5TWJ:
reference: Small methyltransferase RlmH assembles a composite active site to methylate a ribosomal pseudouridine., Koh CS, Madireddy R, Beane TJ, Zamore PD, Korostelev AA, Sci Rep. 2017 Apr 20;7(1):969. doi: 10.1038/s41598-017-01186-5. PMID: 28428565

This OCA Structure page
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