Overview
Immunoglobulin E (IgE) is a 180 kDa soluble protein serving as an antigen-specific unit of mast cell effector mechanisms. IgE has the lowest serum concentration of all immunoglobulins (approximately 0.5 mg/l) in healthy individuals, but upon allergen challenge its concentration in blood increases dramatically. Although biological survival of free IgE is very short (T1/2 = 2 days), it is stabilized after binding to its high affinity receptor. Unlike IgM- IgG- and IgA-committed B cells, IgE-switched B cells do not undergo clonal expansion.
Specificity:
The antibody BE5 reacts with human IgE; it recognizes an epitope different from the ones recognized by 4G7 and 4H10 antibodies to IgE.
Antigen
IgE
Clone
BE5
Species Reactivity
Human
Negative Species
N/A
Isotype
Mouse IgG1
Immunogen
Purified human IgE.
Application
FC (QC tested)
Regulatory status
RUO
Concentration
0.1 mg/ml
Format
PE-Cy5
Storage / Stability
Store at 2-8°C. Protect from prolonged exposure to light. Do not freeze.
Storage Buffer
Stabilizing phosphate buffered saline (PBS), pH 7.4, 15 mM sodium azide