单词	peptidoglycan
释义	peptidoglycan /pɛpˌtʌɪdə(ʊ)ˈɡlʌɪkan / noun [mass noun] Biochemistry A substance forming the cell walls of many bacteria, consisting of glycosaminoglycan chains interlinked with short peptides.For instance, the cell walls of all bacteria contain the chemical peptidoglycan.... This coincidence suggests that the D-amino acids originated in peptidoglycan of bacterial cell walls. The cell wall, which is relatively porous, consists of many polymer layers of peptidoglycan connected by amino acid bridges.
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