Pectinolytic enzymes consist of four classes of enzymes: pectine lyase, polygalacturonase, pectin methylesterase and rhamnogalacturonase. Hydrolyzes alpha-D-galacturonopyranosyl-(1,2)-alpha-L-rhamnopyranosyl linkages in the backbone of the hairy regions of pectins (By similarity). Belongs to the glycosyl hydrolase 28 family. Lacks the conserved His residue in position 290 essential for rhamnogalacturonase activity. Its enzyme activity is therefore unsure.