InterPro domain: IPR017336

Snurportin-1 is a nuclear import receptor that contains an N-terminal importin beta binding domain which is essential for its function as an snRNP-specific nuclear import receptor [ 1 ]. Snurportin-1 interacts with m3G-cap where it enhances the m3G-cap dependent nuclear import of U snRNPs in Xenopus laevis oocytes and digitonin-permeabilized HeLa cells [ 2 ].

1. Snurportin1, an m3G-cap-specific nuclear import receptor with a novel domain structure. EMBO J. 17, 4114-26