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Literature summary for 3.2.1.20 extracted from

  • Quezada-Calvillo, R.; Robayo-Torres, C.C.; Ao, Z.; Hamaker, B.R.; Quaroni, A.; Brayer, G.D.; Sterchi, E.E.; Baker, S.S.; Nichols, B.L.
    Luminal substrate 'brake' on mucosal maltase-glucoamylase activity regulates total rate of starch digestion to glucose (2007), J. Pediatr. Gastroenterol. Nutr., 45, 32-43.
    View publication on PubMed

Inhibitors

Inhibitors Comment Organism Structure
additional information short glucose oligomers from sucrase-isomaltase digested starch, substrate inhibition at high concentrations Homo sapiens

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
additional information
-
additional information 0.4 mM for short glucose oligomers Homo sapiens
2.7
-
maltose 37°C Homo sapiens

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
1,4-alpha-D-glucooligosaccharide + H2O Homo sapiens short glucose oligomers, substrate derived from starch by alpha-amylase activity, the enzyme is important in mucosal alpha-glucogenesis, MGAM primes and mucosal sucrase-isomaltase activity sustains and constrains prandial alpha-glucogenesis from starch oligomers, regulation mechanism, overview alpha-D-glucose
-
?

Organism

Organism UniProt Comment Textmining
Homo sapiens
-
-
-

Source Tissue

Source Tissue Comment Organism Textmining
intestinal mucosa
-
Homo sapiens
-
pancreas
-
Homo sapiens
-

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
1,4-alpha-D-glucooligosaccharide + H2O short glucose oligomers, substrate derived from starch by alpha-amylase activity, the enzyme is important in mucosal alpha-glucogenesis, MGAM primes and mucosal sucrase-isomaltase activity sustains and constrains prandial alpha-glucogenesis from starch oligomers, regulation mechanism, overview Homo sapiens alpha-D-glucose
-
?
1,4-alpha-D-glucooligosaccharide + H2O short glucose oligomers, substrate derived from starch Homo sapiens alpha-D-glucose
-
?
maltose + H2O
-
Homo sapiens alpha-D-glucose + D-glucose
-
?
additional information substrate specificity, overview Homo sapiens ?
-
?

Synonyms

Synonyms Comment Organism
maltase-glucoamylase
-
Homo sapiens
MGAM
-
Homo sapiens

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
37
-
assay at Homo sapiens

Ki Value [mM]

Ki Value [mM] Ki Value maximum [mM] Inhibitor Comment Organism Structure
additional information
-
additional information 9.8 mM for short glucose oligomers Homo sapiens