CATH Classification

Domain Context

CATH Clusters

Superfamily Transferase(Phosphotransferase) domain 1
Functional Family cyclin-dependent kinase 12 isoform X1

Enzyme Information

2.7.11.23
[RNA-polymerase]-subunit kinase.
based on mapping to UniProt Q9NYV4
ATP + [DNA-directed RNA polymerase] = ADP + [DNA-directed RNA polymerase] phosphate.
-!- Appears to be distinct from other protein phosphokinases. -!- Brings about multiple phosphorylation of the unique C-terminal repeat domain of the largest subunit of eukaryotic EC 2.7.7.6. -!- Does not phosphorylate casein, phosvitin or histone. -!- Formerly EC 2.7.1.141.
2.7.11.22
Cyclin-dependent kinase.
based on mapping to UniProt Q9NYV4
ATP + a protein = ADP + a phosphoprotein.
-!- Activation of cyclin-dependent kinases requires association of the enzyme with a regulatory subunit referred to as a cyclin. -!- It is the sequential activation and inactivation of cyclin-dependent kinases, through the periodic synthesis and destruction of cyclins, that provides the primary means of cell-cycle regulation. -!- Formerly EC 2.7.1.37.

UniProtKB Entries (1)

O75909
CCNK_HUMAN
Homo sapiens
Cyclin-K

PDB Structure

PDB 4UN0
External Links
Method X-RAY DIFFRACTION
Organism
Primary Citation
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.
Sci.Rep.