Fig. 1From: Crystal structure of O-methyltransferase CalO6 from the calicheamicin biosynthetic pathway: a case of challenging structure determination at low resolutionProposed O-methylation of orsellinic acid likely tethered to the ACP domain of CalO5 (indicated by an R) by CalO6 during calicheamicin (CAL) biosynthesisBack to article page