# Researchers use AI to design proteins that cut up other proteins

- Published: 2026-10-14T17:10:15.000Z
- Updated: 2026-10-14T22:11:39.165Z
- Section: Models
- Topics: Research
- Page: https://aidailyjournal.com/en/n/2026/10/14/researchers-use-ai-to-design-proteins-that-cut-up-other-proteins/
- Sources: [Ars Technica](https://arstechnica.com/science/2026/10/researchers-use-ai-to-design-proteins-that-cut-up-other-proteins)

## Summary

Researchers, primarily from David Baker’s lab at the University of Washington, used AI-based protein design tools to replace most of two types of protease while preserving their catalytic cores. The resulting enzymes can be tuned to cut specific proteins, Ars Technica reports.

The tests demonstrated the ability to cut proteins associated with neurological diseases. The work explores two mechanisms: one uses zinc to activate a water molecule that breaks the peptide bond; the other uses the amino acid cysteine to attack the bond and form a temporary intermediate. Without a catalytic enzyme, a typical peptide bond can remain stable in water for hundreds of years.

## Why it matters (editorial interpretation)

The work suggests that protein-design tools can tailor enzymes to target specific proteins, expanding possibilities for research on neurological diseases. The tests still describe an experimental exploration, not a proven clinical application.

_Summary written by AI Daily Journal in its own words, based on the sources above. For details, read the original articles._