4DJF:
reference: Visualizing molecular juggling within a B(12)-dependent methyltransferase complex., Kung Y, Ando N, Doukov TI, Blasiak LC, Bender G, Seravalli J, Ragsdale SW, Drennan CL, Nature. 2012 Mar 14. doi: 10.1038/nature10916. PMID: 22419154

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