Any feedback?
Please rate this page

BRENDA support

Literature summary extracted from

  • Maruyama, K.
    Purification and properties of 2-pyrone-4,6-dicarboxylate hydrolase (1983), J. Biochem., 93, 557-565.
    View publication on PubMed

General Stability

EC Number General Stability Organism aged enzyme preparation is fully reactivated by preincubation at 24°C for 10 min with an excess amount of dithiothreitol, cysteine or GSH Pseudomonas straminea


EC Number Inhibitors Comment Organism Structure Co(NO3)2 inhibits hydrolysis reaction by 59.9% Pseudomonas straminea Cu(NO3)2 inhibits synthesis reaction Pseudomonas straminea HgCl2
Pseudomonas straminea Mn(NO3)2 inhibits hydrolysis reaction by 62.1% Pseudomonas straminea additional information monoiodoacetate had essentially no effect, Mg(NO3)2, Ni(NO3)2, Ca(NO3)2, Cr(NO3)3 and Fe(NO3)3 shows essentially no effect, KCN and various metal chelating reagents including EDTA, tiron, 1,10-phenanthroline, 2,2'-bipyridine, diethyldithiocarbonate and 8-hydroxyquinoline shows no significant effect Pseudomonas straminea N-ethylmaleimide
Pseudomonas straminea p-chloromercuribenzoate
Pseudomonas straminea Zn(NO3)2 inhibits hydrolysis reaction Pseudomonas straminea

KM Value [mM]

EC Number KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure 0.026
4-oxalmesaconate pH 6.5, 24°C Pseudomonas straminea 0.087
2-Pyrone-4,6-dicarboxylate pH 8.5, 24°C Pseudomonas straminea

Molecular Weight [Da]

EC Number Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism 33000
1 * 33000, SDS-PAGE Pseudomonas straminea 31000
gel filtration Pseudomonas straminea

Natural Substrates/ Products (Substrates)

EC Number Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac. 2-pyrone-4,6-dicarboxylate + H2O Pseudomonas straminea highly specific, various other lactones does not serve as substrates 4-carboxy-2-hydroxyhexa-2,4-dienedioate product isomerizes to 4-oxalmesaconate r


EC Number Organism UniProt Comment Textmining Pseudomonas straminea

Purification (Commentary)

EC Number Purification (Comment) Organism
Pseudomonas straminea

Specific Activity [micromol/min/mg]

EC Number Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism 247
purification of hydrolase activity Pseudomonas straminea

Storage Stability

EC Number Storage Stability Organism -20°C, purified enzyme can be stored for at least 2 months without appreciable loss in activity Pseudomonas straminea -20°C, 30% of the activity is lost on storage for 1 year Pseudomonas straminea

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac. additional information no hydrolysis of gamma-butyrolactone, gamma-valerolactone, epsilon-caprolactone, gamma-n-decalactone, D-glucorono-gamma-lactone, mevalonolactone, 2-pyrone-6-carboxylate, coumalic acid, isodehydracetic acid, 4-hydroxy-6-methyl-2-pyrone and 4-methoxy-6-methyl-2-H-pyran-2-one Pseudomonas straminea ?
? 2-pyrone-4,6-dicarboxylate + H2O highly specific Pseudomonas straminea 4-carboxy-2-hydroxyhexa-2,4-dienedioate product isomerizes to 4-oxalmesaconate r 2-pyrone-4,6-dicarboxylate + H2O highly specific, various other lactones does not serve as substrates Pseudomonas straminea 4-carboxy-2-hydroxyhexa-2,4-dienedioate product isomerizes to 4-oxalmesaconate r


EC Number Subunits Comment Organism monomer 1 * 33000, SDS-PAGE Pseudomonas straminea


EC Number Synonyms Comment Organism 2-pyrone-4,6-dicarboxylate hydrolase
Pseudomonas straminea

pH Optimum

EC Number pH Optimum Minimum pH Optimum Maximum Comment Organism 8.5
2-pyrone-4,6-dicarboxylate hydrolysis Pseudomonas straminea 6 7.5 2-pyrone-4,6-dicarboxylate synthesis Pseudomonas straminea

pI Value

EC Number Organism Comment pI Value Maximum pI Value Pseudomonas straminea isolelectric focusing at 6°C, LKB 8101 column pH 3.5-10.0