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Literature summary for 4.2.1.3 extracted from

  • Uhrigshardt, H.; Walden, M.; John, H.; Anemuller, S.
    Purification and characterization of the first archaeal aconitase from the thermoacidophilic Sulfolobus acidocaldarius (2001), Eur. J. Biochem., 268, 1760-1771.
    View publication on PubMed

Inhibitors

Inhibitors Comment Organism Structure
Fluorocitrate
-
Sulfolobus acidocaldarius
trans-aconitate
-
Sulfolobus acidocaldarius
tricarballylate
-
Sulfolobus acidocaldarius

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.108
-
cis-aconitate pH 8.4, 75°C Sulfolobus acidocaldarius
0.37
-
isocitrate pH 8.4, 75°C Sulfolobus acidocaldarius
2.9
-
citrate pH 8.4, 75°C Sulfolobus acidocaldarius

Localization

Localization Comment Organism GeneOntology No. Textmining
cytosol
-
Sulfolobus acidocaldarius 5829
-

Metals/Ions

Metals/Ions Comment Organism Structure
Iron the enzyme hosts an interconvertible [3Fe-4S] cluster Sulfolobus acidocaldarius

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
96000
-
x * 96000, SDS-PAGE Sulfolobus acidocaldarius
145000
-
gel filtration Sulfolobus acidocaldarius

Organism

Organism UniProt Comment Textmining
Sulfolobus acidocaldarius
-
-
-

Oxidation Stability

Oxidation Stability Organism
high oxygen sensitivity Sulfolobus acidocaldarius

Purification (Commentary)

Purification (Comment) Organism
-
Sulfolobus acidocaldarius

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
55
-
-
Sulfolobus acidocaldarius

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
cis-aconitate + H2O
-
Sulfolobus acidocaldarius citrate
-
?
isocitrate
-
Sulfolobus acidocaldarius ?
-
?

Subunits

Subunits Comment Organism
? x * 96000, SDS-PAGE Sulfolobus acidocaldarius

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
75
-
-
Sulfolobus acidocaldarius

Temperature Range [°C]

Temperature Minimum [°C] Temperature Maximum [°C] Comment Organism
50 90 50°C: about 40% of maximal activity, 90°C: about 45% of maximal activity Sulfolobus acidocaldarius

Temperature Stability [°C]

Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
80
-
1 h, stable Sulfolobus acidocaldarius
95
-
half-life: 14 min Sulfolobus acidocaldarius

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
7.4
-
-
Sulfolobus acidocaldarius

pH Range

pH Minimum pH Maximum Comment Organism
6.4 8.2 pH 6.4: about 60% of maximal activity, pH 8.2: about 75% of maximal activity Sulfolobus acidocaldarius