Activating Compound | Comment | Organism | Structure |
---|---|---|---|
AMP | allosteric activation | Saccharomyces cerevisiae |
Cloned (Comment) | Organism |
---|---|
expression of His-tagged wild-type and mutant enzymes in yeast strain IDH12DELTAL deficient in both subunits of the enzyme | Saccharomyces cerevisiae |
Protein Variants | Comment | Organism |
---|---|---|
A108R/F136Y/T241D/N245D | site-directed mutagenesis, residues of subunit IDH1 mutant is unable to bind AMP, ligand-binding analysis | Saccharomyces cerevisiae |
A108R/F136Y/T241D/N245D/R114A/Y142F/D248T/D252N | site-directed mutagenesis, residues of subunit IDH1 are A108R, F136Y, T241D, and N245D, residues of subunit IDH2 are R114A, Y142F, D248T, and D252N, mutant is unable to bind AMP, ligand-binding analysis | Saccharomyces cerevisiae |
R114A/Y142F/D248T/D252N | site-directed mutagenesis, residues of subunit subunit IDH2, ligand-binding analysis | Saccharomyces cerevisiae |
S92A | site-directed mutagenesis, residue of subunit IDH1, reduction of isocitrate substrate binding sites by half, detrimental effects on isocitrate binding and respective kinetic defects in catalysis and allosteric activation by AMP, ligand-binding analysis | Saccharomyces cerevisiae |
S92A/S98A | site-directed mutagenesis, residue of subunit IDH1 is S92, residue of subunit IDH2 is S98, ligand-binding analysis | Saccharomyces cerevisiae |
S98A | site-directed mutagenesis, residue of subunit IDH2, reduction of isocitrate substrate binding sites by half, detrimental effects on isocitrate binding and respective kinetic defects in catalysis and allosteric activation by AMP, ligand-binding analysis | Saccharomyces cerevisiae |
KM Value [mM] | KM Value Maximum [mM] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|
additional information | - |
additional information | kinetics and ligand binding | Saccharomyces cerevisiae |
Metals/Ions | Comment | Organism | Structure |
---|---|---|---|
Mg2+ | - |
Saccharomyces cerevisiae |
Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
---|---|---|---|---|---|---|
DL-isocitrate + NAD+ | Saccharomyces cerevisiae | - |
2-oxoglutarate + CO2 + NADH | - |
? |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Saccharomyces cerevisiae | - |
- |
- |
Purification (Comment) | Organism |
---|---|
recombinant His-tagged wild-type and mutant enzymes from strain IDH12DELTAL by nickel affinity chromatography | Saccharomyces cerevisiae |
Storage Stability | Organism |
---|---|
4°C, recombinant wild-type enzyme, in affinity elution buffer containing 50 mM sodium phosphate, pH 7.5, 300 mM NaCl, and 200 mM imidazole, stable for several weeks | Saccharomyces cerevisiae |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
DL-isocitrate + NAD+ | - |
Saccharomyces cerevisiae | 2-oxoglutarate + CO2 + NADH | - |
? | |
DL-isocitrate + NAD+ | isocitrate binds at 2 functionally distinct sites | Saccharomyces cerevisiae | 2-oxoglutarate + CO2 + NADH | - |
? |
Subunits | Comment | Organism |
---|---|---|
More | model of binding sites for isocitrate of the 2 different subunits | Saccharomyces cerevisiae |
octamer | alpha4beta4, subunits are termed IDH1 and IDH2 | Saccharomyces cerevisiae |
Synonyms | Comment | Organism |
---|---|---|
IDH | - |
Saccharomyces cerevisiae |
NAD+-specific isocitrate dehydrogenase | - |
Saccharomyces cerevisiae |
Temperature Optimum [°C] | Temperature Optimum Maximum [°C] | Comment | Organism |
---|---|---|---|
24 | - |
assay at | Saccharomyces cerevisiae |
pH Optimum Minimum | pH Optimum Maximum | Comment | Organism |
---|---|---|---|
7.4 | - |
assay at | Saccharomyces cerevisiae |
Cofactor | Comment | Organism | Structure |
---|---|---|---|
NAD+ | specific for | Saccharomyces cerevisiae |