Composition and Action of Yeast Polygalacturonase
Abstract
YEAST polygalacturonase is an exo-cellular pectic enzyme produced by Saccharomyces fragilis in a synthetic, protein-free medium. The enzyme is constitutive and is not accompanied by pectinesterase1. When it is allowed to act on pectic acid, the following series of reactions occurs2: (a) Pectic acid --> penta- + tetra- + tri- + digalacturonic acids; (b) Pentagalacturonic acid --> tetra- + galacturonic acids; Pentagalacturonic acid --> tri- + digalacturonic acids; (c) Tetragalacturonic acid --> tri- + galacturonic acids; (d) Trigalacturonic acid --> di- + galacturonic acids.
- Publication:
-
Nature
- Pub Date:
- September 1954
- DOI:
- 10.1038/174515a0
- Bibcode:
- 1954Natur.174..515D