3Q7E:
reference: Investigation of the molecular origins of protein-arginine methyltransferase I (PRMT1) product specificity reveals a role for two conserved methionine residues., Gui S, Wooderchak WL, Daly MP, Porter PJ, Johnson SJ, Hevel JM, J Biol Chem. 2011 Aug 19;286(33):29118-26. Epub 2011 Jun 21. PMID: 21697082

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