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General Microbiology & Immunology (PM 401)         Second level                Semester 4                    2024/2025


                  Gram Negative Cell Walls

                  - More complex than that of Gram positive bacteria


                  - The Gram-negative cell wall appears multilayered. It consists of:

                   1-  A thin, inner wall composed of peptidoglycan

                    -  The peptidoglycan portion of the Gram-negative cell wall is generally 2-3 nm

                       thick and contains just 2-3 layers of peptidoglycan.

                    -  Chemically, only 10 to 20% of the Gram-negative cell wall is peptidoglycan.






















































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