Bacterial Outer Membrane

The bacterial outer membrane is found in Gram-negative bacteria. Its composition is distinct from that of the cytoplasmic membrane - among other things, the outer leaflet of the outer membrane of many Gram-negative bacteria includes a complex lipopolysaccharide whose lipid portion acts as an endotoxin - and in some bacteria such as E. coli it is linked to the cell's peptidoglycan by Braun's lipoprotein.

Porins can be found in this layer.

Read more about Bacterial Outer Membrane:  Clinical Significance, Biogenesis

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