Complex of recombinant full length human CDK5 (GenBank Accession No. NM_004935), a.a. 1-292 (end) with N-terminal GST-tag and p25 (GenBank Accession No. NM_003885), a.a. 99-307 (end) with N-terminal GST-tag. Co-expressed in a Baculovirus-infected Sf9 cell expression system. CDK5 MW=60 kDa, p25 MW=50 kDa.
Host cell line: Sf9 cells
Specific activity: 312 pmol/min/ug
Background
CDK5 is a member of the Cyclin-Dependent Kinase family that is most abundant in the mammalian brain. Active form of CDK5, which has also been called neuronal cdc2-like kinase, is a heterodimer of CDK5 and a 25 kDa protein which is derived proteolytically from a 35 kDa brain and neuron-specific protein and is essential for the kinase activity of CDK5 (1). CDK5 has emerged as a crucial regulator of neuronal migration in the developing central nervous system. CDK5 phosphorylates a diverse list of substrates, implicating it in the regulation of a range of cellular processes - from adhesion and motility, to synaptic plasticity and drug addiction (2).
Immunogen Region
CDK5 1-292 (end), p25 99-307 (end)
Tag
N-terminal GST-tag
Formulation
40 mM Tris-HCl, pH 8.0, 110 mM NaCl, 2.2 mM KCl, 4 mM glutathione, 0.04% Tween-20, and 20% glycerol
Species
Human
Application
Useful for the study of enzyme kinetics, screening inhibitors, and selectivity profiling
Notes
Assay was done in a Kinase buffer using Histone H1 (BPS cat. #52043) as a substrate with 20 uM ATP at 30°C for 30 min. The amount of ATP transferred was calculated using Kinase-Glo reagent (Promega).
1. Tang, D. et al: Cyclin-dependent kinase 5 (Cdk5) and neuron-specific Cdk5 activators. Prog Cell Cycle Res. 1996;2:205-16. 2. Dhavan, R. et al: A decade of CDK5. Nat Rev Mol Cell Biol. 2001 Oct;2(10):749-59.