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Graphical

MembraneCell outer membrane

Definition

The prokaryotic outer cell membrane is the selectively permeable membrane which separates the prokaryotic periplasm from its cell surroundings. Traditionally only Gram-negative bacteria were thought of as having an outer membrane, but recent work has shown some Actinobacteria, including Mycobacterium tuberculosis, as well as at least 1 archaea (Ignicoccus hospitalis) have a cell outer membrane.

Synonyms

Outer membrane

Category

› Cellular component

Keywords

Cell outer membrane

GOi

cell outer membrane [ GO:0009279 ]
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