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. 2020 Mar 2;26(24):5328–5340. doi: 10.1002/chem.201903756

Scheme 10.

Scheme 10

Concomitant bromination of tryptophan by an engineered E. coli whole cell catalyst producing the tryptophan 7‐halogenase PrnA and SMC derivatisation of the formed 7‐bromotryptophan in special growth medium CCM.40