The enzyme Rhamnogalacturonan acetylesterase (EC 3.1.1.86, RGAE; systematic name rhamnogalacturonan 2/3-O-acetyl-ñ-<small>D</small>-galacturonate O-acetylhydrolase) is an enzymecatalyses the reaction
Hydrolytic cleavage of 2-O-acetyl- or 3-O-acetyl groups of ñ-<small>D</small>-galacturonic acid in rhamnogalacturonan I.