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. 2020 Apr 15;84(2):e00090-19. doi: 10.1128/MMBR.00090-19

FIG 2.

FIG 2

GNAT acetylation mechanism. A catalytic glutamate or aspartate acts as a general base to abstract a proton from an amine. The nucleophilic amine attacks the carbonyl carbon of the acetyl moiety, allowing for a direct transfer of the acetyl group. A general acid (usually a tyrosine) reprotonates the thiolate of CoA.