Required for nuclear protein import, its predominant substrate seems to be ribosomal proteins. Binds to nucleoporins and the GTP-bound form of gsp1 (Ran) (By similarity).

Belongs to the importin beta family.

1067 amino acids

MDAQFTLELTQLLFQSIAPDTTQITEATRALETKYLKEPGSLLSLFHIMGTCENPQVRQLAAIEARKLCHKYWSSVDADVQNQIRSNLLDITLKEPESIVRHAFGRVIAALAKLDLPEGKWNELSAFLVQATMDQNDSIREMAVYVLYSIAETVDLDNKLLLDFVNLFSQTITDSSRTVRVTSVQGLGAIAEVLESDDKKLLHAYRATLPGMLLVLQDVVQVGDVDASKQVFDVFNTFLIASGAIISKALGNIIEIITGIANSKQVDDEIRCMALSFIISCIRFKSRKLQALKLGKPLVLTLMEVATEETTDDIDEDCPARLALRSIDLLSTHLSPSQVFYPMFEAACAFSQSPQASYRKAALLSIGVAVEGSSESVAGNLPNIFPIIINGLCDNDMDVRQAALLALSQIAVEIPTEVSKHHAQLLPLVFELMSTQGVKVGKSACNCIDALLEGLDKSEISGYLPMLMERLVGLLEFSDTPDIKSCVAAAIGSAAFAAQDDFIPYFERTMASLSQCLHTTDDDEGYELRGTVMDTLGAIANAVGKQAFLPYTEQLIQLAYEGIQIDHSRLRECSFCFYAVLARVYKEEFAPFLEHIVPALFKSIDQDESDILSERIGAPTAEEISQLLDSVETNEEENDEELEKAMGVNSAIAMEKEIAADALGEICMYVGAPFTPYLEPTVEKLVACTTHFYEGVRKSALSSLWRCATTYYKVCNVPQWQPGLPLKVPVPDTVKNIFEAVRKCTFDTLEEEYEKTVATDILRNFAESIKTCGPVVLGDDYEKLCEVVMEVLQKQHIVQAGDVFDDDFEEEDIVSNEEVDDTEQDALLIDSACDVVIALAVALGGSFADSFKVFYPQIVKYYMSKNGNERAMAVACVGEVAGGIESAITPFTRDVFSLFMAALEDSEGEVRSNAAYSMGLLCQFSTEDLSSEYLNILQKLQPFFTQEVFRTALDNAIGCISRLILHNQNAIPVDQVLPIVFSKLPLKEDYLENAPLYHMILALYRQQNPCLVQHLGELIPVFASVLTGSPEQLNDELRSELLSMVKEIAPQYESVVSNYPQLVALLQ

117.8 kDa

(Note: Representative image - actual molecular weight may vary depending on tag type and expression method)

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