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Literature summary for 3.2.1.33 extracted from

  • Ryman, B.E.; Whelan, W.J.
    New aspects of glycogen metabolism (1971), Adv. Enzymol. Relat. Areas Mol. Biol., 34, 285-443.
    View publication on PubMed

Inhibitors

Inhibitors Comment Organism Structure
Amine
-
Oryctolagus cuniculus
p-hydroxymercuribenzoate
-
Oryctolagus cuniculus
phosphate buffer, inhibits at neutral pH Oryctolagus cuniculus
Tris
-
Oryctolagus cuniculus
Urea
-
Oryctolagus cuniculus

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
267000 279000
-
Oryctolagus cuniculus
280000
-
-
Saccharomyces cerevisiae
280000
-
glycogen debranching enzyme, sedimentation equilibrium Saccharomyces cerevisiae

Organism

Organism UniProt Comment Textmining
Mammalia
-
generally present in mammalian tissues
-
Oryctolagus cuniculus
-
-
-
Saccharomyces cerevisiae
-
-
-
Saccharomyces cerevisiae
-
baker's yeast
-

Source Tissue

Source Tissue Comment Organism Textmining
liver
-
Mammalia
-
liver
-
Oryctolagus cuniculus
-
muscle
-
Mammalia
-
muscle
-
Oryctolagus cuniculus
-

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
63-alpha-glucosyl maltotetraose + H2O
-
Mammalia maltotetraose + D-glucose
-
r
63-alpha-glucosyl maltotetraose + H2O
-
Oryctolagus cuniculus maltotetraose + D-glucose
-
r
alpha-(1-6)-glucosyl cyclohexaamylose + H2O 6-alpha-glucosyl alpha-Schardinger dextrin, cyclodextrin Mammalia cyclohexaamylose + D-glucose
-
r
alpha-(1-6)-glucosyl cyclohexaamylose + H2O 6-alpha-glucosyl alpha-Schardinger dextrin, cyclodextrin Saccharomyces cerevisiae cyclohexaamylose + D-glucose
-
r
alpha-(1-6)-glucosyl cyclohexaamylose + H2O 6-alpha-glucosyl alpha-Schardinger dextrin, cyclodextrin Oryctolagus cuniculus cyclohexaamylose + D-glucose
-
r
amylopectin + H2O
-
Mammalia amylopectin + D-glucose
-
?
amylopectin + H2O
-
Saccharomyces cerevisiae amylopectin + D-glucose
-
?
amylopectin + H2O
-
Oryctolagus cuniculus amylopectin + D-glucose
-
?
glycogen + H2O reverse reaction: incorporation of glucose into glycogen Mammalia glycogen + D-glucose
-
r
glycogen + H2O reverse reaction: incorporation of glucose into glycogen Saccharomyces cerevisiae glycogen + D-glucose
-
r
glycogen + H2O reverse reaction: incorporation of glucose into glycogen Oryctolagus cuniculus glycogen + D-glucose
-
r
glycogen + H2O slight reversibility Oryctolagus cuniculus glycogen + D-glucose
-
r
glycogen phosphorylase-limit dextrin + H2O
-
Saccharomyces cerevisiae limit dextrin + D-glucose
-
r
glycogen phosphorylase-limit dextrin + H2O phi-dextrin Mammalia limit dextrin + D-glucose
-
r
glycogen phosphorylase-limit dextrin + H2O phi-dextrin Saccharomyces cerevisiae limit dextrin + D-glucose
-
r
glycogen phosphorylase-limit dextrin + H2O phi-dextrin Oryctolagus cuniculus limit dextrin + D-glucose
-
r

Subunits

Subunits Comment Organism
trimer
-
Saccharomyces cerevisiae

Synonyms

Synonyms Comment Organism
amyloglucosidase
-
Mammalia
amyloglucosidase
-
Saccharomyces cerevisiae
amyloglucosidase
-
Oryctolagus cuniculus
glycogen debranching system EC 3.2.1.33 found in mammals and yeast is in a single polypeptide chain containing two active centres. The other activity is similar to that of EC 2.4.1.25, 4-alpha-glucanotransferase, which acts on the glycogen phosphorylase limit dextrin chains to expose the single glucose residues, which the 6-alpha-glucosidase activity can hydrolyse. Together, these two activities constitute the glycogen debranching system Mammalia
glycogen debranching system EC 3.2.1.33 found in mammals and yeast is in a single polypeptide chain containing two active centres. The other activity is similar to that of EC 2.4.1.25, 4-alpha-glucanotransferase, which acts on the glycogen phosphorylase limit dextrin chains to expose the single glucose residues, which the 6-alpha-glucosidase activity can hydrolyse. Together, these two activities constitute the glycogen debranching system Saccharomyces cerevisiae
glycogen debranching system EC 3.2.1.33 found in mammals and yeast is in a single polypeptide chain containing two active centres. The other activity is similar to that of EC 2.4.1.25, 4-alpha-glucanotransferase, which acts on the glycogen phosphorylase limit dextrin chains to expose the single glucose residues, which the 6-alpha-glucosidase activity can hydrolyse. Together, these two activities constitute the glycogen debranching system Oryctolagus cuniculus

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
additional information
-
pH-optimum depends on type of buffer Oryctolagus cuniculus
additional information
-
2 enzymes: one with an acid and one with a neutral pH-optimum Oryctolagus cuniculus
6
-
substrate: glycogen phosphorylase limit dextrin, citrate /phosphate buffer Oryctolagus cuniculus
6 6.6
-
Saccharomyces cerevisiae
6.6
-
-
Oryctolagus cuniculus
7.2
-
-
Oryctolagus cuniculus
7.6
-
citrate buffer Oryctolagus cuniculus