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Key Documents

T9767

Sigma-Aldrich

Trypsin inhibitor

powder, suitable for electrophoresis

Sinónimos:

SBTI

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About This Item

Número de CAS:
EC Number:
MDL number:
UNSPSC Code:
12352200
NACRES:
NA.77

product name

Trypsin inhibitor from Glycine max (soybean), For use as a marker in SDS-PAGE, BioReagent

biological source

Glycine max (soybean)

Quality Level

product line

BioReagent

form

powder

mol wt

20,000 Da

packaging

vial of 5 mg

technique(s)

electrophoresis: suitable

solubility

balanced salt solution: 1 mg/mL
concentrate: >10 mg/mL, hazy, amber-yellow
phosphate buffer: 10 mg/mL
water: 10 mg/mL
serum-free medium: soluble

shipped in

ambient

storage temp.

2-8°C

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Application

Trypsin inhibitor from Glycine max (soybean) has been used as a standard molecular weight marker in electrophoresis.

Biochem/physiol Actions

This inhibitor acts against trypsin, and chymotrypsin and plasmin to a lesser extent. It will also inhibit proteases with mechanisms similar to trypsin, plasma kallikrein and coagulation Factor X. The trypsin inhibitor will not act against metalloproteases, tissue-baseed kallikrein, acid proteases, or thio proteases. This inhibitor acts by forming a 1:1 stoichiometric complex with the protease active site, and then cleaving a single arginine-isoleucine bond on the inhibitor. The inhibition is both reversible and pH dependent.

Components

The soybean trypsin inhibitor is a monomeric protein containing 181 amino acid residues in a single polypeptide chain crosslinked by two disulfide bridges.

Unit Definition

One trypsin unit = A253 of 0.001 per minute with N-alpha-benzoyl-L-arginine ethyl ester (BAEE) as substrate at pH 7.6 at 25 °C.
One trypsin unit = A253 of 0.001 per minute with N-alpha-benzoyl-L-arginine ethyl ester (BAEE) as substrate at pH 7.6 at 25 °C.

Preparation Note

The trypsin inhibitor is soluble in water and phosphate buffers at 10 mg/mL. It is soluble in balanced salt solutions at 1 mg/mL and in serum-free media. Concentrated solutions greater than 10 mg/mL may be hazy and have a yellow to amber color. After trypsinizing cells, resuspend in 1 mL trypsin inhibitor solution at 1 mg/mL for every mL of trypsin solution used for dissociation. The cell suspension should then be centrifuged at 1000 rpm, forming a cell pellet.

Solutions can retain activity when stored short-term at 2-8° C. Solutions are stable in frozen aliquots at -20°C.

Application

Referencia del producto
Descripción
Precios

Related product

Referencia del producto
Descripción
Precios

pictograms

Health hazard

signalword

Danger

Hazard Classifications

Resp. Sens. 1 - Skin Sens. 1

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)


Certificados de análisis (COA)

Busque Certificados de análisis (COA) introduciendo el número de lote del producto. Los números de lote se encuentran en la etiqueta del producto después de las palabras «Lot» o «Batch»

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Artículos

For use as a marker in SDS-PAGE; Albumin from chicken egg white, For use as a marker in SDS-PAGE; L-Lactic Dehydrogenase from rabbit muscle, Type XI, lyophilized powder, 600-1,200 units/mg protein

Protocolos

Natural trypsin inhibitors (serpins) regulate protein activation and catabolism by inhibiting serine proteases in vivo.

Natural trypsin inhibitors (serpins) regulate protein activation and catabolism by inhibiting serine proteases in vivo.

Natural trypsin inhibitors (serpins) regulate protein activation and catabolism by inhibiting serine proteases in vivo.

Natural trypsin inhibitors (serpins) regulate protein activation and catabolism by inhibiting serine proteases in vivo.

Chromatograms

application for HPLC

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