1XIP:
reference: The N-terminal domain of Nup159 forms a beta-propeller that functions in mRNA export by tethering the helicase Dbp5 to the nuclear pore., Weirich CS, Erzberger JP, Berger JM, Weis K, Mol Cell 2004 Dec 3;16(5):749-60. PMID: 15574330

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