Scientists Just Built Brand-New Enzymes From Scratch — And They Cut Proteins Like Nature Does
Researchers have designed working protein-cutting enzymes entirely on a computer, the first time this has been done without copying anything from nature. The breakthrough could lead to custom medicines and cleaner industrial processes.
For the first time, scientists have built working enzymes from scratch — designing them entirely on a computer without copying any natural template [263186][263187]. The enzymes belong to a class called proteases, proteins that cut other proteins apart, and they worked exactly as intended when tested in the lab [263186].
The team used a method called de novo design, which means creating a protein from zero rather than modifying one found in nature [263186]. Software predicted how chains of amino acids would fold into the right shapes, and the scientists then tested the designs in the lab [263186][263187].
One focus was cysteine proteases, a family of enzymes that cut proteins and play a major role in drug development and biotechnology [263186]. Until now, scientists mostly modified enzymes found in nature; this time, the designs had no natural starting point at all [263186][263187].
A second effort produced a metalloprotease, an enzyme that uses a metal atom to cut other proteins [263187]. These enzymes matter because the human body relies on them for nearly everything, from breaking down food to repairing tissue — yet every known metalloprotease came from a living thing until now [263187].
The findings were published in a peer-reviewed journal, and independent experts called the result a milestone, though practical uses remain years away [263187]. The work opens the door to enzymes tailored for specific tasks, such as drugs that target disease-causing proteins or factories running cleaner chemical reactions [263186][263187].
Experts say the approach could speed up the discovery of new treatments and reduce the need to search nature for rare enzymes [263186].