VOLUME 283 (2008) PAGES 28897–28908
This article has been withdrawn at the request of the authors.
Reason: To demonstrate that the activation of AMPK is mediated by EGFR activation, the authors included data in Fig. 2 (A, G, and H) that had been used in a previous publication. After publication of the above article, the authors were made aware of this and are therefore withdrawing this paper. Despite these errors, the authors stand by the reproducibility of the experimental data and the conclusion.