subunit applies a pulling force on the mRNA which causes RQT to swivel between two conformations. This leads to the destabilization of the 40S subunit, resulting in subunit dissociation of the leading ribosome.
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The ribosome-associated quality control pathway is activated when ribosomes collide during persistent stalling. The RQT complex splits the stalled ribosome, thus clearing harmful traffic jams in the cell.
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Keeping up the momentum, we're excited to share the final version of our story about RQT-driven ribosomal splitting 🎉 🎉 Shout out to @KaBe__01, @ThomasB08006066, @inada_lab and everyone involved! Read on to learn more👇🏻👇🏻👇🏻 #cryoEM #ribosome #RQT
Beckmann Lab@BeckmannLab20 Apr 2022
Pull the ripcord to clear the traffic jam: RQT splits collided #ribosomes by engaging the emerging mRNA. Check out our new story at #bioRxiv: biorxiv.org/content/10.1101/…
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Thanks again to our wonderful collaborators and to all the people involved @petesoi1 , @R_Buschauer. Find the complete story here: cell.com/molecular-cell/full…

Molecular basis of eIF5A-dependent CAT tailing in eukaryotic ribosome-associated quality control

Tesina et al. use cryo-EM to reveal the structural mechanism of CAT tailing, a key process in degradation of aberrant nascent proteins taking place at the large ribosomal subunit. They reveal common...

cell.com
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