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. 2021 Nov 1;12:6285. doi: 10.1038/s41467-021-26580-6

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© The Author(s) 2021

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Fig. 3 — Chemical structures of transition state analogues that were tested for inhibition of TcdA-GTD and TcdB-GTD in this study. Positions of relevant carbon atoms in isofagomine and noeuromycin are indicated.