Enhanced Sampling and Tailored Collective Variables Yield Reproducible Free Energy Landscapes of Beta-1 Adrenergic Receptor Activation
The beta-1 adrenergic receptor (ADRB1) is a critical target for cardiovascular drugs, yet our understanding of how it is activated remains incomplete. Capturing the concerted interplay of agonists, solvent, ions, and protein microswitches is a significant challenge for conventional simulation methods and is essential for unraveling this process. Here, we address this challenge by implementing a powerful enhanced sampling framework that integrates the OneOPES enhanced sampling algorithm with a set of biologically motivated collective variables (CVs). These CVs are designed to track several key features of the activation process simultaneously, including rearrangement of conserved microswitches, the state of the sodium ion binding pocket, and dynamics of critical water molecules. Using this framework, we mapped the multidimensional free energy landscapes of the ADRB1 receptor in both its apo- and adrenaline-bound holo states. Our analysis reveals a detailed, stepwise activation pathway that quantifies the known modulatory roles of sodium ions and protonation states and identifies essential water-mediated networks that stabilize the active conformation. This work provides a detailed overview of ADRB1 activation and establishes the robustness of our OneOPES approach for investigating complex activation mechanisms with the potential for application to other Class A GPCRs.
New in @pubs.acs.org JCTC: We've mapped the complete activation pathway of the Ξ²1-adrenergic receptor using our OneOPES enhanced sampling method and tailored CVs. Our approach reveals how sodium ions, water networks & protein microswitches work together. pubs.acs.org/doi/full/10.... #GPCR
01.08.2025 11:59 β π 5 π 2 π¬ 0 π 0
Happy to share the latest work from the lab, led by @mudgal17.bsky.socialβ¬, in collaboration with the Weis lab @ethzurich.bsky.social.
How do nuclear membranes fuse during NPC assembly? We answer this question in our latest work, where we identify a new mechanism for membrane fusion⦠(1/13)
23.07.2025 11:40 β π 138 π 37 π¬ 4 π 3
No, AlphaFold has not completely solved protein folding
Biology is hard. Yes, even for AI.
AlphaFold is great, but contrary to public opinion it has not completely solved the protein folding problem. Much work remains to be done.
clauswilke.substack.com/p/no-alphafo...
12.07.2025 18:19 β π 125 π 67 π¬ 3 π 6
Can the US afford to lose its 1.1 million international students?
International students contributed $43.8bn to the US economy last year and created 378,175 jobs nationwide.
βthe 1.1 million international students studying in the US contributed $43.8bn to the US economy during the 2023β2024 academic year, creating 378,175 jobs nationwide.β
www.aljazeera.com/news/2025/6/...
06.06.2025 10:37 β π 177 π 107 π¬ 6 π 13
Great to see our collaborative work featured by @irbbarcelona.org!
β‘οΈ Read more here: bit.ly/42LlJm9
π Read the full article: rdcu.be/ef6YX
π Support our statement: bit.ly/3zVS3qm
#MDDB #FAIRdata #OpenScience #MolecularDynamics
06.05.2025 12:53 β π 8 π 4 π¬ 0 π 0
On the design space between molecular mechanics and machine learning force fields
A force field as accurate as quantum mechanics (QMs) and as fast as molecular mechanics (MMs), with which one can simulate a biomolecular system efficiently eno
Force fields with QM accuracy and MM speed are the theoretical biophysicist's Philosopher's Stone. I used ANIX2 with OpenFF and OpenMM. The results were insightful but at the expense of huge computational costs. #MLFF #biophysics #moleculardynamics
05.04.2025 10:48 β π 11 π 6 π¬ 0 π 0
Andrew Chen, co-founder of one of my favorite denim brands, 3sixteen, breaks down how the tariffs affect his company
IG 3sixteen
05.04.2025 11:46 β π 15362 π 4792 π¬ 297 π 376
Very proud of our new review article on the Beta 1-Adrenergic GPCR now available on bioRxiv: www.biorxiv.org/content/10.1....
With @saureli.bsky.social @valeriorizzi.bsky.social and Nicola we used OneOPES to fully converge the free energy landscapes associated with B1AR apo/holo activation.
12.03.2025 13:27 β π 14 π 7 π¬ 0 π 0
EMBL International PhD Programme β Unique in the world and waiting for you!
EMBL has a single PhD application where a student can apply to any of our 80 labs in our 6 sites, with applications twice a year--the next March 10th! No need for MS, no application fee. Ranked 13th in the world on basis of publications, with emphais on junior faculty
www.embl.org/about/info/e...
01.03.2025 12:29 β π 41 π 21 π¬ 2 π 0
How Trump 2.0 is reshaping science
Since US President Donald Trump took office in January 2025, his team has made major changes to the federal government that have disrupted research and ...
Since US President Donald Trump took office last month, his team has made major changes that have disrupted research and research institutions in the US and beyond. Follow our coverage of the Trump administration's impact on science around the world:
https://go.nature.com/3QGKmJu
27.02.2025 16:13 β π 86 π 42 π¬ 9 π 5
Awesome paper!
BioEmu from MSR: Scalable emulation of protein equilibrium ensembles with generative deep learning www.biorxiv.org/content/10.1...
Looking forward to hearing more explanainers in tomorrow's reading group session on zoom at 9am PT / 12pm ET / 6pm CET: portal.valencelabs.com/logg
12.01.2025 17:22 β π 47 π 12 π¬ 1 π 0
Redirecting
Our new review article on "Computational advances in discovering cryptic pockets for drug discovery" is now available on COSB doi.org/10.1016/j.sb...
In collaboration with Pande's lab at JnJ and Cournia's lab at BRFAA we reviewed the state of the art in silico tools for studying cryptic pockets.
09.01.2025 13:48 β π 5 π 1 π¬ 0 π 0
We are searching for a Research Assistant/Bioinformatician at @irbbarcelona.org
bbglab.irbbarcelona.org/2024/12/job-...
#IRBJobs
20.12.2024 16:02 β π 5 π 5 π¬ 0 π 2
π
08.12.2024 15:50 β π 1 π 0 π¬ 0 π 0
Super excited to preprint our work on developing a Biomolecular Emulator (BioEmu): Scalable emulation of protein equilibrium ensembles with generative deep learning from @msftresearch.bsky.social ch AI for Science.
www.biorxiv.org/content/10.1...
06.12.2024 08:38 β π 440 π 147 π¬ 21 π 29
I'm excited to share a new manuscript with Jiaqi Zhu characterizing the conformational ensembles of covalent adducts formed by a disordered protein and small molecule drugs:
biorxiv.org/content/10.1...
Code + Ensembles:
github.com/paulrobustel...
24.11.2024 17:27 β π 25 π 9 π¬ 1 π 0
One PhD thesis in integrative structural biology | Research - Institut Pasteur
Do you want to work at the interface of molecular simulations, structural biology experiments and #AI? Come to Paris for a PhD at @pasteur.fr 1 PhD position is available in our lab funded by ERC_Research. Please repost!! #compchem #compbio Info π research.pasteur.fr/b/15Hr
06.12.2024 08:31 β π 53 π 40 π¬ 1 π 1
Nice work!
06.12.2024 06:44 β π 0 π 0 π¬ 0 π 0
Jobs
-
Hello! I'm posting this both here and on the X-rated site, let's see where it gets more re-posts π. We are looking for a research software engineer to help us develop (even) better code for #compchem #atomicscale #machinelearning. Check out the specs and apply!
www.epfl.ch/labs/cosmo/i...
03.12.2024 11:56 β π 60 π 53 π¬ 3 π 1
Very excited to present the structural and mechanistic basis for stress response silencing by the monster E3 ligase SIFI.
www.biorxiv.org/content/10.1...
03.12.2024 07:05 β π 116 π 35 π¬ 8 π 3
Conclusions of assessment of 3D category
Assessorsβ conclusions of the 3D category (individual protein chains) of #CASP16 π§ͺ
02.12.2024 14:22 β π 25 π 11 π¬ 0 π 0
Conclusion slide of oligomer prediction assessment
#CASP16 assessorsβ summary of the protein complex category π§ͺ π§¬
02.12.2024 15:24 β π 30 π 12 π¬ 1 π 0
Figure from the preprint "A coarse-grained model of disordered RNA for simulations of biomolecular condensates" showing re-entrant phase separation of MED1-IDR and a disordered RNA, and partitioning of IDRs from HP1a and SPT6.
While the preprint is sitting in a thanksgiving queue at bioRxiv, let me just give you a teaser for RNA-CALVADOS in work led by Ikki Yasuda
28.11.2024 22:20 β π 35 π 3 π¬ 0 π 1
Good to have you here! I also recently moved here. Have you tried Sky Follower Bridge? It can help rebuild the network.
26.11.2024 20:04 β π 1 π 0 π¬ 1 π 0
Our first #openreview has been published! disq.us/t/4r5064p Olivier Languin-CattoΓ«n and
@bussigio.bsky.social reviewed a #preprint by Guillaume Stirnemann and Glen Hocky on catch bonding behavior in vinculin-actin unbinding kinetics
20.11.2024 07:57 β π 14 π 3 π¬ 0 π 0
Professor a NYU; Chief AI Scientist at Meta.
Researcher in AI, Machine Learning, Robotics, etc.
ACM Turing Award Laureate.
http://yann.lecun.com
A group of computational chemists at UCLA. We study catalysts, materials, and complex (bio)molecular systems (and make them better!).
Student-run account.
https://www.chem.ucla.edu/~ana/
Bringing unparalleled #accuracy and precision to #drugdiscovery and design, using #quantumphysics to develop life-changing treatments for major diseases.
Visit our website: https://www.qubit-pharmaceuticals.com/
Computational Chemist. Theoretical Biophysicist (physics-based modelling). Protein Dynamics. Unconventional Computing. Metalloproteases.
PhD from @sorbonne-universite.fr now postdoc at IIT. Doing machine learning to study physical and chemical transformations(He/Him)
Angewandte Chemie, a journal of the German Chemical Society (@gdch.de), is a leading journal in #chemistry published by Wiley-VCH (@wiley.com) in Weinheim, Germany
https://onlinelibrary.wiley.com/journal/15213773
MLxBio @vant_ai. Previously, research @Twitter and FabulaAI (acquired by Twitter). PhD in Graph ML at @imperialcollege and @Cambridge_Uni alumnus
Computational biophysicist - enhanced sampling molecular dynamics, membrane proteins, computer-aided drug discovery
Further interests in philosophy of science, science communication and jazz music
With the future of the world in the balance, everyone has a role to play in making it better. How will you join in?
π Website: www.rsc.org
Computational Medicinal Chemist
Post-doctoral researcher
University of Urbino
https://palermolab.com
Giulia Palermo Lab at the University of California, Riverside. Biophysicist passionate about Science & Art! In love with Nucleic Acids and Computational Science!
European Research Council, set up by the EU, funds top researchers of any nationality, helping them pursue great ideas at the frontiers of knowledge. #HorizonEU
The Royal Society is a Fellowship of many of the world's most eminent scientists and is the oldest scientific academy in continuous existence.
Investigative journalism π΅οΈ, politics π³οΈ, chart-tastic π, and sometimes sarcastic πππ€ͺ
Join our people-powered nonprofit newsroom: motherjones.com/subscribe
Research, news, and commentary from Nature, the international science journal. For daily science news, get Nature Briefing: https://go.nature.com/get-Nature-Briefing
Cutting-edge research, news, commentary, and visuals from the Science family of journals. https://www.science.org
(He/Him) #compchem, with a big passion for unicorns π¦
Head of the Dioscuri Centre for Modelling of Posttranslational Modifications.
MIT PhD Student - ML for biomolecules - https://hannes-stark.com/
CSO @ Resonate Bio | Vienna - Austria
π§² NMR Spectroscopy in Drug Discovery and Design | Structural Chemistry | Molecular Recognition