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The crystal structure of β-luffin at 2.0 Å resolution was solved by the molecular-replacement method using polyalanyl trichosanthin as the search model. The structure was refined with CNS1.1, giving Rwork = 0.162 and Rfree = 0.204. The r.m.s.d.s of the bond lengths and bond angles are 0.008 Å and 1.3°, respectively. The overall structure is similar to those of other type I RIPs. Three N-acetylglucosamine (Nag) molecules are linked to residues Asn2, Asn78 and Asn85 of the protein.

Supporting information

PDB reference: β-luffin, 1nio, r1niosf

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