Structure‐Guided Engineering of a Promiscuous O‐Methyltransferase for a SAM Regeneration Biocatalysis Platform of Methylated Pharmaceuticals. - Xiong, Xiran; Song, Jun; Li, Shihan; Jin, Lu; He, Qi; Zhang, Baohui; Cao, Yan; Yi, Shanyong; Yang, Yanfang; Li, Xiang; Li, Juan; Huang, Wei (Advanced Science, 2026)