Researchers use AI to break the rules of nature and create a living organism with barely any amino acids (www.techradar.com)

Researchers from Columbia University, MIT, and Harvard have achieved a groundbreaking milestone by using AI to create a strain of E. coli with only 19 amino acids, specifically omitting isoleucine, which is one of the universal amino acids necessary for life. This discovery is significant as it marks the first known organism to function with fewer than 20 amino acids, challenging the traditional understanding of life's building blocks and supporting theories that early life forms may have used a simpler genetic code. The AI-driven approach involved predicting alternative protein structures to successfully modify the ribosome—responsible for protein synthesis—without isoleucine, leading to 18 viable strains of modified E. coli. This innovation not only paves the way for enhanced understanding of evolutionary biology but also has significant implications for synthetic biology, potentially leading to customized organisms designed for specific healthcare applications and extreme environments. As the research advances, AI-assisted genetic modification could enable the development of organisms better suited for tasks in unusual settings, including future space habitats, where access to a full array of amino acids may be limited.