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Literature summary for 5.1.3.37 extracted from

  • Skjak-Braek, G.; Larsen, B.
    Biosynthesis of alginate: Purification and characterisation of mannuronan C-5-epimerase from Azotobacter vinelandii (1985), Carbohydr. Res., 139, 273-283.
No PubMed abstract available

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.62
-
[mannuronan]-beta-D-mannuronate pH 6.8, 30°C, presence of 8.6 mM Ca2+ Azotobacter vinelandii
0.9
-
[mannuronan]-beta-D-mannuronate pH 6.8, 30°C, presence of 0.68 mM Ca2+ Azotobacter vinelandii

Metals/Ions

Metals/Ions Comment Organism Structure
Ca2+ absolutely required, optimum concentration 1 mM Azotobacter vinelandii

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
120000
-
1 * 120000, SDS-PAGE Azotobacter vinelandii
122000
-
PAGE Azotobacter vinelandii
150000
-
gel filtration Azotobacter vinelandii

Organism

Organism UniProt Comment Textmining
Azotobacter vinelandii
-
-
-

Purification (Commentary)

Purification (Comment) Organism
rapid purification procedure based on fast protein liquid chromatography on MonoQ resin Azotobacter vinelandii

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
[mannuronan]-beta-D-mannuronate
-
Azotobacter vinelandii [alginate]-alpha-L-guluronate very efficient conversion of poly(mannuronic acid) into a polymer containing 42% of guluronic acid ?

Subunits

Subunits Comment Organism
monomer 1 * 120000, SDS-PAGE Azotobacter vinelandii

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
7
-
-
Azotobacter vinelandii

pI Value

Organism Comment pI Value Maximum pI Value
Azotobacter vinelandii isoelectric focusing
-
4.5