T9008
Trypsin inhibitor from Glycine max (soybean)
1% solution in water (contains no buffers)
Synonym(s):
SBTI
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About This Item
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biological source
Glycine max (soybean)
sterility
sterile-filtered
form
solution
mol wt
20,100 Da
technique(s)
inhibition assay: 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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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.
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 will produce a 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.
Preparation Note
Prepared From Type I-S
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.
Solutions can retain activity when stored short-term at 2-8° C. Solutions are stable in frozen aliquots at -20°C.
Analysis Note
Protein determined by biuret. One mg of trypsin inhibitor will inhibit 1.0-2.5 mg of trypsin of ~10000 BAEE units/mg trypsin.
Other Notes
View more information on Trypsin Inhibitor.
signalword
Danger
hcodes
Hazard Classifications
Resp. Sens. 1 - Skin Sens. 1
Storage Class
12 - Non Combustible Liquids
wgk_germany
WGK 2
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter
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