casein kinase 1 ( ck 1 ) and casein kinase 2 ( ck 2 ) were purified from the cytosol fraction of ah-66 cells to electrophoretic homogeneity by a simple procedure based on our finding that ck 1 and ck 2 are chromatographically distinct on phosvitin-sepharose .
C1383501
cytosol
C0007634
cells