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
Famous quotes containing the word outer:
“The outer world, from which we cower into our houses, seemed after all a gentle habitable place; and night after night a man’s bed, it seemed, was laid and waiting for him in the fields, where God keeps an open house.”
—Robert Louis Stevenson (1850–1894)