4GA1:
reference: Crystal Structure of the N-Terminal Domain of Nup358/RanBP2., Kassube SA, Stuwe T, Lin DH, Antonuk CD, Napetschnig J, Blobel G, Hoelz A, J Mol Biol. 2012 Sep 7. pii: S0022-2836(12)00719-X. doi:, 10.1016/j.jmb.2012.08.026. PMID: 22959972

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