Ras Is Required for the Cyclic AMP-Dependent Activation of Rap1 via Epac2

Chang Liu, Maho Takahashi, Yanping Li, Shuang Song, Tara J. Dillon, Ujwal Shinde and Philip J. S. Stork

Molecular and Cellular Biology 28 ( 23 ): 7109 - 7125 , 2008