polygalacturonase
Sign in to saveAlso known as endogalacturonase, endo-polygalacturonase, endopolygalacturonase, endo-D-galacturonase, pectolase, pectin polygalacturonase, poly-alpha-1,4-galacturonide glycanohydrolase, poly(1,4-alpha-D-galacturonide) glycanohydrolase
Endo-polygalacturonase (, pectin depolymerase, pectolase, pectin hydrolase, and poly-α-1,4-galacturonide glycanohydrolase; systematic name (1→4)-α-D-galacturonan glycanohydrolase (endo-cleaving)) is an enzyme that hydrolyzes the α-1,4 glycosidic bonds between galacturonic acid residues:
Research
3,246 papers- Polygalacturonase-inhibiting proteins in defense against phytopathogenic fungi.Current opinion in plant biology · 2002
- Polygalacturonase, PGIP and oligogalacturonides in cell-cell communication.Biochemical Society transactions · 1994
- Polygalacturonase-inhibiting protein (PGIP) in plant defence: a structural view.Phytochemistry · 2006
- Polygalacturonase treatment affects carotenoid absorption from veggie juice.Food chemistry · 2023
- Elucidating the role of polygalacturonase genes in strawberry fruit softening.Journal of experimental botany · 2020
via PubMed
Wikidata facts
Show 2 more facts
- EC enzyme number
- 3.2.1.15
- Commons category
- Polygalacturonase
via Wikidata · CC0
~7 min read
Article
6 sectionsContents
- Structure
- Mechanism
- Agricultural relevance
- Inhibition
- References
- External links
Endo-polygalacturonase (, pectin depolymerase, pectolase, pectin hydrolase, and poly-α-1,4-galacturonide glycanohydrolase; systematic name (1→4)-α-D-galacturonan glycanohydrolase (endo-cleaving)) is an enzyme that hydrolyzes the α-1,4 glycosidic bonds between galacturonic acid residues: (1,4-α-D-galacturonosyl)n+m + H2O = (1,4-α-D-galacturonosyl)n + (1,4-α-D-galacturonosyl)m
Polygalacturonan, whose major component is galacturonic acid, is a significant carbohydrate component of the pectin network that comprises plant cell walls. Therefore, the activity of the endogenous plant PGs works to soften and sweeten fruit during the ripening process. Similarly, phytopathogens use PGs as a means to weaken the pectin network, so that digestive enzymes can be excreted into the plant host to acquire nutrients.