A Kiss of Death to Drug the 'Undruggable' (IMAGE) University of Dundee Caption Image shows the E3 ligase protein VHL (in grey) in complex with the small molecule MZ1 (in raspberry) and 'kissing' the protein BRD4 (in yellow). Upon receiving this deadly `kiss', BRD4 is targeted for degradation. Credit Xavier Lucas, Alessio Ciulli, University of Dundee 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.