Tumor Suppressor HERC Protein (IMAGE) University of Barcelona Caption Studies by experts from the Faculty of Medicine and Health Sciences of the UB and IDIBELL under direction of Professor José Luis Rosa confirm the decisive role of HERC proteins -ubiquitin ligase- in the suppressor molecular mechanisms of carcinogenesis and tumor progression.. Credit UNIVERSITY OF BARCELONA Usage Restrictions The image may only be used with appropriate caption or credit. 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.