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T9777

Sigma-Aldrich

Trypsin-chymotrypsin inhibitor

lyophilized powder

Synonym(s):

Bowman-Birk Inhibitor

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About This Item

CAS Number:
37330-34-0
MDL number:
MFCD00132532
UNSPSC Code:
12352202
NACRES:
NA.77

product name

Trypsin-chymotrypsin inhibitor from Glycine max (soybean), lyophilized powder

biological source

Glycine max (soybean)

form

lyophilized powder

composition

Protein, 70-90% biuret

storage temp.

2-8°C

General description

Trypsin-chymotrypsin inhibitor belongs to the family of plant protease inhibitors. It is mainly found in the legume (Fabaceae) and cereal (Poaceae) families. Trypsin-chymotrypsin inhibitor consists of many internal disulfide bonds between conserved Cys residues, which maintains structural stability and active conformation of the inhibitory loops. Trypsin-chymotrypsin has anticarcinogenic properties.
Highly cross-linked with seven disulfide bridges, Bowman-Birk inhibitor has spatially distinct domains for trypsin and chymotrypsin inhibition.

Application

Bowman Birk protease inhibitor prevents radiation-induced carcinogenesis by a reduction of incorrect DNA repairs, resulting in a reduced amount of dicentric chromosomes.
Trypsin-chymotrypsin inhibitor from Glycine max (soybean) has been used for flow cytometric separase activity assay. It has also been used to inhibit trypsin and chymotrypsin for in vitro gastrointestinal (GI) digestion studies.

Unit Definition

One trypsin unit = ΔA253 of 0.001 per min with BAEE as substrate at pH 7.6 at 25 °C. Reaction volume = 3.2 mL (1 cm light path).

Physical form

Lyophilized powder containing phosphate buffer salts, pH 7.6

Analysis Note

1 mg protein will inhibit ≥0.5 mg trypsin with activity of ~10,000 BAEE units per mg protein or ≥1.0 mg chymotrypsin with activity of ~40 BTEE units per mg protein.

Other Notes

View more information on Trypsin Inhibitor.

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

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Evidence for ancient origins of Bowman-Birk inhibitors from Selaginella moellendorffii
James AM, et al.
Plant Cell, 29(3), 461-473 (2017)
Yu Liu et al.
Viruses, 10(10) (2018-10-17)
The Bowman‒Birk inhibitor (BBI), a protease inhibitor derived from soybeans, has been extensively studied in anti-tumor and anti-inflammation research. We recently reported that BBI has an anti-HIV-1 property in primary human macrophages. Because HSV-2 infection plays a role in facilitating
The Bowman-Birk inhibitor from soybeans as an anticarcinogenic agent
Kennedy AR
American Journal of Clinical Nutrition, 68(6), 1406S-1412S (1998)
Epitopes resistance to the simulated gastrointestinal digestion of beta-lactoglobulin submitted to two-step enzymatic modification
Villas-Boas M, et al.
Food Research International, 72, 191-197 (2015)
Increased separase activity and occurrence of centrosome aberrations concur with transformation of MDS
Ruppenthal S, et al.
PLoS ONE, 13(1), e0191734-e0191734 (2018)
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