Description
Recombinant Human Interleukin 4 (IL4) is a bioactive protein intended for use in cell culture applications. IL4 promotes the proliferation and differentiation of activated B cells. In addition, IL4 up-regulates class II MHC antigen expression and IgE receptors.
Full Name
Human Interleukin 4
Source
E. coli
Species
Human
Accession #
P05112
Molecule Weight
The mature recombinant human IL-4 consists of 129 amino acids and has a predicted molecular mass of 15 kDa.
Purity
> 95 % as determined by SDS-PAGE
Endotoxin
< 0.1 EU per μg of the protein as determined by the LAL method
Activity
The ED50 as determined by the dose-dependant stimulation of TF-1 cells is < 0.2 ng/ml, corresponding to a Specific Activity of 5,000,000 IU/mg.
Storage
-80 °C, avoid repeated freeze-thaw cycles.
Storage Buffer
PBS