Is a polymer consisting of sugars and amino acids that forms a mesh-like layer outside the plasma membrane of bacteria
The sugar component consists of alternating residues of β-(1,4) linked N-acetylglucosamine (NAG) and N-acetylmuramic acid (NAM)
Peptide chain is attached to
NAM. The peptide chain can be
cross-linked to another peptide
Strand forming the 3D mesh-like
layer