Popis: |
A bovine liver protein which is rapidly phosphorylated on incubation with AT32P has been highly purified. The molecular weight of the protein has been estimated to be approximately 100,000. Each protein molecule has been found to incorporate more than one phosphoryl group. From an alkaline hydrolysate of AT32P-incubated protein, 1-32P-phosphohistidine, 3-32P-phosphohistidine, and N-e-32P-phospholysine have been isolated. The possible role of the protein as an enzyme which is intermediately phosphorylated by its substrate is briefly discussed. |