Now, researchers have opened the floodgates to doing much more. They report today that a broad rewrite of a bacterium’s genome lets them add numerous novel amino acids to one protein. The work could open new ways to synthesize antibiotics and antitumor drugs. “I am very impressed by this paper,” says Chang Liu, [biomedical engineering associate professor] at the University of California, Irvine. “It’s a significant milestone in the arc of genetic code re-engineering.” Read More