5WMM:
reference: Structural basis for backbone N-methylation by an interrupted adenylation domain., Mori S, Pang AH, Lundy TA, Garzan A, Tsodikov OV, Garneau-Tsodikova S, Nat Chem Biol. 2018 Mar 19. pii: 10.1038/s41589-018-0014-7. doi:, 10.1038/s41589-018-0014-7. PMID: 29556104

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