Grant Rotskoff

@grant.rotskoff.cc

Statistical mechanic working on generative models for biophysics and beyond. Assistant professor at Stanford. https://statmech.stanford.edu

The plan at FutureHouse has been to build scientific agents for discoveries. We’ve spent the last year researching the best way to make agents. We’ve made a ton of progress and now we’ve engineered them to be used at scale, by anyone. Free and on API.

What an incredibly cool paper! While knot theory strictly applies to closed curves, Tommy, @smnlssn.bsky.social , and @paulrobustelli.bsky.social show that writhe, a knot "non-invariant" that changes with smooth deformations, provides a meaningful descriptor for flexible conformations.

Paul Robustelli@paulrobustelli.bsky.social · last yr.

Presenting one of my favorite manuscripts I've ever worked on: "Characterizing structural and kinetic ensembles of intrinsically disordered proteins using writhe" www.biorxiv.org/content/10.1... by Tommy Sisk, with a generative modeling component done in collaboration with @smnlssn.bsky.social

I am hiring a postdoctoral scholar with a start date summer or fall 2025. Projects will be focused on thermodynamically consistent generative models, broadly defined. If you’re interested, please send a CV and one paragraph about why you think you’d be a good fit to rotskoff@stanford.edu

Chemists use NMR spectroscopy to identify molecules, but interpreting spectra is laborious and error prone. We show the process can be automated end-to-end using a well-designed Molecular GPT. Importantly, we also make predictions of substructures for interpretability. pubs.acs.org/doi/10.1021/...

Accurate and Efficient Structure Elucidation from Routine One-Dimensional NMR Spectra Using Multitask Machine Learning

Rapid determination of molecular structures can greatly accelerate workflows across many chemical disciplines. However, elucidating structure using only one-dimensional (1D) NMR spectra, the most readily accessible data, remains an extremely challenging problem because of the combinatorial explosion of the number of possible molecules as the number of constituent atoms is increased. Here, we introduce a multitask machine learning framework that predicts the molecular structure (formula and connectivity) of an unknown compound solely based on its 1D 1H and/or 13C NMR spectra. First, we show how a transformer architecture can be constructed to efficiently solve the task, traditionally performed by chemists, of assembling large numbers of molecular fragments into molecular structures. Integrating this capability with a convolutional neural network, we build an end-to-end model for predicting structure from spectra that is fast and accurate. We demonstrate the effectiveness of this framework on molecules with up to 19 heavy (non-hydrogen) atoms, a size for which there are trillions of possible structures. Without relying on any prior chemical knowledge such as the molecular formula, we show that our approach predicts the exact molecule 69.6% of the time within the first 15 predictions, reducing the search space by up to 11 orders of magnitude.

pubs.acs.org