Di Wang

A protein language model is like a chef who learned from thousands of recipes and now invents new dishes. Sometimes he gets carried away and salts every dish because one good cookbook used a lot of salt. In proteins, such repetition isn't just ugly: identical stretches in the chain make the protein fragile, it can't fold into the right shape, and it doesn't work.

Our body's tissue is like a city: different neighborhoods are home to different cells, each with its own job. To understand how this city is organized, biologists take images showing which genes are active at each spot. But sharp images are expensive, and cheap ones come out blurry, like a photo of a city from high above, where individual buildings are hard to make out.

When a key slides into a lock, it's not just the shape of the teeth that matters, but also how they press against the pins. In the world of drugs, hydrogen bonds play the role of these 'pressers'—weak but numerous bridges between the drug molecule and the target protein. They decide whether the drug holds on or slips off.