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Literature summary for 2.4.1.178 extracted from

  • Hösel, W.; Schiel, O.
    Biosynthesis of cyanogenic glucosides: in vitro analysis of the glucosylation step (1984), Arch. Biochem. Biophys., 229, 177-186.
    View publication on PubMed

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.5
-
UDP-glucose 4-hydroxymandelonitrile or 3,4-dihydroxymandelonitrile Triglochin maritima

Localization

Localization Comment Organism GeneOntology No. Textmining
soluble
-
Triglochin maritima
-
-

Metals/Ions

Metals/Ions Comment Organism Structure
High salt concentrations 160% activity observed at 0.6 M concentration of NaCl, KCl or ammonium sulfate with 4-hydroxymandelonitrile, and 20% activity observed at 0.1-0.2 M concentration with 3,4-dihydroxymandelonitrile Triglochin maritima

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
47000
-
1 * 47000, SDS-PAGE Triglochin maritima
50000
-
gel filtration Triglochin maritima

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
UDP-glucose + 4-hydroxymandelonitrile Triglochin maritima last step in biosynthesis of cyanogenic glucosides UDP + taxiphyllin
-
?

Organism

Organism UniProt Comment Textmining
Triglochin maritima
-
-
-

Purification (Commentary)

Purification (Comment) Organism
method that includes chromatography on Sephadex PD10 and DEAE-Sephadex Triglochin maritima

Source Tissue

Source Tissue Comment Organism Textmining
seedling
-
Triglochin maritima
-

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
0.31
-
3,4-dihydroxymandelonitrile Triglochin maritima
0.94
-
4-hydroxymandelonitrile Triglochin maritima

Storage Stability

Storage Stability Organism
-20°C, 10% glycerol, crude extract stable for several weeks Triglochin maritima

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
UDP-glucose + 3,4-dihydroxymandelonitrile
-
Triglochin maritima UDP + 3,4-dihydroxymandelonitrile glucoside
-
?
UDP-glucose + 4-hydroxymandelonitrile
-
Triglochin maritima UDP + taxiphyllin
-
?
UDP-glucose + 4-hydroxymandelonitrile last step in biosynthesis of cyanogenic glucosides Triglochin maritima UDP + taxiphyllin
-
?

Subunits

Subunits Comment Organism
monomer 1 * 47000, SDS-PAGE Triglochin maritima

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
30
-
-
Triglochin maritima

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
6.5 8.5
-
Triglochin maritima
8
-
assay at Triglochin maritima

pH Range

pH Minimum pH Maximum Comment Organism
6 9.5 about 50% of activity maximum at pH 6 and pH 9.5 Triglochin maritima

pH Stability

pH Stability pH Stability Maximum Comment Organism
7.5
-
unstable below, crude enzyme extract Triglochin maritima