The complex that inserts lipopolysaccharide into the bacterial outer membrane forms a two-protein plug-and-barrel
… This glycolipid is found exclusively in the outer leaflet of the asymmetric outer membrane (OM), where it forms a barrier to the entry of toxic …
Elizaveta Freinkman, Shu-Sin Chng, and Daniel Kahne
PNAS January 21, 2011 10.1073/pnas.1015617108