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Literature summary for 4.1.2.46 extracted from

  • Xu, L.L.; Singh, B.K.; Conn, E.E.
    Purification and characterization of acetone cyanohydrin lyase from Linum usitatissimum (1988), Arch. Biochem. Biophys., 263, 256-263.
    View publication on PubMed

Inhibitors

Inhibitors Comment Organism Structure
additional information no inhibition by 10 mM 2-mercaptoethanol, 1 mM iodoacetamide or iodoacetic acid, 10 mM isobutyronitrile or isopropanol Linum usitatissimum

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
1.25
-
(2R)-2-hydroxy-2-methylbutanenitrile pH 5.5, 25°C Linum usitatissimum
2.5
-
2-hydroxy-2-methylpropanenitrile pH 5.5, 25°C Linum usitatissimum

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
42000
-
2 * 42000, SDS-PAGE Linum usitatissimum
82000
-
gel filtration Linum usitatissimum

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
2-hydroxy-2-methylpropanenitrile Linum usitatissimum i.e. acetone cyanohydrin cyanide + acetone
-
?

Organism

Organism UniProt Comment Textmining
Linum usitatissimum
-
-
-

Purification (Commentary)

Purification (Comment) Organism
-
Linum usitatissimum

Source Tissue

Source Tissue Comment Organism Textmining
shoot
-
Linum usitatissimum
-

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
34.1
-
-
Linum usitatissimum

Storage Stability

Storage Stability Organism
4°C, stable for at least 45 d Linum usitatissimum

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
(2R)-2-hydroxy-2-methylbutanenitrile
-
Linum usitatissimum cyanide + 2-butanone
-
?
2-hydroxy-2-methylpropanenitrile i.e. acetone cyanohydrin Linum usitatissimum cyanide + acetone
-
?
additional information no activity towards mandelonitrile and p-hydroxymandelonitrile Linum usitatissimum ?
-
?

Subunits

Subunits Comment Organism
dimer 2 * 42000, SDS-PAGE Linum usitatissimum

Synonyms

Synonyms Comment Organism
Acetone cyanohydrin lyase
-
Linum usitatissimum

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
5.5
-
-
Linum usitatissimum

Cofactor

Cofactor Comment Organism Structure
additional information not a flavoprotein Linum usitatissimum

pI Value

Organism Comment pI Value Maximum pI Value
Linum usitatissimum chromatofocusing 4.8 4.5