Peptidoglycan structure glycan backbone muramic acid(NAM) Glucosamine (NAG) β-1,4-bond peptide side chain of four alternating D-and L- amino acids peptide cross-bridge D-and L-amino acids diaminopimelic acid (attention: difference between Gt and g-)
Peptidoglycan structure • glycan backbone – muramic acid(NAM) – Glucosamine (NAG) -1,4-bond • peptide side chain of four alternating D- and Lamino acids • peptide cross-bridge – D- and L- amino acids – diaminopimelic acid • (attention:difference between G+ and G- )
D-glutamic acid lysine/Dian ainnopINoAC MHALAESAMNNONGA WLASGAVNMPEA) D-alaimme D-alanine Peptidoglycan ○○○ Muramic acid Glucosamine
Peptidoglycan Muramic acid Glucosamine L-alanine D-glutamic acid L-lysine/Diaminopimelic acid D-alanine D-alanine