Molecular cloning, expression, and characterization of a novel endo-α-N-acetylgalactosaminidase from Enterococcus faecalis

Hatsumi M. Goda, Kota Ushigusa, Hiromi Ito, Nozomu Okino, Hisashi Narimatsu, Makoto Ito

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17 Citations (Scopus)


We report here the molecular cloning, expression and characterization of a novel endo-α-N-acetylgalactosaminidase, classified into the GH101 family, from Enterococcus faecalis (endo-EF). The recombinant endo-EF was found to catalyze the liberation of core1-disaccharides (Galβ1-3GalNAc) from core1-pNP (Galβ1-3GalNAcα-pNP) like other GH101 family enzymes. However, endo-EF seems to differ in specificity from the GH101 enzymes reported to date, because it was able to release trisaccharides from core2-pNP (Galβ1-3[GlcNAcβ1-6]GalNAcα-pNP) and tetrasaccharides from Gal-core2-pNP (Galβ1-3[Galβ1-3GlcNAcβ1-6]GalNAcα-pNP). Interestingly, the enzyme could transfer not only core1-disaccharides but also core2-trisaccharides to alkanols generating alkyl-oligosaccharides. Endo-EF should facilitate O-glycoprotein research.

Original languageEnglish
Pages (from-to)541-546
Number of pages6
JournalBiochemical and Biophysical Research Communications
Issue number4
Publication statusPublished - Oct 31 2008


All Science Journal Classification (ASJC) codes

  • Biophysics
  • Biochemistry
  • Molecular Biology
  • Cell Biology

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