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Safety Information

T4528

Sigma-Aldrich

Thioglucosidase from Sinapis alba (white mustard) seed

≥100 units/g solid

Synonym(s):

Glucosinolase, Myrosinase, Thioglucoside glucohydrolase

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About This Item

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

biological source

plant seeds (Sinapis alba)

Quality Level

form

solid

specific activity

≥100 units/g solid

storage temp.

−20°C

General description

Thioglucosidase, also called as myrosinase, is present in the myrosin cells that do not contain glucosinolates. This enzyme is obtained from several plant sources, such as Lepidium sativum, L. Sinapis alba and Brassica napus.

Application

Thioglucosidase from Sinapis alba (white mustard) seeds has been used as a standard to quantify myrosinase activity and in column glucosinolate analysis of plant samples.
Thioglucosidase has been used in a study to assess Brassica species screening for glucosinolate content. Thioglucosidase has also been used in a study to investigate a negative regulatory role for auxin in sulphate deficiency response in Arabidopsis thaliana.

Biochem/physiol Actions

Myrosinases are present in many bacteria, fungi, and edible plants, including those of the Brassicaceae (Cruciferae) family. The enzyme hydrolyzes the S-glucosidic bond of a glucosinolate substrate to form an unstable aglycone that rearranges with the loss of sulfate primarily to the isothiocyanate, though thiocyanates and nitriles are also formed. Many of the isothiocyanate products of aliphatic and aromatic glucosinolates have cancer chemopreventive properties.
Thioglucosidase research has focused mainly on the cruciferous crops due to their economic importance and cancer preventive benefits.

Unit Definition

One unit will produce 1.0 μmole glucose per min from sinigrin at pH 6.0 at 25 °C.

Pictograms

Health hazard

Signal Word

Danger

Hazard Statements

Precautionary Statements

Hazard Classifications

Resp. Sens. 1

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Information

动植物源性产品

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Niels Agerbirk et al.
Phytochemistry, 153, 79-93 (2018-06-11)
Glucosinolates are found in plants of the order Brassicales and hydrolyzed to different breakdown products, particularly after tissue damage. In Barbarea vulgaris R.Br. (Brassicaceae), the dominant glucosinolate in the investigated "G-type" is glucobarbarin, (S)-2-hydroxy-2-phenylethylglucosinolate. Formation of the nitrile from glucobarbarin
Chimgee Baasanjav-Gerber et al.
Molecular nutrition & food research, 55(5), 783-792 (2011-01-08)
Juices from Brassicales are mutagenic in Salmonella typhimurium and characteristic adducts are formed with the endogenous DNA in Brassicales homogenates. These effects require myrosinase activity, suggesting an involvement of breakdown products of glucosinolates (GLs). We aimed to identify GLs congeners
Han Nong et al.
Journal of integrative plant biology, 52(10), 879-890 (2010-10-05)
Plant thioglucosidases are the only known S-glycosidases in the large superfamily of glycosidases. These enzymes evolved more recently and are distributed mainly in Brassicales. Thioglucosidase research has focused mainly on the cruciferous crops due to their economic importance and cancer
Studies on the mechanism of myrosinase investigation of the effect of glycosyl acceptors on enzyme activity
Botti MG, et al.
The Journal of Biological Chemistry, 270(35), 20530-20535 (1995)
Patricia A Egner et al.
Cancer prevention research (Philadelphia, Pa.), 4(3), 384-395 (2011-03-05)
One of several challenges in design of clinical chemoprevention trials is the selection of the dose, formulation, and dose schedule of the intervention agent. Therefore, a cross-over clinical trial was undertaken to compare the bioavailability and tolerability of sulforaphane from

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