Polygalacturonase
From Proteopedia
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Polygalacturonases (PGs) catalyze the enzymatic depolymerization of pectins – polysaccharides that comprise the plant cell wall. Polymer disassembly of substrates by ''exo-'' and ''endo-'' PGs is carried out via a hydrolytic mechanism. Degradation of pectins in plant cell walls contributes to ripening of fruits, such as tomatoes and melons '''(Polygalacturonases: many genes in search of a function)'''. | Polygalacturonases (PGs) catalyze the enzymatic depolymerization of pectins – polysaccharides that comprise the plant cell wall. Polymer disassembly of substrates by ''exo-'' and ''endo-'' PGs is carried out via a hydrolytic mechanism. Degradation of pectins in plant cell walls contributes to ripening of fruits, such as tomatoes and melons '''(Polygalacturonases: many genes in search of a function)'''. | ||
<StructureSection load='1stp' size='340' side='right' caption='Caption for this structure' scene=''> | <StructureSection load='1stp' size='340' side='right' caption='Caption for this structure' scene=''> | ||
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== Function == | == Function == | ||
PGs cleave α-(1-4) – glycosidic bonds between consecutive galacturonic acid residues. | PGs cleave α-(1-4) – glycosidic bonds between consecutive galacturonic acid residues. | ||
Revision as of 21:30, 1 July 2017
Polygalacturonases (PGs) catalyze the enzymatic depolymerization of pectins – polysaccharides that comprise the plant cell wall. Polymer disassembly of substrates by exo- and endo- PGs is carried out via a hydrolytic mechanism. Degradation of pectins in plant cell walls contributes to ripening of fruits, such as tomatoes and melons (Polygalacturonases: many genes in search of a function).
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References
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Joel L. Sussman, Krishna Amin, Michal Harel, Marilyn Yoder, OCA, Jaime Prilusky
