EC 4.2.1.33: 3-isopropylmalate dehydratase
LyasesOpen in Browse
CatLog read 7 records for EC 4.2.1.33 from 1 paper, for 1 organism. Names in these papers: isopropylmalate isomerase (citramalate/isopropylmalate isomerase) MJ0499/MJ1277.
Read from the paper by an AI model and checked against the paper by a second, separate AI run; code converted the units.
CatLog also holds 3 records for EC 4.2.1.33 that are not yet re-read: from its earlier version, built from the enzyme databases and partly checked against the papers. All records for EC 4.2.1.33 in Browse.
Papers
| Paper | Organisms | Records |
|---|---|---|
| Enzymology and evolution of the pyruvate pathway to 2-oxobutyrate in Methanocaldococcus jannaschii | Methanocaldococcus jannaschii | 7 |
Records
| Enzyme | Organism | Substrate | kcat (s⁻¹) | Km (mM) | kcat/Km (mM⁻¹ s⁻¹) | Conditions | Paper | Open record |
|---|---|---|---|---|---|---|---|---|
| isopropylmalate isomerase (citramalate/isopropylmalate isomerase) MJ0499/MJ1277 | Methanocaldococcus jannaschii | (R)-2-hydroxy-2-methylbutanedioate ((R)-citramalate) | 1.6 | 0.81 | 2 | pH 7.5, 60 °C | PMID 17449626 | Open record: isopropylmalate isomerase (citramalate/isopropylmalate isomerase) MJ0499/MJ1277, (R)-2-hydroxy-2-methylbutanedioate ((R)-citramalate) |
| isopropylmalate isomerase (citramalate/isopropylmalate isomerase) MJ0499/MJ1277 | Methanocaldococcus jannaschii | 2-isopropylmalate (racemic, commercial) | 4.5 | 1.9 | 2.4 | pH 7.5, 60 °C | PMID 17449626 | Open record: isopropylmalate isomerase (citramalate/isopropylmalate isomerase) MJ0499/MJ1277, 2-isopropylmalate (racemic, commercial) |
| isopropylmalate isomerase (citramalate/isopropylmalate isomerase) MJ0499/MJ1277 | Methanocaldococcus jannaschii | citraconate (cis-2-methylbutenedioate, methylmaleate)continuous UV absorbance assay of hydrolyase activity | 16 | 0.08 | 200 | pH 7.5, 60 °C | PMID 17449626 | Open record: isopropylmalate isomerase (citramalate/isopropylmalate isomerase) MJ0499/MJ1277, citraconate (cis-2-methylbutenedioate, methylmaleate) |
| isopropylmalate isomerase (citramalate/isopropylmalate isomerase) MJ0499/MJ1277 | Methanocaldococcus jannaschii | citraconate (cis-2-methylbutenedioate, methylmaleate)coupled assay: excess IPMDHMj (30 µg/ml) + 5 mM NAD+ | 14 | 0.04 | 350 | pH 7.5, 60 °C | PMID 17449626 | Open record: isopropylmalate isomerase (citramalate/isopropylmalate isomerase) MJ0499/MJ1277, citraconate (cis-2-methylbutenedioate, methylmaleate) |
| isopropylmalate isomerase (citramalate/isopropylmalate isomerase) MJ0499/MJ1277 | Methanocaldococcus jannaschii | DL-threo-3-isopropylmalate (racemic; physiological isomer (2R,3S)-3-isopropylmalate) | 1.9 | 0.039 | 50 | pH 7.5, 60 °C | PMID 17449626 | Open record: isopropylmalate isomerase (citramalate/isopropylmalate isomerase) MJ0499/MJ1277, DL-threo-3-isopropylmalate (racemic; physiological isomer (2R,3S)-3-isopropylmalate) |
| isopropylmalate isomerase (citramalate/isopropylmalate isomerase) MJ0499/MJ1277 | Methanocaldococcus jannaschii | maleate (cis-butenedioate)continuous UV absorbance assay of hydrolyase activity | 36 | 0.4 | 90 | pH 7.5, 60 °C | PMID 17449626 | Open record: isopropylmalate isomerase (citramalate/isopropylmalate isomerase) MJ0499/MJ1277, maleate (cis-butenedioate) |
| isopropylmalate isomerase (citramalate/isopropylmalate isomerase) MJ0499/MJ1277 | Methanocaldococcus jannaschii | maleate (cis-butenedioate)coupled assay: excess IPMDHMj (30 µg/ml) + 5 mM NAD+ | 20 | 0.18 | 110 | pH 7.5, 60 °C | PMID 17449626 | Open record: isopropylmalate isomerase (citramalate/isopropylmalate isomerase) MJ0499/MJ1277, maleate (cis-butenedioate) |