Any feedback?
Please rate this page
(literature.php)
(0/150)

BRENDA support

Literature summary for 3.2.1.97 extracted from

  • Endo, Y.; Kobata, A.
    Partial purification and characterization of an endo-alpha-N-acetylgalactosaminidase from the culture medium of Diplococcus pneumoniae (1976), J. Biochem., 80, 1-8.
    View publication on PubMed

Inhibitors

Inhibitors Comment Organism Structure
Ca2+ 2.5 mM CaCl2, 3.3% inhibition Streptococcus pneumoniae
EDTA 2.5 mM, 63% inhibition Streptococcus pneumoniae
Mg2+ 2.5 mM, 2.2% inhibition Streptococcus pneumoniae
Mn2+ 2.5 mM, 44% inhibition Streptococcus pneumoniae
p-chloromercuribenzenesulfonate 1 mM, 60% inhibition Streptococcus pneumoniae
Zn2+ 2.5 mM, 66% inhibition Streptococcus pneumoniae

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
additional information
-
additional information Km for glycopeptides obtained by trypsin digestion of human erythrocyte membrane Streptococcus pneumoniae

Organism

Organism UniProt Comment Textmining
Streptococcus pneumoniae
-
-
-

Purification (Commentary)

Purification (Comment) Organism
partial Streptococcus pneumoniae

Source Tissue

Source Tissue Comment Organism Textmining
culture medium
-
Streptococcus pneumoniae
-

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
additional information
-
-
Streptococcus pneumoniae

Storage Stability

Storage Stability Organism
-20°C, stable for 3 months Streptococcus pneumoniae

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
glycoprotein + H2O disialized human erythrocyte membrane glycoprotein, porcine submaxillarry mucin Streptococcus pneumoniae Galbeta(1-3)GalNAc + ? no oligosaccharides larger than trisaccharides are liberated from porcine submaxillarry mucin ?
glycoprotein + H2O release of Galbeta(1-3)GalNAc from glycoproteins possesing Ser or Thr O-glycosidic linkages Streptococcus pneumoniae Galbeta(1-3)GalNAc + ? no oligosaccharides larger than trisaccharides are liberated from porcine submaxillarry mucin ?

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
6
-
-
Streptococcus pneumoniae

pH Range

pH Minimum pH Maximum Comment Organism
5.5 7 about 50% of maximal activity at pH 5.5 and at pH 7.0 Streptococcus pneumoniae