Term Name:	osmoregulated periplasmic glucan
Synonyms:	OPG, OPGs, periplasmic glucan, periplasmic glucans
Definition:	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.
Ontology:	ChEBI [CHEBI:63300]  ( EBI )