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Literature summary for 3.1.2.6 extracted from

  • Irsch, T.; Krauth-Siegel, R.L.
    Glyoxalase II of African trypanosomes is trypanothione-dependent (2004), J. Biol. Chem., 279, 22209-22217.
    View publication on PubMed

Activating Compound

Activating Compound Comment Organism Structure
additional information no dependance on ionic strength Trypanosoma brucei

Cloned(Commentary)

Cloned (Comment) Organism
-
Trypanosoma brucei
DNA and amino acid sequence determination and analysis, overexpression as N-terminally His-tagged and as free enzyme in Escherichia coli Trypanosoma brucei

Inhibitors

Inhibitors Comment Organism Structure
additional information the enzyme is not sensitive against ionic strength Trypanosoma brucei

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.086
-
bis-(lactoyl)trypanothione pH 7.2, 25°C Trypanosoma brucei
0.086
-
bis-(lactoyl)trypanothione recombinant enzyme, pH 7.2, 25°C Trypanosoma brucei
0.108
-
mono-(lactoyl)trypanothione pH 7.2, 25°C Trypanosoma brucei
0.108
-
mono-(lactoyl)trypanothione recombinant enzyme, pH 7.2, 25°C Trypanosoma brucei
3
-
S-D-lactoylglutathione above, recombinant enzyme, pH 7.2, 25°C Trypanosoma brucei
3
-
lactoylglutathione or above, pH 7.2, 25°C Trypanosoma brucei

Metals/Ions

Metals/Ions Comment Organism Structure
Cobalt 0.6 mol per mol of protein Trypanosoma brucei
Iron 0.42 mol per mol of protein Trypanosoma brucei
additional information the enzyme contains the highly conserved metal binding motif THXHXDH, total metal ions per mol of enzyme: 1.5 for the His-tagged enzyme, 0.7-0.9 for the free enzyme Trypanosoma brucei
additional information sequence contains the highly conserved metal binding motif THXHXDH Trypanosoma brucei
Zinc 0.45 mol per mol of protein Trypanosoma brucei

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
25000
-
gel filtration Trypanosoma brucei
25000
-
recombinant enzyme, gel filtration Trypanosoma brucei
32000
-
1 * 32000, recombinant enzyme, SDS-PAGE Trypanosoma brucei
32000
-
1 * 32507, calculated, 1 * 32000, SDS-PAGE Trypanosoma brucei
32507
-
1 * 32507, calculated, 1 * 32000, SDS-PAGE Trypanosoma brucei

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
S-D-lactoylglutathione + H2O Trypanosoma brucei enzyme is involved in the detoxification of ketoaldehydes such as methylglyoxal, which is mainly a byproduct of glycolysis glutathione + D-lactate
-
?

Organism

Organism UniProt Comment Textmining
Trypanosoma brucei Q6KF36
-
-

Purification (Commentary)

Purification (Comment) Organism
recombinant enzyme with and without His-tag Trypanosoma brucei
recombinant His-tagged and non-tagged enzyme expressed in Escherichia coli Trypanosoma brucei

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
additional information
-
-
Trypanosoma brucei

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
bis-(lactoyl)trypanothione + H2O preferred substrate Trypanosoma brucei trypanothione + D-lactate trypathione is bis(glutathionyl)spermidine ?
bis-(lactoyl)trypanothione + H2O
-
Trypanosoma brucei D-lactate + trypanothione
-
?
lactoylglutathione + H2O enzyme does not show saturation kinetics up to 5 mM Trypanosoma brucei D-lactate + glutathione
-
?
mono-(lactoyl)trypanothione + H2O preferred substrate Trypanosoma brucei trypanothione + D-lactate trypathione is bis(glutathionyl)spermidine ?
mono-(lactoyl)trypanothione + H2O
-
Trypanosoma brucei D-lactate + trypanothione
-
?
S-D-lactoylglutathione + H2O
-
Trypanosoma brucei glutathione + D-lactate
-
?
S-D-lactoylglutathione + H2O enzyme is involved in the detoxification of ketoaldehydes such as methylglyoxal, which is mainly a byproduct of glycolysis Trypanosoma brucei glutathione + D-lactate
-
?

Subunits

Subunits Comment Organism
monomer 1 * 32000, recombinant enzyme, SDS-PAGE Trypanosoma brucei
monomer 1 * 32507, calculated, 1 * 32000, SDS-PAGE Trypanosoma brucei

Synonyms

Synonyms Comment Organism
acetoacetylglutathione hydrolase
-
Trypanosoma brucei
Germ cell specific protein
-
Trypanosoma brucei
GLO II
-
Trypanosoma brucei
glyoxalase II
-
Trypanosoma brucei
hydrolase, acetoacetylglutathione
-
Trypanosoma brucei
hydrolase, hydroxyacylglutathione
-
Trypanosoma brucei
Round spermatid protein RSP29
-
Trypanosoma brucei
S-2-hydroxylacylglutathione hydrolase
-
Trypanosoma brucei

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
25
-
assay at Trypanosoma brucei

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
7 8 broad Trypanosoma brucei
7 8 broad optimum Trypanosoma brucei

pI Value

Organism Comment pI Value Maximum pI Value
Trypanosoma brucei calculated from protein sequence
-
6
Trypanosoma brucei calculated 6.5 6