Haoran Yu received his PhD in 2019 from the Department of Biochemical Engineering, UCL, with the supervision of Prof. Paul Dalby, for work on protein engineering of transketolase. Since July 2018, he worked as a research associate with Dr. Derek Macmillan in Department of Chemistry, UCL, to incorporate unnatural amino acids into proteins using the expanding genetic codes method. He has developed several rational design methods for improving the stability, activity and substrate scope of a range of biocatalytic enzymes. Haoran is now a principle investigator in Zhejiang University, Hangzhou, China, with the initial grant of £200K, for research in the areas of enzymes engineering.