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Key Documents

T1886

Sigma-Aldrich

Trypsin inhibitor from chicken egg white

Type IV-O, Purified Ovoinhibitor

Synonym(s):

Ovomucoid

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About This Item

CAS Number:
EC Number:
MDL number:
UNSPSC Code:
12352202

type

Type IV-O

storage temp.

−20°C

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General description

Ovomucoid or trypsin inhibitor is an abundant protein in most avian egg whites. The hen′s egg protein is composed of about 186 amino acid residues, and is highly glycosylated. Three tandem domains are each homologous with pancreatic trypsin inhibitor. It is highly immunogenic, and probably accounts for most cases of egg allergy.

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 from Type II-O using method C of Tomimatsu, Y., et al., Arch. Biochem. Biophys., 115, 536 (1966).

Analysis Note

Protein determined by biuret.

Pictograms

Health hazard

Signal Word

Danger

Hazard Statements

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

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

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