Activation of p107 by fibroblast growth factor, which is essential for chondrocyte cell cycle exit, is mediated by the protein phosphatase 2A/B55α holoenzyme.
Kurimchak A, Haines DS, Garriga J, Wu S, De Luca F, Sweredoski MJ, Deshaies RJ, Hess S, Graña X. Mol Cell Biol. 2013 Aug; 33(16):3330-42. Epub 2013 Jun 17.