Related:

a sugar in which a hydroxyl group (-OH) is replaced by an amino group (-NH₂)

peptidoglycane examples

• N-acetylglucosamine (NAG) → a glucose molecule modified with an acetylated amino group.
• N-acetylmuramic acid (NAM) → similar to NAG, but with a lactyl group linked to the tetrapeptide

these amino sugars form β(1→4) covalent bonds and connect the peptide chains, providing rigidity and structural stability to the bacterial cell wall.