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Merck
모든 사진(3)

문서

T2327

Sigma-Aldrich

Trypsin inhibitor

lyophilized powder, ≥95% (Kunitz inhibitor, SDS-PAGE)

동의어(들):

Kunitz Inhibitor

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About This Item

CAS Number:
EC Number:
MDL number:
UNSPSC 코드:
12352204
NACRES:
NA.77

product name

Trypsin Inhibitor from Glycine max (soybean), BioUltra, lyophilized powder, ≥95% (Kunitz inhibitor, SDS-PAGE)

생물학적 소스

Glycine max (soybean)

제품 라인

BioUltra

분석

≥95% (Kunitz inhibitor, SDS-PAGE)

형태

lyophilized powder

저장 온도

2-8°C

일반 설명

Trypsin Inhibitor from Glycine max (soybean) also known as Kunitz trypsin inhibitor is a 21 kDa protein with a single trypsin binding reactive site.

애플리케이션

Trypsin Inhibitor from Glycine max (soybean) has been used:
  • as a standard protein to measure the amount of endogenous trypsin inhibitor present in midgut lysate (M1) of Riptortus pedestris
  • as a standard to compare the trypsin inhibitory activity of the purified protein
  • to monitor the trypsin inhibitory activity by fractionating in MonoS cation exchange chromatography
  • as an trypsin inhibitor

생화학적/생리학적 작용

Soybean trypsin inhibitor inhibits trypsin and to a lesser extent chymotrypsin and plasmin. It forms a 1:1 stoichiometric complex with trypsin. Upon formation of this complex, trypsin may cleave a single arginine-isoleucine bond in the inhibitor. Dissociation of this complex may yield the modified form or the native inhibitor. At the optimal pH for trypsin binding (pH 8.0), the association constant is ≥ 10x108.
Trypsin Inhibitor from Glycine max (soybean) binds with the active site of trypsin enzyme, in a competitive inhibition manner.

단위 정의

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.

제조 메모

Further purification of T9128 yielding an electrophoretically pure Kunitz inhibitor with increased activity.
Trypsin inhibitor is soluble in water and phosphate buffers at concentrations of 10 mg/ml or higher. Solutions at higher concentrations may be hazy and have a yellow to amber color.

분석 메모

One mg will inhibit ≥1.0 mg of trypsin with activity of approx. 10,000 BAEE units per mg protein.

기타 정보

View more information on Trypsin Inhibitor.

픽토그램

Health hazard

신호어

Danger

유해 및 위험 성명서

Hazard Classifications

Resp. Sens. 1 - Skin Sens. 1

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point (°F)

Not applicable

Flash Point (°C)

Not applicable

개인 보호 장비

Eyeshields, Gloves, type N95 (US)


시험 성적서(COA)

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문서 라이브러리 방문

Xingfei Li et al.
Journal of agricultural and food chemistry, 66(17), 4439-4448 (2018-03-23)
We first observed that protein/polysaccharide interaction exhibited noninteracting behavior which makes Bowman-Birk chymotrypsin inhibitor (BBI) always free of complexation, being separated from another protein with similar isoelectric points, Kunitz trypsin inhibitor (KTI). Turbidity titrations showed that the electrostatic attractions were
Functional analysis of the Kunitz trypsin inhibitor family in poplar reveals biochemical diversity and multiplicity in defense against herbivores
Major IT and Constabel CP
Plant Physiology, 146(3), 888-903 (2008)
A continuous fluorometric assay for trypsin based on melittin and the noncovalent-binding-induced pyrene excimer
Xu N, et al.
Chemistry Letters (Jpn), 42(12), 1528-1530 (2013)
Quantitative determination of active Bowman-Birk isoinhibitors, IBB1 and IBBD2, in commercial soymilks
Arques MC, et al.
Food Chemistry, 155, 24-30 (2014)
The selective complex behavior between soybean whey proteins and i-carrageenan and isolation of the major proteins of the soybean whey
Li X, et al.
Food Hydrocolloids, 56, 207-217 (2016)

프로토콜

This technical article described the Enzymatic Assay of Trypsin Inhibitor.

Chromatograms

application for HPLC

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