1NXZ:
reference: Functional assignment based on structural analysis: crystal structure of the yggJ protein (HI0303) of Haemophilus influenzae reveals an RNA methyltransferase with a deep trefoil knot., Forouhar F, Shen J, Xiao R, Acton TB, Montelione GT, Tong L, Proteins 2003 Nov 1;53(2):329-32. PMID: 14517985

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