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. Author manuscript; available in PMC: 2020 Dec 18.
Published in final edited form as: J Am Chem Soc. 2019 Dec 6;141(50):19817–19822. doi: 10.1021/jacs.9b09864

Figure 1.

Figure 1.

a) Catalytic cycle of amino acid synthesis using TrpB. b) Previous biocatalytic reactions catalyzed by variants of TrpB67, 9 and proposed stereo- and chemo- selective reaction using engineered TrpB.