Within the peptidoglycan layer, the cross-bridges that connect the chains of alternating sugar molecules extend between two N-acetylmuramic acid molecules. It is a polymer of sugars and amino acids.
A peptidoglycan layer is a polymeric unit composed of many sugar molecules (monosaccharides) and amino acids.
The peptidoglycan layer forms the cell wall of bacteria, by forming the outside part of the plasma membrane.
This layer consists of many glycan chains of N-acetylglucosamine and N-acetylmuramic acid linked together through peptide chains.
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