93620

Trypsin inhibitor from Glycine max (soybean)

lyophilized powder, ~10000 U/mg

• Sinónimos: SBTI
• Número de CAS: 9035-81-8
• Número CE: 232-906-9
• Número MDL: MFCD00082103
• Código UNSPSC: 12352202
• NACRES: NA.77

Propiedades

• origen biológico: Glycine max (soybean)
• Nivel de calidad: 100
• Formulario: lyophilized powder
• actividad específica: ~10000 U/mg
• mol peso: M_r ~20000
• solubilidad: 0.1 M phosphate pH 7.6: 5 mg/mL, clear, colorless to almost colorless
• Condiciones de envío: wet ice
• temp. de almacenamiento: −20°C

Descripción

Acciones bioquímicas o fisiológicas

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.

Definición de unidad

1 U corresponds to the amount of inhibitor which reduces the trypsin activity by 1 BAEE-U. (1 BAEE-U is the amount of enzyme which increases the absorbance at 253 nm by 0.001 per minute at pH 7.6 and 25 °C; BAEE, Cat. No. 12880, as substrate).

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.

Nota de preparación

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.

Otras notas

For the inhibition of proteolytic activity; Use in affinity chromatography for the purification of trypsin; Prepared by the method of M. Kunitz.

Información de seguridad

• Pictogramas: GHS08
• Palabra de señalización: Danger
• Frases de peligro: H317,H334
• Consejos de prudencia: P261 - P272 - P280 - P284 - P302 + P352 - P333 + P313
• Clasificaciones de peligro: Resp. Sens. 1 - Skin Sens. 1
• Código de clase de almacenamiento: 11 - Combustible Solids
• Clase de riesgo para el agua (WGK): WGK 3
• Punto de inflamabilidad (°F): Not applicable
• Punto de inflamabilidad (°C): Not applicable
• Equipo de protección personal: Eyeshields, Gloves, type N95 (US)