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Information on EC - endo-alpha-N-acetylgalactosaminidase

for references in articles please use BRENDA:EC3.2.1.97
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IUBMB Comments
The enzyme catalyses the liberation of Gal-(1->3)-beta-GalNAc alpha-linked to serine or threonine residues of mucin-type glycoproteins. EngBF from the bacterium Bifidobacterium longum specifically acts on core 1-type O-glycan to release the disaccharide Gal-(1->3)-beta-GalNAc. The enzymes from the bacteria Clostridium perfringens, Enterococcus faecalis, Propionibacterium acnes and Alcaligenes faecalis show broader specificity (e.g. they can also release the core 2 trisaccharide Gal-(1->3)-beta-(GlcNAc-(1->6)-beta)-GalNAc or the core 3 disaccharide GlcNAc-(1->3)-beta-GalNAc) [1,2]. The enzyme may play an important role in the degradation and utilization of mucins having core 1 O-glycan.
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The expected taxonomic range for this enzyme is: Bacteria, Eukaryota
endo-alpha-n-acetylgalactosaminidase, engcp, engbf, nagbb, spgh101, endo-alpha-galnac-ase, endo-ef, endo-beta-n-acetylgalactosaminidase, more
beta-D-galactosyl-(1->3)-N-acetyl-alpha-D-galactosaminyl-[glycoprotein]-L-serine/L-threonine + H2O = beta-D-galactosyl-(1->3)-N-acetyl-D-galactosamine + [glycoprotein]-L-serine/L-threonine
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