Briefly Bound to Activate: Transient Binding of a Second Catalytic Magnesium Activates the Structure and Dynamics of CDK2 Kinase for Catalysis.
Bao, Z.Q., Jacobsen, D.M., Young, M.A.(2011) Structure 19: 675-690
- PubMed: 21565702 
- DOI: 10.1016/j.str.2011.02.016
- Primary Citation of Related Structures:  
3QHR, 3QHW - PubMed Abstract: 
We have determined high-resolution crystal structures of a CDK2/Cyclin A transition state complex bound to ADP, substrate peptide, and MgF(3)(-). Compared to previous structures of active CDK2, the catalytic subunit of the kinase adopts a more closed conformation around the active site and now allows observation of a second Mg(2+) ion in the active site ...