Hepatitis B E Antigen / HBeAg Protein

Specifications

Product Data
Expression Host	E. coli
Concentration	lot specific
Purity	~95% by SDS-PAGE
Buffer	Presentation State: Purified State: Liquid purified fraction Buffer System: 50 mM Sodium Phosphate, pH 6.8 with 5% Gylcerol and 0.02% Sodium Azide as preservative
Preparation	Liquid purified fraction
Applications	ELISA and Western blot Immunoassay
Protein Description	Hepatitis B Ag 'e' epitope Recomb. Hepatitis B Virus, 'e' Antigen, Recombinant. 17 kDa M.W., 160 a.a. portion. Contains the 10 amino acid pre-core sequence. Does not contain fusion partner.
Storage	Upon receipt store at -20°C. Avoid multiple freeze/thaw cycles.
Stability	Shelf life: six months from despatch.
Reference Data
Synonyms	HBV External core antigen, HBV Precore protein
Summary	Hepatitis B e-antigen (HBeAg) is a viral protein associated with HBV infections. Unlike the surface antigen, the e-antigen is found in the blood only when there are viruses also present. When the virus goes into “hiding,” the e-antigen will no longer be present in the blood. HBeAg is often used as a marker of ability to spread the virus to other people (infectivity). Measurement of e-antigen may also be used to monitor the effectiveness of HBV treatment; successful treatment will usually eliminate HBeAg from the blood and lead to development of antibodies against e-antigen (anti-HBe). There are some types (strains) of HBV that do not make e-antigen; these are especially common in the Middle East and Asia. In areas where these strains of HBV are common, testing for HBeAg is not very useful.
Protein Families	ELISA and Western blot Immunoassay

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