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Publication Abstract from PubMed

Peptidoglycan O-acetylesterase (Ape1), which is required for host survival in Neisseria sp., belongs to the diverse SGNH hydrolase superfamily, which includes important viral and bacterial virulence factors. Here, multi-domain crystal structures of Ape1 with an SGNH catalytic domain and a newly identified putative peptidoglycan-detection module are reported. Enzyme catalysis was performed in Ape1 crystals and key catalytic intermediates along the SGNH esterase hydrolysis reaction pathway were visualized, revealing a substrate-induced productive conformation of the catalytic triad, a mechanistic detail that has not previously been observed. This substrate-induced productive conformation of the catalytic triad shifts the established dogma on these enzymes, generating valuable insight into the structure-based design of drugs targeting the SGNH esterase superfamily.

Visualization of a substrate-induced productive conformation of the catalytic triad of the Neisseria meningitidis peptidoglycan O-acetylesterase reveals mechanistic conservation in SGNH esterase family members.,Williams AH, Veyrier FJ, Bonis M, Michaud Y, Raynal B, Taha MK, White SW, Haouz A, Boneca IG Acta Crystallogr D Biol Crystallogr. 2014 Oct 1;70(Pt 10):2631-9. doi:, 10.1107/S1399004714016770. Epub 2014 Sep 27. PMID:25286847^[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.