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Literature summary for 5.4.99.11 extracted from

  • Cheetham, P.S.J.
    The extraction and mechanism of a novel isomaltulose-synthesizing enzyme from Erwinia rhapontici (1982), Biochem. J., 220, 213-220.
    View publication on PubMedView publication on EuropePMC
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Localization

Localization Comment Organism GeneOntology No. Textmining
periplasm
-
 Erwinia rhapontici
-
-

Organism

Organism UniProt Comment Textmining
Erwinia rhapontici
-
-
-

Reaction

Reaction Comment Organism Reaction ID
Sucrose = 6-O-alpha-D-glucopyranosyl-D-fructofuranose intramolecular transglycosylation mechanism in which both glucose and fructose residues appear to be enzyme-bound Erwinia rhapontici
a

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
280
-
 sucrose Erwinia rhapontici

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
sucrose ir Erwinia rhapontici 6-O-alpha-D-Glucopyranosyl-D-fructofuranose i.e. isomaltulose, i.e. palatinose , formation of isomaltulose and a second alpha-1,1-linked disaccharide, trehalulose, by hydrolysis of sucrose followed by reaction of glucose with the C-6 and C-1 positions of the fructofuranose respectively ?
sucrose the enzyme is sucrose-specific Erwinia rhapontici 6-O-alpha-D-Glucopyranosyl-D-fructofuranose i.e. isomaltulose, i.e. palatinose , formation of isomaltulose and a second alpha-1,1-linked disaccharide, trehalulose, by hydrolysis of sucrose followed by reaction of glucose with the C-6 and C-1 positions of the fructofuranose respectively ?