Characterization of Specific -α-Acetyltransferase 50 (Naa50) Inhibitors Identified Using a DNA Encoded Library.

Two novel compounds were identified as Naa50 binders/inhibitors using DNA-encoded technology screening. Biophysical and biochemical data as well as cocrystal structures were obtained for both compounds ( and ) to understand their mechanism of action. These data were also used to rationalize the binding affinity differences observed between the two compounds and a MLGP peptide-containing substrate. Cellular target engagement experiments further confirm the Naa50 binding of and demonstrate its selectivity toward related enzymes (Naa10 and Naa60). Additional analogs of inhibitor were also evaluated to study the binding mode observed in the cocrystal structures.