KM Value [mM] | KM Value Maximum [mM] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|
additional information | - |
additional information | two values are obtained for KM-value with isocitrate as substrate, depending on substrate concentration | Escherichia coli | |
0.016 | - |
cis-aconitate | 20°C, pH 7.4, enzyme form AcnB | Escherichia coli | |
0.058 | - |
cis-aconitate | 20°C, pH 7.4, enzyme form AcnA | Escherichia coli | |
1.16 | - |
citrate | 20°C, pH 7.4, enzyme form AcnA | Escherichia coli | |
11 | - |
citrate | 20°C, pH 7.4, enzyme form AcnB | Escherichia coli |
Metals/Ions | Comment | Organism | Structure |
---|---|---|---|
Iron | a significant proportion of the enzyme is in the inactive [3Fe-4S]1+ or apoenzyme forms. AcnB contains a much higher proportion of inactive enzyme than AcnA | Escherichia coli |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Escherichia coli | - |
and strain JRG3171, contains two major aconitases, AcnA and AcnB | - |
Escherichia coli JRG2387 | - |
and strain JRG3171, contains two major aconitases, AcnA and AcnB | - |
Purification (Comment) | Organism |
---|---|
AcnA and AcnB | Escherichia coli |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
cis-aconitate + H2O | - |
Escherichia coli | ? | - |
? | |
cis-aconitate + H2O | - |
Escherichia coli JRG2387 | ? | - |
? | |
citrate | - |
Escherichia coli | cis-aconitate + H2O | - |
? | |
citrate | - |
Escherichia coli JRG2387 | cis-aconitate + H2O | - |
? | |
isocitrate | - |
Escherichia coli | cis-aconitate + H2O | - |
? | |
isocitrate | - |
Escherichia coli JRG2387 | cis-aconitate + H2O | - |
? |
pH Optimum Minimum | pH Optimum Maximum | Comment | Organism |
---|---|---|---|
7.5 | - |
enzyme form AcnA and AcnB, the maximal activity of AcnB is nearly 2fold the activity of AcnA | Escherichia coli |
pH Minimum | pH Maximum | Comment | Organism |
---|---|---|---|
5 | 10 | pH 5.0: about 75% of maximal activity, pH 10.0: about 60% of maximal activity, AcnA | Escherichia coli |
6 | 9 | pH 6.0: about 55% of maximal activity, pH 9.0: about 20% of maximal activity, AcnB | Escherichia coli |