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Literature summary for 3.2.1.68 extracted from

  • Kitagawa, H.; Amemura, A.; Harada, T.
    Studies on the inhibition and molecular properties of crystalline Pseudomonas isoamylase (1975), Agric. Biol. Chem., 39, 989-994.
No PubMed abstract available

Crystallization (Commentary)

Crystallization (Comment) Organism
-
Pseudomonas amyloderamosa

Inhibitors

Inhibitors Comment Organism Structure
2,4-dinitrofluorobenzene
-
Pseudomonas amyloderamosa
2-Hydroxy-5-nitrobenzyl bromide
-
Pseudomonas amyloderamosa
Ag2+
-
Pseudomonas amyloderamosa
amylose
-
Pseudomonas amyloderamosa
cellobiose 10 mM, 0.4% amylose, relative activity 88% Pseudomonas amyloderamosa
corn amylose
-
Pseudomonas amyloderamosa
Cu2+ relative activity 78% Pseudomonas amyloderamosa
cyclomaltoheptaose 10 mM, 0.4% amylose, relative activity 93% Pseudomonas amyloderamosa
D-glucono-delta-lactone relative activity 87% Pseudomonas amyloderamosa
D-glucose 10 mM, 0.4% amylose, relative activity 95% Pseudomonas amyloderamosa
guanidine hydrochloride 3 M, activity completely lost Pseudomonas amyloderamosa
Hg2+
-
Pseudomonas amyloderamosa
Iodine relative activity 93% Pseudomonas amyloderamosa
iodoacetate
-
Pseudomonas amyloderamosa
isomaltose 10 mM, 0.4% amylose, relative activity 82% Pseudomonas amyloderamosa
maltose 10 mM, inhibition slightly, with 0.4% amylose relative activity 90% Pseudomonas amyloderamosa
maltotetraose 10 mM, 0.4% amylose, relative activity 50% Pseudomonas amyloderamosa
maltotriose 10 mM, 0.4% amylose, relative activity 53% Pseudomonas amyloderamosa
N-bromosuccinimide
-
Pseudomonas amyloderamosa
oligosaccharides with alpha-1,4-glucosidic linkages
-
Pseudomonas amyloderamosa
Phenylmercuriacetate
-
Pseudomonas amyloderamosa
SDS 0,1%, activity completely lost Pseudomonas amyloderamosa
Succinic anhydride relative activity 94% Pseudomonas amyloderamosa
Urea 20% activity retained Pseudomonas amyloderamosa
xylose 10 mM, 0.4% amylose, relative activity 97% Pseudomonas amyloderamosa

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
46000
-
2 * 46000, sedimentation equilibrium Pseudomonas amyloderamosa
50000
-
2 subunits, not linked covalently Pseudomonas amyloderamosa
94000
-
sedimentation equilibrium Pseudomonas amyloderamosa
94000
-
native enzyme, centrifugation analysis Pseudomonas amyloderamosa

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
starch + H2O Pseudomonas amyloderamosa
-
?
-
?

Organism

Organism UniProt Comment Textmining
Pseudomonas amyloderamosa
-
-
-

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
amylopectin + H2O or the beta-limit dextrins, cleaves the branching points completely in vitro Pseudomonas amyloderamosa maltose + maltooligosaccharides
-
?
glycogen + H2O cleaves the branching points completely in vitro Pseudomonas amyloderamosa maltose + maltooligosaccharides
-
?
glycogen + H2O or the beta-limit dextrins Pseudomonas amyloderamosa maltose + maltooligosaccharides
-
?
starch + H2O
-
Pseudomonas amyloderamosa ?
-
?

Subunits

Subunits Comment Organism
dimer 2 * 46000, sedimentation equilibrium Pseudomonas amyloderamosa
dimer 2 * 50000, not linked covalently Pseudomonas amyloderamosa