recombinant mouse importin α3/Qip1.

The gene KPNA4 (karyopherin subunit α 4) encodes a 16kDa protein, also referred to as importin α 3 belonging to the family of karyopherins (designated KPNA1 to KPNA4), that participates in the recognition of NLS (nuclear localization signal) sites and dock NLS-containing proteins destined for transport into the nuclear pore complex. It binds to translocon and participates in the sorting of INM (inner nuclear membrane)-directed integral membrane proteins. It associates with nucleoporins and functions in cargo-translocation across the nuclear membrane.

Solution in 0.01 M phosphate buffered saline, pH 7.4, and 15 mM sodium azide.

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