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Literature summary for 4.2.2.7 extracted from

  • Luo, Y.; Huang, X.; McKeehan, W.L.
    High yield, purity and activity of soluble recombinant Bacteroides thetaiotaomicron GST-heparinase I from Escherichia coli (2007), Arch. Biochem. Biophys., 460, 17-24.
    View publication on PubMedView publication on EuropePMC

Activating Compound

Activating Compound Comment Organism Structure
additional information catalytic activity of heparinase I requires a reducing environment Bacteroides thetaiotaomicron

Application

Application Comment Organism
analysis the GSTfused enzyme with high purity and specific activity may be useful in solid phase clinical applications and sequence characterizations of structurally specific heparin and heparan sulfate motifs Bacteroides thetaiotaomicron

Cloned(Commentary)

Cloned (Comment) Organism
expression in Escherichia coli as a fusion protein with GST at the N-terminus Bacteroides thetaiotaomicron

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.0023
-
heparin
-
Bacteroides thetaiotaomicron

Metals/Ions

Metals/Ions Comment Organism Structure
Ca2+ purified GST fusion enzyme requires Ca2+. Activity of the GST-heparinase I is stimulated 7fold by 1 mM Ca2+. Mg2+ and Mn2+ are much less effective at the same concentrations while Cu2+ and Zn2+ are ineffective Bacteroides thetaiotaomicron

Organism

Organism UniProt Comment Textmining
Bacteroides thetaiotaomicron
-
-
-

Purification (Commentary)

Purification (Comment) Organism
enzyme expressed in Escherichia coli as a fusion protein with GST at the N-terminus, one-step affinity purification Bacteroides thetaiotaomicron

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
heparin
-
Bacteroides thetaiotaomicron ?
-
?

Synonyms

Synonyms Comment Organism
heparinase I
-
Bacteroides thetaiotaomicron

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
6.7 7.3
-
Bacteroides thetaiotaomicron

pH Range

pH Minimum pH Maximum Comment Organism
5.8 7.9 pH 5.8: about 55% of maximal activity, pH 7.9: about 55% of maximal activity Bacteroides thetaiotaomicron