HUMAN NUTRITION

Detailed explanation-1: -The peptidoglycan (murein) sacculus is a unique and essential structural element in the cell wall of most bacteria. Made of glycan strands cross-linked by short peptides, the sacculus forms a closed, bag-shaped structure surrounding the cytoplasmic membrane.

Detailed explanation-2: -Peptidoglycan is the major structural polymer in most bacterial cell walls and consists of glycan chains of repeating N-acetylglucosamine and N-acetylmuramic acid residues cross-linked via peptide side chains. Peptidoglycan hydrolases are produced by many bacteria, bacteriophages and eukaryotes.

Detailed explanation-3: -The peptidoglycan (PG) cell wall is a unique macromolecule responsible for both shape determination and cellular integrity under osmotic stress in virtually all bacteria.