EC Number | Inhibitors | Comment | Organism | Structure |
---|---|---|---|---|
1.2.1.105 | 2-oxoglutarate | substrate inhibition above 4 mM | Azotobacter vinelandii |
EC Number | KM Value [mM] | KM Value Maximum [mM] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|---|
1.2.1.105 | additional information | - |
additional information | two substrate-binding modes are revealed at different degrees of saturation of the enzyme with 2-oxoglutarate. At low substrate concentrations, 0.001-0.01 mM, the binding mainly depends on the interaction of the enzyme with the substrate carbonyl groups. At 0.1-1 mM the relative contribution of the 2-oxo group in the binding increases | Azotobacter vinelandii | |
1.2.1.105 | 0.15 | - |
2-oxoglutarate | - |
Azotobacter vinelandii |
EC Number | Molecular Weight [Da] | Molecular Weight Maximum [Da] | Comment | Organism |
---|---|---|---|---|
1.2.1.105 | 103000 | - |
x * 103000, 2-oxoglutarate dehydrogenase subunit, SDS-PAGE | Azotobacter vinelandii |
EC Number | Organism | UniProt | Comment | Textmining |
---|---|---|---|---|
1.2.1.105 | Azotobacter vinelandii | - |
- |
- |
EC Number | Purification (Comment) | Organism |
---|---|---|
1.2.1.105 | 2-oxoglutarate dehydrogenase complex | Azotobacter vinelandii |
EC Number | Reaction | Comment | Organism | Reaction ID |
---|---|---|---|---|
1.2.1.105 | 2-oxoglutarate + [dihydrolipoyllysine-residue succinyltransferase] lipoyllysine = [dihydrolipoyllysine-residue succinyltransferase] S-succinyldihydrolipoyllysine + CO2 | the enzyme complex catalyzes the reaction : 2-oxoglutarate + CoA + NAD+--> succinyl-CoA + CO2 + NADH, the following partial reactions are catalyzed: 1. HOOC(CH2)2COCOOH + (thiamine diphosphate)-E1--> (HOOC(CH2)2 CHOH-thiamine-diphosphate)-E1 + CO2, 2. (HOOC(CH2)2CH OH-thiamine-diphosphate)-E1 + (LipS2)-E2--> (HOOC(CH)2 CO-(SLipSH))-E2 + (thiamine-diphosphate)-E1, 3. (HOOC(CH2)2CO-(SLipSH))-E2 + HSCoA--> (Lip(SH)2)-E2 + HOOC(CH2)2CO-SCoA, 4. (Lip(SH)2)-E2 + E3-FAD--> (LipS2)-E2 + reduced E3-FAD, 5. reduced E3-FAD + NAD+--> E3-FAD + NADH | Azotobacter vinelandii |
EC Number | Specific Activity Minimum [µmol/min/mg] | Specific Activity Maximum [µmol/min/mg] | Comment | Organism |
---|---|---|---|---|
1.2.1.105 | additional information | - |
specific activity of the 2-oxoglutarate dehydrogenase complex | Azotobacter vinelandii |
EC Number | Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|---|
1.2.1.105 | 2-oxoglutarate + lipoamide | - |
Azotobacter vinelandii | S-succinyldihydrolipoamide + CO2 | - |
? | |
1.2.1.105 | additional information | enzyme complex is also active with 2-oxoadipate | Azotobacter vinelandii | ? | - |
? |
EC Number | Subunits | Comment | Organism |
---|---|---|---|
1.2.1.105 | ? | x * 103000, 2-oxoglutarate dehydrogenase subunit, SDS-PAGE | Azotobacter vinelandii |
EC Number | Cofactor | Comment | Organism | Structure |
---|---|---|---|---|
1.2.1.105 | thiamine diphosphate | formation of a precatalytic complex SE between the substrate and the 2-oxoglutarate dehydrogenase component before the catalytic complex ES, in which the substrate is added to the thiamin diphosphate cofactor | Azotobacter vinelandii |