Terra Sztain

@terrasztain.bsky.social

Assistant Prof. Medicinal Chemistry and Biophysics @UMich | Dynamics and AI guided molecular design https://pharmacy.umich.edu/sztainlab

Currently interviewing candidates for Lab Manager Position * expertise conducting high impact research with protein NMR spectroscopy required. * this should be demonstrated by multiple first author publications.

PhD student in the lab, Daniel Santos Perez gave his first poster presentation today at the Midwest Theoretical Chemistry Conference! Titled "Weighted ensemble enhanced sampling for the elucidation of drug binding pathways"

1) Free diffusion 2) electrostatic steering 3) encounter complex 4) energy barrier crossing 5) bound complex

This is the moment we've worked toward for a long time: First public disclosure of the @asapdiscovery.bsky.social pan-coronavirus antiviral aiming to help keep humanity safe from future pandemic threats like MERS-CoV and other bat coronaviruses.

Drugs for Neglected Diseases initiative (DNDi)@dndi.org · 2y ago

📢Important announcement! Today, the @asapdiscovery.bsky.social consortium disclosed the structure of our preclinical candidate, ASAP-0017445, a promising broad-spectrum antiviral with potent activity against SARS-CoV2 and other viruses belonging to the same family. (1/10)

regarding Columbia University, I just learned about this (anonymous) account of negotiations of the Hitler regime in the 1930s with Frankfurt University -- Germany's most prestigious university at the time:

Bild

This breaks my heart. My salary at St. Jude was paid through our comprehensive cancer center grant. My wife's oncologist is at a comprehensive cancer center. Millions of children and adults with cancer get treatment in these 57 centers around the country. These are essential locations for research.🧪

Soragni:Lab@alice.soragnilab.com · 2y ago

The NCI grant supporting the Columbia comprehensive cancer center was terminated. Tell me how terminating support for cancer research helps the economy. taggs.hhs.gov/Content/Data...

Everything is chaos, but I wanted to share some awesome recent science from the lab that hints at where the future of biomolecular simulation is headed: Foundation simulation models that can be fine-tuned to experimental free energy data to produce systematically more accurate predictions.

Figure 1 from arXiv preprint https://doi.org/10.1101/2025.01.06.631610

Fig. 1 Espaloma is an end-to-end differentiable molecular mechanics parameter assignment scheme for arbitrary organic molecules. Espaloma (extensible surrogate potential optimized by message-passing) is a modular approach for directly computing molecular mechanics force field parameters FFF from a chemical graph G such as a small molecule or biopolymer via a process that is fully differentiable in the model parameters FNN. In Stage 1, a graph neural network is used to generate continuous latent atom embeddings describing local chemical environments from the chemical graph. In Stage 2, these atom embeddings are transformed into feature vectors that preserve appropriate symmetries for atom, bond, angle, and proper/improper torsion inference via Janossy pooling.54 In Stage 3, molecular mechanics parameters are directly predicted from these feature vectors using feed-forward neural networks. This parameter assignment process is performed once per molecular species, allowing the potential energy to be rapidly computed using standard molecular mechanics or molecular dynamics frameworks thereafter. The collection of parameters FNN describing the espaloma model can be considered as the equivalent complete specification of a traditional molecular mechanics force field such as GAFF38,39/AM1-BCC55,56 in that it encodes the equivalent of traditional typing rules, parameter assignment tables, and even partial charge models. Reproduced from ref. 49 with permission from the Royal Society of Chemistry.

Please wake up USA--we cannot just say "whoops" and hit the rewind button. These actions will lead to decades of irreversible devastation to our planet and future generations if they are not halted immediately. Enough is enough (3/3)