Digalacturonic Acid

α-D-GalA-(1→4)-D-GalA

Digalacturonic acid is a linear oligosaccharide composed of two D-galacturonic acid units linked by α-(1,4) glycosidic bonds. It is a key structural fragment of pectin, a complex polysaccharide found in the cell walls of plants. Digalacturonic acid is produced when pectin is broken down by enzymes such as pectinases. This compound is used in research to study the structure of pectin and the function of pectin-degrading enzymes.