Antibacterial agent masterbatch ,nucleating agent masterbatch and antibacterial PP films were prepared by using PP as base resin,modified silver-loaded zirconium phosphate as antibacterial agent and YS-688 (second benzylidene sorbitol derivative) as nucleating agent,and the performances of the antibacterial PP films modefied by nucleating agent were studied.

This article has introduced the main types and functions of the protein phosphorylation,the identification of the phosphopeptides,the determination of the specific-phosphorylation-site and the phosphorelated modifications of the proteins and reviewed their resea.