Polygalacturonase: Difference between revisions

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Joel L. Sussman (talk | contribs)
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<Structure load='1czf' size='350' side='right' caption='Glycosylated structure of ''endo''-polygalacturonase II complex with Zn+2 ion (grey) (PDB code [[1czf]])'  scene=''>
<Structure load='1czf' size='350' side='right' caption='Glycosylated structure of endo-polygalacturonase II complex with Zn+2 ion (grey) (PDB code [[1czf]])'  scene=''>
 
'''Polygalacturonases''' (PGs) catalyze the enzymatic depolymerization of pectates – 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 pectates in plant cell walls contributes to ripening of fruits, such as tomatoes and melons <ref>DOI: 10.1104/pp.117.2.337</ref>. Microbial PGs have been identified to be a part of defense mechanisms because of their role in pathogen attack <ref>DOI: 10.1074/jbc.273.38.24660</ref>.
'''Polygalacturonases''' (PGs) catalyze the enzymatic depolymerization of pectates – 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 pectates in plant cell walls contributes to ripening of fruits, such as tomatoes and melons <ref>DOI: 10.1104/pp.117.2.337</ref>. Microbial PGs have been identified to be a part of defense mechanisms because of their role in pathogen attack <ref>DOI: 10.1074/jbc.273.38.24660</ref>.


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