Arabinogalactan endo-1,4-beta-galactosidase

Arabinogalactan endo-beta-1,4-galactanase (EC 3.2.1.89, endo-1,4-beta-galactanase, galactanase, arabinogalactanase, ganB (gene)) is an enzyme with systematic name arabinogalactan 4-beta-D-galactanohydrolase.[1][2][3] This enzyme catalyses the following chemical reaction

The enzyme specifically hydrolyses (1->4)-beta-D-galactosidic linkages in type I arabinogalactans.
Arabinogalactan endo-beta-1,4-galactanase
Identifiers
EC no.3.2.1.89
CAS no.58182-40-4
Databases
IntEnzIntEnz view
BRENDABRENDA entry
ExPASyNiceZyme view
KEGGKEGG entry
MetaCycmetabolic pathway
PRIAMprofile
PDB structuresRCSB PDB PDBe PDBsum
Search
PMCarticles
PubMedarticles
NCBIproteins

This enzyme is isolated from the bacterium Bacillus subtilis.

References
  1. 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.
  2. Labavitch JM, Freeman LE, Albersheim P (October 1976). "Structure of plant cell walls. Purification and characterization of a beta-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.
  3. Shipkowski S, Brenchley JE (December 2006). "Bioinformatic, genetic, and biochemical evidence that some glycoside hydrolase family 42 beta-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.
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