Purity: > 90 % by SDS - PAGE Format: Liquid. In 20mM Tris-HCl buffer(pH 8.0) containing 10% glycerol, 2mM DTT, 0.1M NaCl. . CRKL is a protein kinase containing SH2 and SH3 (src homology) domains which has been shown to activate the RAS and JuN kinase signaling pathways and transform fibroblasts in a RAS-dependent fashion. It is a substitutete of the BCR-ABL tyrosine kinase, plays a role in fibroblast transformation by BCR-ABL, and has oncogenic potential. Recombinant human CRKL protein, fused to His-tag at N-terminus, was expressed in E.coli and purified by using conventional chromatography techniques.