The nuclear import of unphosphorylated STAT2 depended on its association with IRF - 9, which contained a constitutive nuclear localization signal (35). (cancerres.aacrjournals.org)
Interferon regulatory factor subcellular localization is determined by a bipartite nuclear localization signal in the DNA - binding domain and interaction with cytoplasmic retention factors (pnas.org)
Bioinformatic analyses suggest that glycine - arginine and proline - arginine repeats could mimic the nuclear localization signals of these proteins and hence hijack nuclear import by overloading the nucleocytoplasmic transport system. (sciencedaily.com)