Fig. 1 (IMAGE) Osaka University Caption A one-step preparation of TA4C and a one-step bioconjugation targeting an N-terminus α-amino group. The blue star represents a target molecule for N-terminal modification. Credit Osaka University Usage Restrictions None License Licensed 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.