Pectinolytic enzymes consist of four classes of enzymes: pectin lyase, polygalacturonase, pectin methylesterase and rhamnogalacturonase. Among pectinolytic enzymes, pectin lyase is the most important in depolymerization of pectin, since it cleaves internal glycosidic bonds of highly methylated pectins. Eliminative cleavage of (1->4)-alpha-D-galacturonan methyl ester to give oligosaccharides with 4-deoxy-6-O-methyl-alpha-D-galact-4-enuronosyl groups at their non-reducing ends. N-glycosylated at Asn-129 and O-glycosylated at Thr-88 when expressed in Aspergillus nidulans. The protein from strain 4M-147 is O-glycosylated at Thr-88 and Ser-368. PubMed:9195887 modeled GalNAc at the O-glycosylation site, a glycosylation not observed in fungi. The O-linked saccharide is probably mannose. Belongs to the polysaccharide lyase 1 family.