Photo 1 (IMAGE) The University of Hong Kong Caption Figure 1. (a) Tryptophan residues in peptide drugs; (b) Late-stage tryptophan-selective S-diversification of native peptides developed in this research project. Image adapted from ‘Clickable tryptophan modification for late-stage diversification of native peptides', Science Advances 2024. DOI: 10.1126/sciadv.adp995. Credit The University of Hong Kong Usage Restrictions N/A License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.