{beta}-Arrestin is crucial for ubiquitination and down-regulation of the insulin-like growth factor-1 receptor by acting as adaptor for the MDM2 E3 ligase
Journal of Biological Chemistry (2005) - Comments
pubmed: 15878855  doi: 10.1074/jbc.m501129200  issn: 0021-9258 

Leonard Girnita, Sudha K. Shenoy, Bita Sehat, Radu Vasilcanu, Ada Girnita, Robert J. Lefkowitz, Olle Larsson