General description

Note: 1 KU = 1000 units.

Recombinant, human casein kinase II expressed in E. coli. A cyclic nucleotide-independent serine/threonine protein kinase composed of catalytic α-subunits (M.W. 44 kDa) and regulatory β-subunits (M.W. 26 kDa) in an α₂β₂- tetramer. This material is one of several forms of native CK-II. Suitable for in vitro phosphorylation of proteins and peptides, phosphopeptide synthesis, characterization of phosphorylating sites, screening of activators and inhibitors, and mechanistic studies. The following substrates have been characterized by CK-II both in vitro and in vivo: nucleolin, RNA polymerase, p53, and SV 40 large T antigen.

Recombinant, human casein kinase II expressed in E. coli. A cyclic nucleotide-independent serine/threonine protein kinase composed of catalytic α-subunits (M.W. 44 kDa) and regulatory β-subunits (M.W. 26 kDa) in an α₂β₂-tetramer. This material corresponds to one of several forms of native CKII. Suitable for in vitro phosphorylation of proteins and peptides, phosphopeptide synthesis, characterization of phosphorylating sites, screening of activators and inhibitors, and mechanistic studies.

Legal Information

Triton is a trademark of The Dow Chemical Company or an affiliated company of Dow

CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany

Other Notes

Yamaguchi, Y., et al. 1998. Nucleic Acids Res.26, 3854.Chester, N., and Marshak, D.R. 1993. Anal. Biochem.209, 284.Russo, G.L., et al. 1992. J. Biol. Chem.267, 20317.

Packaging

10 ku in Plastic ampoule

Physical form

In 350 mM NaCl, 20 mM Tris-HCl, 2 mM DTT, 1 mM EDTA, 0.1% TRITON^™ X-100 Detergent, pH 7.5.

Reconstitution

Following initial thaw, aliquot and freeze (-70°C).

Unit Definition

One unit is defined as the amount of enzyme that will catalyze the transfer of 1.0 pmol of phosphate to RRRADDSDDDDD per min at 30°C, pH 7.5, in a total volume of 25 µl.

Warning

Toxicity: Standard Handling (A)