Galactan endo-1,6-beta-galactosidase explained

Galactan endo-1,6-beta-galactosidase
Ec Number:	3.2.1.164

Galactan endo-1,6-beta-galactosidase (endo-1,6-beta-galactanase) is an enzyme with systematic name endo-beta-(1->6)-galactanase.^{[1] [2] [3]} This enzyme catalyses the following chemical reaction

Endohydrolysis of (1->6)-beta-D-galactosidic linkages in arabinogalactan proteins and (1->3):(1->6)-beta-galactans to yield galactose and (1->6)-beta-galactobiose as the final products

The enzyme specifically hydrolyses 1,6-beta-D-galactooligosaccharides with a degree of polymerization (DP) higher than 3.

Notes and References

1. Purification and some properties of a novel endo-β-(1→6)-D-galactanase from Aspergillus niger . Brillouet, J.-M. . Williams, P. . Moutounet, M. . Agric. Biol. Chem. . 1991 . 55 . 1565–1571 . 10.1271/bbb1961.55.1565. free .
2. Okemoto K, Uekita T, Tsumuraya Y, Hashimoto Y, Kasama T . Purification and characterization of an endo-beta-(1-->6)-galactanase from Trichoderma viride . Carbohydrate Research . 338 . 3 . 219–30 . January 2003 . 12543554 . 10.1016/s0008-6215(02)00405-6 .
3. Kotake T, Kaneko S, Kubomoto A, Haque MA, Kobayashi H, Tsumuraya Y . Molecular cloning and expression in Escherichia coli of a Trichoderma viride endo-beta-(1-->6)-galactanase gene . The Biochemical Journal . 377 . Pt 3 . 749–55 . February 2004 . 14565843 . 1223900 . 10.1042/BJ20031145 .