The CSNK2A2 protein is a constitutively active kinase that phosphorylates substrates and controls the cell cycle, apoptosis, and transcription. CSNK2A1 Protein, Human (His) is the recombinant human-derived CSNK2A1, expressed by E. coli, with His labeled tag. The total length of CSNK2A1 Protein, Human (His) is 391 a.a..