The second diagram on this page is horrificly inaccurate. How it can center around CDK2 when it has been shown that this is redundant to CDK1?
Berthet, C., E. Aleem, V. Coppola, L. Tessarollo, and P. Kaldis. 2003. Cdk2 knockout mice are viable. Curr. Biol. 13:1775–1785.
The Journal of Cell Biology, Vol. 178, No. 2, July 16, 2007 257–268
Please consider revision of this image!