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Key Documents

Safety Information

08124

Sigma-Aldrich

Isoamylase from Pseudomonas sp.

ammonium sulfate suspension, ≥10,000,000 units/mg protein

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About This Item

Enzyme Commission number:
MDL number:
UNSPSC Code:
12352204
NACRES:
NA.54

form

ammonium sulfate suspension

Quality Level

specific activity

≥10,000,000 units/mg protein

storage temp.

2-8°C

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Application

Isoamylase from Pseudomonas sp. has been used in starch debranching and to measure the chain-length distributions.

Biochem/physiol Actions

Pseudomonas amyloderamosa is considered a popular source of isoamylase. In the presence of a surfactant, this isoamylase produces a series of maltooligosaccharides. Immobilized isoamylase makes it applicable with a polysaccharide matrix composed of agarose, cellulose, and raw corn starch.
Catalyzes the hydrolysis of (1-6)-α-D-glucosidic branch linkages in glycogen, amylopectin and their β-limit dextrins.

Unit Definition

One unit causes an increase in A610 of 0.1 in 1 hour using a homogenized solution of rice starch as a substrate (pH 3.5, 40°C)

Analysis Note

≥10 MU/mg protein

Pictograms

Skull and crossbonesEnvironment

Signal Word

Danger

Hazard Statements

Hazard Classifications

Acute Tox. 3 Dermal - Acute Tox. 4 Inhalation - Acute Tox. 4 Oral - Aquatic Chronic 2

Storage Class Code

6.1D - Non-combustible acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects

WGK

WGK 2

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Regulatory Information

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Enzymatic conversions of starch
Tomasik P and Horton D
Advances in Carbohydrate Chemistry and Biochemistry, 68, 59-436 (2012)
Digestion properties of corn starch modified by $\alpha$-D-glucan branching enzyme and cyclodextrin glycosyltransferase
Li Y, et al.
Food Hydrocolloids, 89, 534-541 (2019)
Lucio Gullo et al.
Pancreas, 38(4), 396-400 (2009-03-20)
To determine the type and frequency of pancreatic lesions detected by magnetic resonance cholangiopancreatography (MRCP) in subjects with asymptomatic pancreatic hyperenzymemia and to assess for a possible relationship between these lesions and the hyperenzymemia. From January 2005 to May 2008
Rupendra Mukerjea et al.
Carbohydrate research, 345(3), 449-451 (2009-12-26)
Amylose, a putative linear alpha-(1-->4)-glucan and a component of most starches, was isolated from potato, rice, and wheat starches by forming the 1-butanol complex in a solution of the starches. It previously had been found that these amyloses were incompletely
Hiroki Takata et al.
Carbohydrate research, 344(5), 654-659 (2009-02-17)
Glycogen, highly branched (1-->4)(1-->6)-linked alpha-d-glucan, can be extracted from natural sources such as animal tissues or shellfish (natural source glycogen, NSG). Glycogen can also be synthesized in vitro from glucose-1-phosphate using the cooperative action of alpha-glucan phosphorylase (GP, EC 2.4.1.1)

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