Assuming Wikipedia describes Schultz's work correctly, this is a different achievement. DNA is essentially an instruction set. Each instruction is three base-

Assuming Wikipedia describes Schultz's work correctly, this is a different achievement. DNA is essentially an instruction set. Each instruction is three base-four digits (a sequence of three base pairs). A single instruction is either STOP, START, and for every amino acid there is one or more ADD AMINO ACID TO SEQUENCE instruction. Schultz altered the interpretation of some of the ADD AMINO instructions so that a different, non-natural amino acid is added. This new creation alters the mechanism by changing from a base-four instruction set to a base-eight instruction set. As a side benefit, bacteria based on this new mechanism cannot reproduce in the wild.