Chiu et al., RNA 2003
:
Upf1 phosphorylation is mediated by Smg1 , a phosphoinositol 3-kinase related protein kinase
Okada-Katsuhata et al., Nucleic Acids Res 2012
:
Thus, the SMG-1 mediated phosphorylation of Upf1 creates a binding platforms for the SMG-5 : SMG-7 complex and for SMG-6, and triggers sequential remodeling of the mRNA surveillance complex for NMD induction and recycling of the ribosome, release factors and NMD factors