产品名称
胰蛋白酶抑制剂 来源于大豆, Isoelectric focusing marker, pI 4.6
biological source
Glycine max (soybean)
Quality Level
form
powder
mol wt
20,100 Da
technique(s)
isoelectric focusing (IEF): suitable
pI
4.6
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.
−20°C
Biochem/physiol Actions
该抑制剂能够在较小程度上抑制胰蛋白酶、胰凝乳蛋白酶和纤溶酶。它还能抑制蛋白酶血浆激肽释放酶和凝血因子X，机制与抑制胰蛋白酶类似。胰蛋白酶抑制剂不会抑制金属蛋白酶、基于组织的激肽释放酶、酸性蛋白酶或硫代蛋白酶。该抑制剂通过与蛋白酶活性位点按1:1化学计量形成复合物，然后在抑制剂上切割单个精氨酸-异亮氨酸键。抑制作用是可逆的且具有pH依赖性。
Preparation Note
胰蛋白酶抑制剂能够以10 mg/mL溶于水和磷酸盐缓冲液。它能够以1 mg/mL溶于平衡盐溶液和无血清培养基中。浓度大于10 mg/mL的浓缩液可能浑浊，呈黄色至琥珀色。使用胰蛋白酶消化细胞后，重悬于胰蛋白酶抑制剂溶液中，使得用于解离的胰蛋白酶溶液浓度达到1 mg/mL。然后将细胞悬浮液以1000rpm离心，得到细胞沉淀。
在2-8℃下短期储存时，溶液可保持活性。溶液分装后可在-20℃冷冻并保持稳定。
在2-8℃下短期储存时，溶液可保持活性。溶液分装后可在-20℃冷冻并保持稳定。
Other Notes
一个胰蛋白酶单位是指在25°C、pH 7.6条件下，以N-α-苯甲酰基-L-精氨酸乙酯（BAEE）为底物，每分钟产生0.001的 A253所需的酶量。
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.
The soybean trypsin inhibitor is a monomeric protein containing 181 amino acid residues in a single polypeptide chain crosslinked by two disulfide bridges.
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法规信息
低风险生物材料
此项目有
实验方案
天然胰蛋白酶抑制剂也称为丝氨酸蛋白酶抑制剂（serpins），是最大和最多样化的蛋白酶抑制剂家族。Serpins通过抑制体内丝氨酸蛋白酶来控制蛋白质的活化和分解代谢。
Natural trypsin inhibitors (serpins) regulate protein activation and catabolism by inhibiting serine proteases in vivo.
James Shorter et al.
The EMBO journal, 27(20), 2712-2724 (2008-10-04)
Self-templating amyloid forms of Sup35 constitute the yeast prion [PSI(+)]. How the protein-remodelling factor, Hsp104, collaborates with other chaperones to regulate [PSI(+)] inheritance remains poorly delineated. Here, we report how the Ssa and Ssb components of the Hsp70 chaperone system
Kine Gregersen et al.
International journal of general medicine, 4, 555-560 (2011-09-03)
Food hypersensitivity is commonly suspected, but seldom verified. Patients with subjective food hypersensitivity suffer from both intestinal and extraintestinal health complaints. Abnormalities of the enterochromaffin cells may play a role in the pathogenesis. The aim of this study was to
Astrid F Nottebaum et al.
The Journal of experimental medicine, 205(12), 2929-2945 (2008-11-19)
We have shown recently that vascular endothelial protein tyrosine phosphatase (VE-PTP), an endothelial-specific membrane protein, associates with vascular endothelial (VE)-cadherin and enhances VE-cadherin function in transfected cells (Nawroth, R., G. Poell, A. Ranft, U. Samulowitz, G. Fachinger, M. Golding, D.T.
全球贸易项目编号
| 货号 | GTIN |
|---|---|
| T1021-1VL | 04061837336416 |