Structures of the Cdk12/Cyck Complex with AMP-Pnp Reveal a Flexible C-Terminal Kinase Extension Important for ATP Binding.
Dixon-Clarke, S.E., Elkins, J.M., Cheng, S.G., Morin, G.B., Bullock, A.N.(2015) Sci Rep 5: 17122
- PubMed: 26597175 
- DOI: 10.1038/srep17122
- Primary Citation of Related Structures:  
4CXA, 4UN0 - PubMed Abstract: 
Cyclin-dependent kinase 12 (CDK12) promotes transcriptional elongation by phosphorylation of the RNA polymerase II C-terminal domain (CTD). Structure-function studies show that this activity is dependent on a C-terminal kinase extension, as well as the binding of cyclin K (CycK) ...