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A) Enzyme activity of wt SalL and the W190 mutant series of SalL using L-Met analogs. B) HPLC chromatograms illustrating the formation of butyl-SAM using wt and W190A SalL. The synthesis of butyl-SAM was verified by LC MS. Mmono = monoisotopic mass. *1.5 mM S-benzyl-L-Hcy. ∇These peaks are impurities from the enzyme solutions.
