(pseudomurein) has been found. In pseudopeptidoglycan the sugar residues are ?-(1,3) linked N-acetylglucosamine and ''N''-acetyltalosaminuronic acid. This makes the cell walls of such archaea insensitive to lysozyme. The biosynthesis of pseudopeptidoglycan has been described.

Recognition by immune system

Peptidoglycan recognition is an evolutionarily conserved process. The overall structure is similar between bacterial species, but various

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