Novel biosynthetic approaches to the production of unnatural amino acids using transaminases

摘要

Transaminase enzymes are being increasingly applied to the large-scale synthesis of unnatural and nonproteinogenic amino acids. Typically displaying relaxed substrated specificity, rapid reaction rates and lacking the need for cofactor regeneration, they possess many characteristics that make them desirable as effective biocatalysts. By judiciusly combining the trans- aminase reaction with additional enzymatic steps, this approach can be used very efficiently to prepare a broad range of D-and L-amino acids.