2IS9:
reference: Structural basis for the function of DCN-1 in protein Neddylation., Yang X, Zhou J, Sun L, Wei Z, Gao J, Gong W, Xu RM, Rao Z, Liu Y, J Biol Chem. 2007 Aug 24;282(34):24490-4. Epub 2007 Jun 26. PMID: 17597076

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