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Roberto Vázquez Núñez

@robertovn.bsky.social
87 followers 114 following 8 posts

Postdoc at Seychelle Vos lab, MIT Biology. Biochemist, interested in transcription and chromosome organization 🇲🇽

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Reposted by Roberto Vázquez Núñez
Svetlana Dodonova @dodonova-sveta.bsky.social · 30/09/2026
New preprint from Dodonova lab 🔔! Capturing multiple states by cryo-EM❄️, we show for the first time how archaeal RNA Polymerase engages a nucleosome and forms direct contacts with histones! 🧬 Great work by Gabriele & a fantastic collaboration with Dina Grohmann! 🧵 www.biorxiv.org/content/10.6...
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Reposted by Roberto Vázquez Núñez
Abdallah Mohamed @amohamed98.bsky.social · 08/09/2026
New preprint: in the last bit of my graduate work in the @voslab.org, we describe the mechanism for how BRD4 engages with P-TEFb in the context of regulating early RNA Pol II elongation. Read more here: www.biorxiv.org/content/10.6...
biorxiv.org
Structural basis for P-TEFb association with BRD4
Cyclin-dependent kinases (CDK) dynamically regulate RNA Polymerase (Pol) II during each stage of transcription. Phosphorylation of RNA Pol II and associated transcription factors by CDKs enables stage...
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Reposted by Roberto Vázquez Núñez
Seychelle Vos @voslab.org · 08/09/2026
⚡Preprint alert⚡ So proud of @amohamed98.bsky.social! Abdallah determined the cryo-EM structure of BRD4 bound to the kinase P-TEFb, defining the molecular basis of this key transcription interaction — and revealing that BRD4 and AFF4 binding are mutually exclusive to P-TEFb. Lots more inside 👇
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Roberto Vázquez Núñez @robertovn.bsky.social · 03/09/2026
See you on Wednesday!!
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Reposted by Roberto Vázquez Núñez
FragileNucleosome @fnucleosome.bsky.social · 03/09/2026
🎤 #FragileNucleosome is back next Wednesday! Hope you enjoyed the summer!Join us next 📅Wednesday to hear about 🧬fascinating research from @mpalamin.bsky.social from Krebs lab and @robertovn.bsky.social from Vos lab. To register if you haven't before: us06web.zoom.us/webinar/regi...
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Hopfner Lab @hopfnerlab.bsky.social · 02/09/2026
🧵 We’re excited to share our new bioRxiv preprint on how INO80 reads promoter-proximal DNA sequence features to position +1 nucleosomes 🧬 Amazing work by Mariia, Annika, and others! 🤩 🔗 www.biorxiv.org/content/10.6... #ChromatinBiology #StructuralBiology #Nucleosome #INO80
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Yukti Dhingra @yuktidhingra.bsky.social · 05/07/2026
Happy to share the first paper from my postdoc in the Darst and Campbell labs! 🧵 www.pnas.org/doi/full/10.... We used cryo-EM and allosteric inhibitors as mechanistic probes to visualize conformational landscapes of E. coli and M. tuberculosis RNA polymerases during nucleotide addition. 1/4
pnas.org
RNA polymerase inhibitors reveal active-site motions essential for the nucleotide addition cycle | PNAS
The nucleotide addition cycle (NAC) of multisubunit DNA-dependent RNA polymerases (RNAPs) involves coordinated conformational changes in conserved ...
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Reposted by Roberto Vázquez Núñez
Hannah @hannahkurka.bsky.social · 01/07/2026
The OMB’s proposals will give the president shocking control over who can get scientific funding and what it can be used for. We need to flood the comment section before July 13th. Read more and submit your comment here: elkodaily.com/news/local/c... www.regulations.gov/commenton/OM...
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Reposted by Roberto Vázquez Núñez
Craig Kaplan @triggerloop.bsky.social · 29/06/2026
The Kaplan Lab at the University of Pittsburgh has received funds to recruit a postdoctoral fellow to establish a multiplexed assay of variant effect for a disease gene. This relates to our studies on RNA Polymerase II. This project requires experience with human cell lines and genomics 1/
cfopitt.taleo.net
Post Doctoral Associate
Click the link provided to see the complete job description.
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FragileNucleosome @fnucleosome.bsky.social · 17/06/2026
We just started our summer break, but we're also planning our September-December seminar schedule! If you have an exciting chromatin/transcription story that will be ready for the spotlight by then, use the survey below to nominate yourself to give a #FNucleosome talk 🧬🧬 forms.gle/1EKYN2Nt79ar...
forms.gle
Application to speak in the Fragile Nucleosome series
Thank you for your interest in our seminar series! We use a variety of different session formats but, in general, trainees can plan for a ~15 min talk + 5min Q/A and PIs can plan for a ~25min talk +...
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Roberto Vázquez Núñez @robertovn.bsky.social · 12/06/2026
Glad to have presented my postdoctoral work from the @voslab.org lab in the last machines on genes conference. Thank you to the organizers and to the @biochemsoc.bsky.social for the opportunity and for bringing us to beautiful Crete. #Biochemevents
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Reposted by Roberto Vázquez Núñez
Rob Klose @robklose.bsky.social · 29/05/2026
Help please! We need to do some large(ish) cell culture inhibiting E-cadherin with a monoclonal antibody. Does anyone have the DECMA-1 hybridoma cell line so we could purify our own antibody? or a similar monoclonal that would do the job. Any help greatly appreciated, just DM me. Please repost!
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Roberto Vázquez Núñez @robertovn.bsky.social · 29/05/2026
🚨 New preprint: GATO-seq did it again! ELOF1 is the missing promoter-proximal factor that confers RNA Pol II resistance to TFIIF. Including ELOF1, DSIF, and NELF in GATO-seq reactions recapitulates promoter-proximal pausing in vitro at physiological conditions for the 1st time. tinyurl.com/ELOF1
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Reposted by Roberto Vázquez Núñez
Hannah @hannahkurka.bsky.social · 25/02/2026
It's long overdue, but I'm back to writing about science, starting with how science gets funded (aka grants). "Fun" fact: even before current cuts to science funding, less than 1% of the federal budget went to science grants. elkodaily.com/news/local/a...
A graphic accompanying an article about science funding. It shows a pie chart representing the 2024 Federal Budget with a tiny sliver taken up by science grants. It also shows a flow diagram demonstrating how scientists get grants. Scientists iteratively work on experiments that inform grant proposals and vice versa. These grant proposals are submitted to a review panel which can ultimately lead to scientific funding if you are lucky.
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Molecular Cell @cp-molcell.bsky.social · 23/02/2026
Cell-free genomics reveals fundamental regulatory principles of the Mycobacterium tuberculosis transcription cycle
dlvr.it
Cell-free genomics reveals fundamental regulatory principles of the Mycobacterium tuberculosis transcription cycle
Froom et al. address a central challenge in gene regulation: untangling direct effects from indirect cellular network effects. They introduce cell-free genomics, a genome-scale biochemical approach that isolates direct transcription mechanisms. Applied to Mycobacterium tuberculosis, it reveals fundamental principles of transcription initiation and termination with broad relevance.
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Seychelle Vos @voslab.org · 19/02/2026
🚨New preprint! We built a cell-free genomics platform (GATO-seq) to probe transcriptional regulation and discovered a “super pause” sequence that triggers a new Pol II active-site conformation. Huge shout-out to @robertovn.bsky.social for pulling off this monster of a project. tinyurl.com/superpause
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Roberto Vázquez Núñez @robertovn.bsky.social · 19/02/2026
Preprint alert 🚨Happy to share my first Posdoc manuscript from the Vos lab @voslab.org. We introduce GATO-seq, a high-throughput, fully in vitro technique that maps RNA polymerases at base pair resolution over time. Using it, we found a new pause state of Pol II: sidetracking tinyurl.com/superpause
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Stephan Gruber @gruberlab.bsky.social · 09/10/2025
How do SMC complexes load onto DNA to get ready for loop extrusion? @roisnehamelinf.bsky.social & co discovered that Wadjet, an SMC complex involved in bacterial DNA immunity, performs some impressive molecular gymnastics 🤸‍♂️🤸‍♂️🤸‍♂️. Check out the new paper: www.cell.com/molecular-ce...
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European Research Council (ERC) @erc.europa.eu · 27/07/2025
🧬 Ever wonder how metres of #DNA 🧬 fit into a single cell? @gruberlab.bsky.social, working at @unil.bsky.social uncovered how protein machines fold DNA into loops – key for cell division & genome stability. Learn more 👉 buff.ly/PrfdXnr #BioTech #Chromosomes #Crystallography #GeneEditing 🧪
europa.eu
Cracking the code of DNA folding machines
New research has helped to explain how DNA is shaped into loops, a process critical for ensuring chromosomes are properly distributed...
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Hannah @hannahkurka.bsky.social · 05/07/2025
We wrapped up our most successful year to date at Symbiotic STEM! Check out what we accomplished at symbioticstem.org 🌱🌱
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