Enhancing Thermostability and Organic Solvent Tolerance of ω‐Transaminase through Global Incorporation of Fluorotyrosine

Abstract Here, we have utilized the incorporation of non‐canonical amino acids as a tool kit to improve enzyme properties for organic synthesis applications. The global incorporation of 3‐fluorotyrosine (FY) into ω‐transaminase (ω‐TA) to give ω‐TA[FY] enhanced the thermostability and organic solvent tolerance without altering substrate specificity and enantioselectivity. Moreover, ω‐TA[FY] was able to completely convert 25 mM of acetophenone into ( S )‐1‐phenylethylamine ( ee >99%) in the presence of 20% DMSO (v/v) which is ∼2‐fold higher when compared to wild‐type ω‐TA. magnified image