Sean A. Beausoleil, Mark Jedrychowski, Daniel Schwartz, Joshua E. Elias, Judit Villén, Jiaxu Li, Martin A. Cohn, Lewis C. Cantley, Steven P. Gygi
Proc Natl Acad Sci U S A. 2004 Aug 17; 101(33): 12130–12135. Published online 2004 Aug 9. doi: 10.1073/pnas.0404720101