osmoregulated periplasmic glucan
osmoregulated periplasmic glucan
A branched glucan of 5 to 40 glucosyl residues found in the Gram-negative bacterial envelope. Can be substituted by non-sugar moieties, such as phosphoglycerol, phosphoethanolamine, phosphocholine, acetyl, succinyl and methylmalonyl. Osmoregulated periplasmic glucans show distinct structural diversity in their glucose backbones depending on the species they are produced by.