The molecule is an aminoglycan consisting of beta-(1->4)-linked D-glucosamine residues. It has a role as a plant activator and a Saccharomyces cerevisiae metabolite. It is an aminoglycan and an exopolysaccharide. It is a conjugate base of a cationic chitosan.
(2R,3R,4R,5S,6R)-3-amino-6-(hydroxymethyl)oxane-2,4,5-triol