Arabinogalactan endo-β-1,4-galactanase

Arabinogalactan endo-β-1,4-galactanase (EC 3.2.1.89, endo-1,4-β-galactanase, galactanase, arabinogalactanase, ganB (gene)) is an enzyme with systematic name arabinogalactan 4-β-D-galactanohydrolase. It specifically catalyses the hydrolysis (1→4)-β-D-galactosidic linkages in type I arabinogalactans.

It is isolated from the bacterium Bacillus subtilis.

References

Emi, S.; Yamamoto, T. (1972). "Purification and properties of several galactanases of Bacillus subtilis var. amylosacchariticus". Agric. Biol. Chem. 36: 1945–1954. doi:10.1271/bbb1961.36.1945.
Labavitch JM, Freeman LE, Albersheim P (October 1976). "Structure of plant cell walls. Purification and characterization of a β-1,4-galactanase which degrades a structural component of the primary cell walls of dicots". The Journal of Biological Chemistry. 251 (19): 5904–10. PMID 823153.
Shipkowski S, Brenchley JE (December 2006). "Bioinformatic, genetic, and biochemical evidence that some glycoside hydrolase family 42 β-galactosidases are arabinogalactan type I oligomer hydrolases". Applied and Environmental Microbiology. 72 (12): 7730–8. doi:10.1128/aem.01306-06. PMC 1694227. PMID 17056685.

External links

Arabinogalactan+endo-beta-1,4-galactanase 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