Identification of multiple SNT-binding sites on NPM-ALK oncoprotein and their involvement in cell transformation..     ///    NPM-ALK mutant protein mutated at these three binding sites showed significantly reduced transforming activity.     ///    "This raises a possibility that SNT family proteins play significant roles in cellular transformation triggered by NPM-ALK, which though remains to be verified.. "    ///    These observations indicate that the three SNT-binding sites of NPM-ALK are important for its transforming activity.     ///    Immunoprecipitation assay revealed that SNT-1 and SNT-2 interacted with NPM-ALK and kinase-negative NPM-ALK mutant.     ///    "Y156, Y567 and a 19-amino-acid sequence (aa 631-649) of NPM-ALK were essential for this interaction. "