Bou-Nader lab
@bounaderlab.bsky.social
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Our team studies #Rloop & #RNA 🧬 with #biochemistry #cryoEM 🔬❄️ #crystallography💎 to understand how they control life! Views from Charles https://biochem.emory.edu/bou-nader-lab/
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Happy to share the news I've received the Beckman Young Investigator award 🥳 This recognizes the pioneering work done by my mentees to push the barriers of understanding and manipulating #R-loop biology 🧬 grateful for their hard work and for this recognition
Reposted by Bou-Nader lab
Colliding ribosomes are potent signals of cellular stress. But do cells use ‘programmed’ ribosome collisions to regulate gene expression? I’m excited to present a new story from my lab led by Frederick Rehfeld(@fred-rehfeld.bsky.social) which revealed that the answer is YES! Read on to find out how👇
Oxidative stress sensing by the translation elongation machinery promotes production of detoxifying selenoproteins
Selenocysteine, incorporated into polypeptides at recoded termination codons, plays an essential role in redox biology. Using GPX1 and GPX4, selenoenzymes that mitigate oxidative stress, as reporters,...
www.biorxiv.org
Congrats Jason! Well deserved 🎉
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Test the activity of 300+ natural enzymes against 100+ substrates, discover 200+ new enzymatic reactions, and train machine learning models to predict which enzymes can do which reactions.

@aepaton.bsky.social @gabegomes.bsky.social @alisonnarayan.bsky.social

www.nature.com/articles/s41...
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Great work from Michelle Wang’s group at Cornell exploring how RNAP II and associated R-loops act as intrinsic roadblocks during mechanical DNA unzipping. These findings have mechanistic implications for transcription–replication conflict.

rdcu.be/eILVd
RNA polymerase II is a polar roadblock to a progressing DNA fork
Nature Communications - Transcription–replication conflicts can threaten genome stability. Here, the authors show that RNA polymerase II (Pol II) is a stronger roadblock to a DNA fork in the...
rdcu.be
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Thrilled that our work is now finally out in Nature Comms!
rdcu.be/eG3vP

We reveal cryo-EM structures of the MRN complex bound to DNA & TRF2 - showing how DNA breaks are sensed and regulated at telomeres.
Fantastic work by first authors @yilanfan.bsky.social @filizkuybu.bsky.social & Hengjun!
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🚨🧠🔬 A major breakthrough in molecular neuroscience:

I am excited to share a new story from our lab, published in accelerated format today by @nature.com:

"Delta-type glutamate receptors are ligand-gated ion channels"

Read more here (free article link): rdcu.be/eGIKz
Congrats Alexander and team 🎉 starting strong 💪
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This one is a bit of a departure from the usual and definitely a work in progress!

We found that by using ab initio reconstruction at very high res, in very small steps, we could crack some small structures that had eluded us - e.g. 39kDa iPKAc (EMPIAR-10252), below.

Read on for details... 1/x
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Excited to share my postdoc work, out on bioRxiv today! Histones package DNA into nucleosomes to form the building blocks of chromatin, but how modular and programmable is this system? 1/9
Congrats Bret and team 🎉
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Thrilled to share our lab’s latest work in JBC! 🎉 We uncovered a critical role for APE1 Asn174 in stabilizing AP-sites using mutagenesis, enzymology, crystallography, and MD-simulations. Congrats to Kaitlin Dehart and all the co-authors! Check it out: www.jbc.org/article/S002...
APE1 active site residue Asn174 stabilizes the AP-site and is essential for catalysis
Apurinic/Apyrimidinic (AP)-sites are common and highly mutagenic DNA lesions that can arise spontaneously or as intermediates during Base Excision Repair (BER). The enzyme apurinic/apyrimidinic endonu...
www.jbc.org
Big congrats Martin 🎉
Congrats Jeanine and all 🎉 cool work!
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Our study from the Steckelberg lab is out now in @narjournal.bsky.social !! We dove into a new nuclease-blocking viral #RNA structure important for viral infection, which provided evidence of similar structure-based strategies across diverse viral families. academic.oup.com/nar/article/...
A conserved viral RNA fold enables nuclease resistance across kingdoms of life
Abstract. Viral exoribonuclease-resistant RNA (xrRNA) structures block cellular nucleases to produce subgenomic viral RNAs during infection. High sequence
academic.oup.com
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🧬 Transcription elongation by RNA polymerase II relies on a web of elongation factors. Our new work shows how IWS1 acts as a modular scaffold to stabilize & stimulate elongation. Fantastic work by Della Syau! www.biorxiv.org/content/10.1...
Fantastic work Ahmad and team 🎉 congrats to all!
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Want to know how lipidation of some nascent chains takes place by NMT2-- Check our latest work on how NAC couples Protein Synthesis with Nascent Polypeptide Myristoylation on the Ribosome out today @embojournal.org‬: www.embopress.org/doi/full/10....
Big congrats Niladri! Great things ahead and gd luck with the start 🍀
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It is not always safe to repair DNA Damage. Sometimes, cells "just bypass it".

During DNA replication, repair of lesions on DNA can be dangerous. Cells instead "tolerate" DNA damage and focus on finishing replication.

Read our review and find out why and how: doi.org/10.1016/j.ti...