rhamnogalacturonan endolyase activity
Catalysis of the reaction: H2O + a rhamnogalacturonan type I = [rhamnogalacturonan I oligosaccharide]-alpha-L-rhamnose + 4-deoxy-4,5-unsaturated D-galactopyranosyluronate-[rhamnogalacturonan I oligosaccharide].
GO:0016837
carbon-oxygen lyase activity, acting on polysaccharides
is_a