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Merck
CN

08124

Isoamylase from Pseudomonas sp.

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

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About This Item

UNSPSC Code:
12352204
NACRES:
NA.54
EC Number:
MDL number:
Specific activity:
≥10,000,000 units/mg protein
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form

ammonium sulfate suspension

Quality Level

specific activity

≥10,000,000 units/mg protein

storage temp.

2-8°C

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.

Analysis Note

≥10 MU/mg protein

Other Notes

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)

pictograms

Skull and crossbonesEnvironment

signalword

Danger

Hazard Classifications

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

Storage Class

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

常规特殊物品

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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)
Enzymatic conversions of starch
Tomasik P and Horton D
Advances in Carbohydrate Chemistry and Biochemistry, 68, 59-436 (2012)
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
Sebastian Streb et al.
The Plant cell, 20(12), 3448-3466 (2008-12-17)
Several studies have suggested that debranching enzymes (DBEs) are involved in the biosynthesis of amylopectin, the major constituent of starch granules. Our systematic analysis of all DBE mutants of Arabidopsis thaliana demonstrates that when any DBE activity remains, starch granules
In vitro amylase hydrolysis of amylopectins from cereal starches based on molecular structure of amylopectins
Guo Li
Food Hydrocolloids, 77, 238-247 (2018)

Global Trade Item Number

SKUGTIN
127442-50G04061838724892
08124-5MU04061838652126

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