AI Insight
Researchers have successfully designed cysteine proteases from scratch that can cleave polypeptide chains in a sequence-specific manner. These de novo enzymes utilize an activated cysteine residue as a nucleophile to catalyze the hydrolysis of peptide bonds along protein backbones. The work demonstrates the ability to computationally design functional proteolytic enzymes with controllable substrate specificity.
Why it matters
This achievement advances protein engineering capabilities and could enable the development of custom-designed enzymes for targeted protein degradation in therapeutic applications, biotechnology, and research tools. The ability to create proteases with designer specificity may lead to new treatments for diseases involving protein misfolding or overexpression.
Understand the Science
Nature, Published online: 14 October 2026; doi:10.1038/s41586-026-11143-w
De novo-designed enzymes use an activated cysteine nucleophile to hydrolyse polypeptide backbones in a sequence-dependent manner.