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Literature summary for 4.2.1.33 extracted from

  • Reichenbecher Jr, V.E.; Gross, S.R.
    Structural features of normal and complemented forms of the Neurospora isopropylmalate isomerase (1978), J. Bacteriol., 133, 802-810.
    View publication on PubMedView publication on EuropePMC

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
additional information
-
complementation pair enzymes have higher molecular weights of 169000-185000 Neurospora crassa
88500
-
sucrose density gradient centrifugation, gel filtration Neurospora crassa

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
2-isopropylmaleate + H2O Neurospora crassa second of three reactions of leucine biosynthesis ?
-
?

Organism

Organism UniProt Comment Textmining
Neurospora crassa
-
wild type and complementing Leu-2 mutants
-

Purification (Commentary)

Purification (Comment) Organism
-
Neurospora crassa

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
additional information
-
-
Neurospora crassa
54000
-
-
Neurospora crassa

Storage Stability

Storage Stability Organism
-20°C, sodium phosphate buffer, pH 7.2, 6 M urea, several days Neurospora crassa

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
2-isopropylmaleate + H2O second of three reactions of leucine biosynthesis Neurospora crassa ?
-
?

Subunits

Subunits Comment Organism
More amino acid analysis, protein contains hinge regions that are very sensitive to proteolytic attack Neurospora crassa
multimer active as monomer, can aggregate to dimers or multimers in cell Neurospora crassa

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
34
-
enzyme assay at Neurospora crassa

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
6
-
enzyme assay at Neurospora crassa