EC 22.214.171.124 Enzyme
Acting on polysaccharides
poly(1,4-alpha-D-galacturonosyl methyl ester) non-reducing-end-monosaccharide-lyase
(1,4-alpha-D-galacturonosyl methyl ester)n = (1,4-alpha-D-galacturonosyl methyl ester)n-1 + 4-deoxy-6-O-methyl-L-threo-hex-4-enopyranuronate
(1,4-alpha-D-galacturonosyl methyl ester)n
(1,4-alpha-D-galacturonosyl methyl ester)n-1;
The enzyme, isolated from the fungus Aspergillus giganteus, acts on the non-reducing end of methyl-esterified polygalacturonan, releasing either 4-deoxy--L-threo-hex-4-enopyranuronate or 4-deoxy-6-O-methyl-L-threo-hex-4-enopyranuronate. The enzyme is stimulated by divalent cations, with Co2+ having the strongest effect. It is able to act on substrates as short as a disaccharide, and was active on substrates with degrees of methyl esterification ranging between 34% and 90%.
EC 126.96.36.199 created 2020
Pedrolli DB, Carmona EC
Purification and Characterization of a Unique Pectin Lyase from Aspergillus giganteus Able to Release Unsaturated Monogalacturonate during Pectin Degradation.
Enzyme Res 2014:353915 (2014)
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