VOLUME 287 (2012) PAGES 10344–10354
This article has been withdrawn by the authors. Following concerns raised about potential data manipulation, the University of Basel conducted an internal investigation. This evaluation established that data had been manipulated. Given that the integrity of the manuscript is compromised, the senior author has requested that the article be withdrawn. All authors agreed to the withdrawal. The Journal confirmed that data had been manipulated by determining that the same data had been used to represent different experimental conditions. Specifically, the tubulin immunoblot in Fig. 1C was reused in Fig. 5, B and K. In Fig. 2B, a portion of the tubulin and ubiquitin immunoblots from 134/04 myoblasts was reused for 180/06 myoblasts. In Fig. 2D, features in the ubiquitin immunoblot from 134/04 myoblasts were duplicated.