3.2.1.164: galactan endo-1,6-beta-galactosidase

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For detailed information about galactan endo-1,6-beta-galactosidase, go to the full flat file.

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 =

Synonyms

6GAL, beta-(1,6)-galactanase, beta-1,6-galactanase, beta-D-galactanase, ebg, endo-beta-(1,6)-D-galactanase, endo-beta-(1-6)-D-galactanase, endo-beta-(1-6)-galactanase, endo-beta-(1->6)-D-galactanase, endo-beta-(1->6)-galactanase, endo-beta-1,6-D-galactanase, endo-beta-1,6-galactanase, GAL1, More, Tv6GAL, type II arabinogalactan-degrading enzyme

ECTree

     3 Hydrolases

         3.2 Glycosylases

             3.2.1 Glycosidases, i.e. enzymes that hydrolyse O- and S-glycosyl compounds

                3.2.1.164 galactan endo-1,6-beta-galactosidase

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Results	in table
21	AA Sequence
1	CAS Registry Number
4	Cloned(Commentary)
1	Expression
3	General Information
7	Inhibitors
2	KM Value [mM]
2	Localization
1	Metals/Ions
13	Molecular Weight [Da]
2	Natural Substrates/ Products (Substrates)
9	Organism
4	pH Optimum
1	pH Range
2	pH Stability
1	Posttranslational Modification
6	Purification (Commentary)
3	Reaction
9	Reference
5	Source Tissue
5	Specific Activity [micromol/min/mg]
16	Substrates and Products (Substrate)
7	Subunits
21	Synonyms
4	Temperature Optimum [°C]
1	Temperature Range [°C]
4	Temperature Stability [°C]

General Information

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General Information on EC 3.2.1.164 - galactan endo-1,6-beta-galactosidase

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GENERAL INFORMATION

ORGANISM

UNIPROT

COMMENTARY

LITERATURE

evolution

Colletotrichum lindemuthianum

A0A1L2S4I5

the enzyme belongs to the glycosylhydrolase family 30, GH30

755015

physiological function

Colletotrichum lindemuthianum

A0A1L2S4I5

endo-breta-(1,6)-D-galactanase is a debranching hemicellulase that catalyzes the hydrolysis of beta-(1,6)-galactosyl side chains in arabinogalactans (AGs), producing beta-(1,6)-galacto-oligomers and beta-(1,6)-D-galactobiose. The enzyme plays a critical role in cell wall degradation. Arabinogalactan proteins (AGPs) are putative co-receptors in signaling pathways that function during growth and plant developmen. AGPs also play a key role in both beneficial and pathogenic root-microorganism interactions. They are essential for root cells to recognize beneficial microorganisms as well for root cells to trigger localized and efficient defense responses to control pathogenic organisms. Since the carbohydrate groups in AGPs are critical for their function, it is conceivable to hypothesize that the pathogenic race of Colletotrichum lindemuthianum, which more rapidly expresses gene ebg at higher levels in the presence of plant cell wall polysaccharides, is better adapted to degrade AGPs for the establishment of the infection as the non-pathogenic race

755015

additional information

Colletotrichum lindemuthianum

A0A1L2S4I5

putative DNA-binding sites for Cre, Xlnr, ACEI, PacC and Gal4 transcriptional factors are predicted in ebg genes from Colletotrichum species. Identification of potential functional and structural domains, protein structure homology modelling and structure comaprisons. In enzyme EBG, the catalytic proton donor E191 is positioned in a coil and the catalytic nucleophile E293 is positioned in a beta-strand

755015