Galactan endo-1,6-beta-galactosidase

Galactan endo-1,6-beta-galactosidase (EC 3.2.1.164, endo-1,6-beta-galactanase) is an enzyme with systematic name endo-beta-(1->6)-galactanase. 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.

References

Brillouet, J.-M.; Williams, P.; Moutounet, M. (1991). "Purification and some properties of a novel endo-β-(1→6)-D-galactanase from Aspergillus niger". Agric. Biol. Chem. 55: 1565–1571. doi:10.1271/bbb1961.55.1565.
Okemoto K, Uekita T, Tsumuraya Y, Hashimoto Y, Kasama T (January 2003). "Purification and characterization of an endo-beta-(1-->6)-galactanase from Trichoderma viride". Carbohydrate Research. 338 (3): 219–30. doi:10.1016/s0008-6215(02)00405-6. PMID 12543554.
Kotake T, Kaneko S, Kubomoto A, Haque MA, Kobayashi H, Tsumuraya Y (February 2004). "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. doi:10.1042/BJ20031145. PMC 1223900. PMID 14565843.

External links

Galactan+endo-1,6-beta-galactosidase at the U.S. National Library of Medicine Medical Subject Headings (MeSH)

Hydrolase: sugar hydrolases (EC 3.2)

3.2.1: Glycoside hydrolases

Disaccharidase	Sucrase/Sucrase-isomaltase/Invertase Maltase Trehalase Lactase
Glucosidases	Cellulase Alpha-glucosidase Acid Neutral AB Neutral C Beta-glucosidase cytosolic Debranching enzyme
Other	Amylase Alpha-amylase Chitinase Lysozyme Neuraminidase NEU1 NEU2 NEU3 NEU4 Bacterial neuraminidase Viral neuraminidase Galactosidases Alpha Beta alpha-Mannosidase Glucuronidase Klotho Hyaluronidase Pullulanase Glucosylceramidase lysosomal non-lysosomal Galactosylceramidase Alpha-N-acetylgalactosaminidase NAGA Alpha-N-acetylglucosaminidase Fucosidase Hexosaminidase HEXA HEXB Iduronidase Maltase-glucoamylase Heparanase HPSE2

3.2.2: Hydrolysing
N-Glycosyl compounds

DNA glycosylases: Oxoguanine glycosylase

v t e Enzymes
Activity	Active site Binding site Catalytic triad Oxyanion hole Enzyme promiscuity Diffusion-limited enzyme Cofactor Enzyme catalysis
Regulation	Allosteric regulation Cooperativity Enzyme inhibitor Enzyme activator
Classification	EC number Enzyme superfamily Enzyme family List of enzymes
Kinetics	Enzyme kinetics Eadie–Hofstee diagram Hanes–Woolf plot Lineweaver–Burk plot Michaelis–Menten kinetics
Types	EC1 Oxidoreductases (list) EC2 Transferases (list) EC3 Hydrolases (list) EC4 Lyases (list) EC5 Isomerases (list) EC6 Ligases (list) EC7 Translocases (list)

Portal:

Biology

Category:

EC 3.2.1