Fig. 2: Profiling of gut microbiota-derived PGNs reveals abundant saccharide moieties in the host gut.
From: Gut microbiota-derived GlcNAc-MurNAc is a TLR4 agonist that protects the host gut

a Scheme of HPLC-HRMS/MS workflow for PGN identification. b-c EICs of major PGN subtypes in the host feces: ahM, M, GM, and M-AE (b) and their chemical structures (c). d Chemical synthetic route of disaccharide GM.