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Literature summary for 3.2.1.23 extracted from

  • Ghatak, A.; Guha, A.K.; Ray, L.
    Beta-D-galactosidase from Enterobacter cloacae: production and some physicochemical properties (2010), Appl. Biochem. Biotechnol., 162, 1678-1688.
    View publication on PubMed

Activating Compound

Activating Compound Comment Organism Structure
cetyl trimethyl ammonium bromide
-
Enterobacter cloacae

Inhibitors

Inhibitors Comment Organism Structure
EDTA
-
Enterobacter cloacae

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
2.805
-
2-nitrophenyl beta-D-galactopyranoside pH 9, 50°C, Vmax: 0.03745 mM/min/mg Enterobacter cloacae

Metals/Ions

Metals/Ions Comment Organism Structure
Cu2+
-
Enterobacter cloacae
Fe3+
-
Enterobacter cloacae
K+
-
Enterobacter cloacae
Mg2+ stimulates activity Enterobacter cloacae
Sn2+
-
Enterobacter cloacae
Zn2+
-
Enterobacter cloacae

Organism

Organism UniProt Comment Textmining
Enterobacter cloacae
-
-
-

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
2-nitrophenyl beta-D-galactopyranoside + H2O
-
Enterobacter cloacae 2-nitrophenol + beta-D-galactose
-
?

Synonyms

Synonyms Comment Organism
beta-galactosidase
-
Enterobacter cloacae

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
50
-
-
Enterobacter cloacae

Temperature Stability [°C]

Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
55
-
retains its activity for up to 1 h Enterobacter cloacae

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
9
-
-
Enterobacter cloacae