The pectic enzymes of Aspergillus niger. A mercury-activated exopolygalacturonase
- 1 June 1966
- journal article
- Published by Portland Press Ltd. in Biochemical Journal
- Vol. 99 (3), 557-561
- https://doi.org/10.1042/bj0990557
Abstract
1. An exopolygalacturonase was separated from a mycelial extract of Aspergillus niger with a 290-fold purification and a recovery of 8.6%. 2. The enzyme displayed its full activity only in the presence of Hg(2+) ions; K(A) for mercuric chloride was about 6x10(-8)m. 3. The mercury-activated enzyme progressively removed the terminal galacturonic acid residues from alpha-(1-->4)-linked galacturonide chains and converted digalacturonic acid, trigalacturonic acid, tetragalacturonic acid and pectic acid into galacturonic acid.Keywords
This publication has 4 references indexed in Scilit:
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- The pectic enzymes of Aspergillus niger. 1. The production of active mixtures of pectic enzymesBiochemical Journal, 1961
- Enzymic Degradation of Pectic Acid and the Complex Nature of PolygalacturonaseNature, 1952
- The preparation of pure Di- and trigalacturonic acidsArchives of Biochemistry and Biophysics, 1952