T0256
Trypsin inhibitor from bovine pancreas
Type I-P, essentially salt-free, lyophilized powder
Synonym(s):
BPTI
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About This Item
biological source
bovine pancreas
type
Type I-P
form
essentially salt-free, lyophilized powder
mol wt
~6500 Da (single-chain 58-amino acid peptide)
purified by
crystallization
technique(s)
inhibition assay: suitable
solubility
water: 10 g/L
storage temp.
−20°C
Biochem/physiol Actions
A 58-residue protein whose binding to various serine proteases has been extensively studied. It is highly homologous to a family of mamba snake dendrotoxin proteins that inhibit various K+ channels. It also binds to an intracellular site associated with the large conductance Ca2+-activated K+ channel..
Unit Definition
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 by method of Kunitz and Northrup, J. Gen. Physiol., 19, 991 (1936).
Analysis Note
One mg of trypsin inhibitor will inhibit greater than 1.5 mg of trypsin with activity of approximately 10,000 BAEE units per mg protein.
Protein determined by biuret.
Other Notes
View more information on Trypsin Inhibitor.
Signal Word
Danger
Hazard Statements
Precautionary Statements
Hazard Classifications
Resp. Sens. 1 - Skin Sens. 1
WGK
WGK 3
Personal Protective Equipment
dust mask type N95 (US), Eyeshields, Gloves
Regulatory Information
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Alexandre P Alloy et al.
The Journal of biological chemistry, 290(35), 21523-21535 (2015-07-16)
Human mesotrypsin is highly homologous to other mammalian trypsins, and yet it is functionally unique in possessing resistance to inhibition by canonical serine protease inhibitors and in cleaving these inhibitors as preferred substrates. Arg-193 and Ser-39 have been identified as
Fanlu Meng et al.
Journal of plant research, 131(5), 827-837 (2018-05-08)
PeaT1 is a proteinaceous elicitor from fungal pathogen Alternaria tenuissima. Our previous research revealed that this elicitor could induce defense response and enhance disease resistance in various plants including Nicotiana plants. However, immune activation mechanisms whereby PeaT1 elicits defense response
J N Whitaker et al.
The Biochemical journal, 201(3), 543-553 (1982-03-01)
Previous studies have demonstrated that the kidney is the major site for clearance and catabolism of a peptide (residues 43-88) of encephalitogenic or basic protein (BP) derived from central-nervous-system myelin. In the present investigation rat renal tissue was shown to
Martina Holubová et al.
The Journal of pharmacology and experimental therapeutics, 366(3), 422-432 (2018-06-20)
Ghrelin, the only known orexigenic gut hormone produced primarily in the stomach, has lately gained attention as a potential treatment of anorexia and cachexia. However, its biologic stability is highly limited; therefore, a number of both peptide and nonpeptide ghrelin
I B Svendsen et al.
Carlsberg research communications, 54(6), 231-239 (1989-01-01)
A trypsin inhibitor with a Km of 5 x 10(-5) M has been isolated from kohlrabi (Brassica napus var. rapifera). Subtilisin DY is inhibited only weakly and chymotrypsin not at all. The inhibitor is closely related to napin as determined
Chromatograms
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