Method and kit for isolating and fractioning phosphoproteins

摘要

Disclosed herein a method and a kit for fractioning/isolating phosphoproteins. Calcium ions, barium ions, cobalt ions and molybdenum ions are bound specifically to phosphoproteins to form metal-phosphoprotein complexes. They can be easily precipitated with precipitants including sulfates, citrates, bicarbonates and carbonates.