ID   4.2.2.28
DE   alpha-L-rhamnosyl-(1->4)-beta-D-glucuronate lyase.
AN   L-rhamnose-alpha-1,4-D-glucuronate lyase.
CA   alpha-L-rhamnosyl-(1->4)-D-glucuronate = 4-deoxy-L-threo-hex-4-
CA   enopyranuronate + L-rhamnopyranose.
CC   -!- The enzyme, characterized from the phytopathogenic fungus Fusarium
CC       oxysporum, removes the rhamnosyl residue from alpha-L-rhamnosyl-
CC       (1->4)-beta-D-glucuronate or (with lower activity) from
CC       oligosaccharides that contain this motif at the non-reducing end,
CC       leaving an unsaturated glucuronate residue.
CC   -!- Among its natural substrates is the type II arabinogalactan component
CC       of gum arabic.
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