polygalacturonase

noun

poly·​ga·​lac·​tu·​ro·​nase -ˌga-ˌlak-ˈt(y)u̇r-ə-ˌnās, -gə-ˈlak-tyər-ə-, -ˌnāz 

: an enzyme that hydrolyzes the glycosidic linkages of polymerized galacturonic acids (as pectic acid) and that occurs especially in microorganisms compare pectinase