KEGG   ENZYME: 3.2.1.164Help
Entry
EC 3.2.1.164                Enzyme                                 

Name
galactan endo-1,6-beta-galactosidase;
endo-1,6-beta-galactanase
Class
Hydrolases;
Glycosylases;
Glycosidases, i.e. enzymes that hydrolyse O- and S-glycosyl compounds
BRITE hierarchy
Sysname
endo-beta-(1->6)-galactanase
Reaction(IUBMB)
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
Comment
The enzyme specifically hydrolyses 1,6-beta-D-galactooligosaccharides with a degree of polymerization (DP) higher than 3, and their acidic derivatives with 4-O-methylglucosyluronate or glucosyluronate groups at the non-reducing terminals [2]. 1,3-beta-D- and 1,4-beta-D-galactosyl residues cannot act as substrates. The enzyme can also hydrolyse alpha-L-arabinofuranosidase-treated arabinogalactan protein (AGP) extracted from radish roots [2,3]. AGPs are thought to be involved in many physiological events, such as cell division, cell expansion and cell death [3].
History
EC 3.2.1.164 created 2007
Orthology
K18579  galactan endo-1,6-beta-galactosidase
Genes
NCR: NCU09702
NTE: NEUTE1DRAFT147849(NEUTE1DRAFT_147849)
SMP: SMAC_06057
PAN: PODANSg1890
MTM: MYCTH_2301720
TRE: TRIREDRAFT_110894
ELA: UCREL1_2756
PTE: PTT_12618
BZE: COCCADRAFT_3802
BSC: COCSADRAFT_178809
 » show all
Taxonomy
Reference
1
  Authors
Brillouet, J.-M., Williams, P. and Moutounet, M.
  Title
Purification and some properties of a novel endo-beta-(1->6)-D-galactanase from Aspergillus niger.
  Journal
Agric Biol Chem 55:1565-1571 (1991)
Reference
2  [PMID:12543554]
  Authors
Okemoto K, Uekita T, Tsumuraya Y, Hashimoto Y, Kasama T.
  Title
Purification and characterization of an endo-beta-(1-->6)-galactanase from Trichoderma viride.
  Journal
Carbohydr Res 338:219-30 (2003)
DOI:10.1016/S0008-6215(02)00405-6
  Sequence
Reference
3  [PMID:14565843]
  Authors
Kotake T, Kaneko S, Kubomoto A, Haque MA, Kobayashi H, Tsumuraya Y.
  Title
Molecular cloning and expression in Escherichia coli of a Trichoderma viride endo-beta-(1-->6)-galactanase gene.
  Journal
Biochem J 377:749-55 (2004)
DOI:10.1042/BJ20031145
  Sequence
Other DBs
ExplorEnz - The Enzyme Database: 3.2.1.164
IUBMB Enzyme Nomenclature: 3.2.1.164
ExPASy - ENZYME nomenclature database: 3.2.1.164
BRENDA, the Enzyme Database: 3.2.1.164

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