supported by grants from theNational Natural Science Foundation of China (No.81172345 and No. 30973506);the National High Technology Research and Development Program of China (863 Program) (2006AA02A404 to Y-X.Z.)
Nucleophosmin/B23 (NPM) is a universally expressed nucleolar phosphoprotein that participates in proliferation, apoptosis, ribosome assembly, and centrosome duplication; however, the role of NPM in cell cycle regulati...