An Immucillin‐Based Transition‐State‐Analogous Inhibitor of tRNA–Guanine Transglycosylase (TGT)
2016
Shigellosis is one of the most severe diarrheal diseases worldwide without any efficient treatment so far. The enzyme tRNA-guanine transglycosylase (TGT) has been identified as a promising target for small-molecule drug design. Herein, we report a transition-state analogue, a small, immucillin-derived inhibitor, as a new lead structure with a novel mode of action. The complex inhibitor synthesis was accomplished in 18 steps with an overall yield of 3 %. A co-crystal structure of the inhibitor bound to Z. mobilis TGT confirmed the predicted conformation of the immucillin derivative in the enzyme active site.
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