IL4; interleukin-4; BCGF 1; BCGF1; BSF1; IL 4; IL-4; BSF-1; BCGF-1;
Lyophilized from sterile PBS, pH 7.4.
The ED50 of rHuIL4 as determined by a cell proliferation assay using human TF-1 cells is less than 0.2 ng/ml, corresponding to a specific activity of> 5.0 × 10^6 IU/mg.
Recombinant Human IL4 Protein is a single non-glycosylated polypeptide chain and has a molecular mass of approximately 15.0 kDa.
HKCDITLQEI IKTLNSLTEQ KTLCTELTVT DIFAASKNTT EKETFCRAAT VLRQFYSHHE KDTRCLGATA QQFHRHKQLI RFLKRLDRNL WGLAGLNSCP VKEANQSTLE NFLERLKTIM REKYSKCSS
< 1.0 EU per 1 microgram of protein (determined by LAL method).
> 98 % by SDS-PAGE.