3FYC:
reference: Structural and Functional Divergence within the Dim1/KsgA Family of rRNA Methyltransferases., Pulicherla N, Pogorzala LA, Xu Z, O Farrell HC, Musayev FN, Scarsdale JN, Sia EA, Culver GM, Rife JP, J Mol Biol. 2009 Jun 9. PMID: 19520088

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