UC San Diego Enzyme Reads Expanded Eight-Letter Genetic Alphabet

Researchers at UC San Diego have demonstrated that RNA polymerase, a crucial cellular enzyme, can accurately read an eight-letter genetic alphabet, effectively doubling the four letters found in natural DNA. This discovery, published in Nature Communications and PNAS, represents a significant advance toward developing expanded genetic systems. Such systems could enable entirely new biological functions and facilitate the engineering of novel compounds, potentially revolutionizing biotechnology and medicine.