Pectin lyase
Definition:
EC Tree > 4 Lyases > 4.2 Carbon-oxygen lyases > 4.2.2 Acting on polysaccharides > 4.2.2.10 pectin lyase
Pectin lyase is a pectin methyl-ester-preferring polysaccharide lyase. It favors the methyl-ester (pectin) over the de-esterified anion (pectate, preferred by EC 4.2.2.2); demethylation slows its action, but it can still cleave on either side of a demethylated residue if the other residue of the scissile bond is methylated. It performs eliminative cleavage of (1->4)-alpha-D-galacturonan methyl ester, releasing oligosaccharides with 4-deoxy-6-O-methyl-alpha-D-galact-4-enuronosyl non-reducing ends. It is found in Eukaryota and Bacteria. Structurally it is a PL1 pectin lyase.
Pectin lyase is a pectin methyl-ester-preferring polysaccharide lyase. It favors the methyl-ester (pectin) over the de-esterified anion (pectate, preferred by EC 4.2.2.2); demethylation slows its action, but it can still cleave on either side of a demethylated residue if the other residue of the scissile bond is methylated. It performs eliminative cleavage of (1->4)-alpha-D-galacturonan methyl ester, releasing oligosaccharides with 4-deoxy-6-O-methyl-alpha-D-galact-4-enuronosyl non-reducing ends. It is found in Eukaryota and Bacteria. Structurally it is a PL1 pectin lyase.
References:
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