Abbreviation
Recombinant Human IL13 protein (R144Q), partial (Active)
Purity
>97% as determined by SDS-PAGE.
Endotoxin
Less than 1.0 EU/μg as determined by LAL method.
Activity
Fully biologically active when compared to standard. The ED50 as determined by a cell proliferation assay using human TF-1 cells is less than 0.5 ng/ml, corresponding to a specific activity of >2.0x106 IU/mg.
Alternative Names
Allergic rhinitis; ALRH; BHR 1; BHR1; Bronchial hyperresponsiveness 1 (bronchial asthma); IL 13; IL-13; Il13; IL13_HUMAN; Interleukin 13; Interleukin-13; interleukin13; MGC116786; MGC116788; MGC116789; NC 30; NC30; P 600; P600
Species
Homo sapiens (Human)
Expression Region
35-146aa(R144Q)
Target Protein Sequence
GPVPPSTALR ELIEELVNIT QNQKAPLCNG SMVWSINLTA GMYCAALESL INVSGCSAIE KTQRMLSGFC PHKVSAGQFS SLHVRDTKIE VAQFVKDLLL HLKKLFREGQ FN
Note: The complete
sequence may include tag sequence, target protein sequence, linker sequence and extra sequence that is
translated with the protein sequence for the purpose(s) of secretion, stability, solubility, etc.
If the exact amino acid sequence of this recombinant protein is critical to your application,
please explicitly request the full and complete sequence of this protein before ordering.
Tag Info
Tag-Free
The tag type will be determined during production process. If you have specified tag type, please tell us and we will develop the specified tag preferentially.
Buffer
0.2 μm filtered PBS, pH 7.2, with 5 % trehalose ,lyophilized
Lead Time
5-10 business days
Note: All of our proteins are default shipped with normal blue ice packs, if you request to ship with dry ice, please communicate with us in advance and extra fees will be charged.
Shelf Life
The shelf life is related to many factors, storage state, buffer ingredients, storage temperature and the stability of the protein itself.
Generally, the shelf life of liquid form is 6 months at -20°C/-80°C. The shelf life of lyophilized form is 12 months at -20°C/-80°C.
Datasheet & COA
Please contact us to get it.
Description
The R144Q variant of human IL-13 is a clinically relevant gain-of-function polymorphism associated with enhanced IgE production and asthma susceptibility, making it a critical tool for studying Th2-driven inflammatory signaling. This tag-free recombinant protein (residues 35–146) demonstrates exceptional potency with an ED50 below 0.5 ng/ml in TF-1 cell proliferation assays, corresponding to a specific activity exceeding 2.0 × 10⁶ IU/mg—providing reliable dose-response performance in JAK/STAT6 pathway activation studies, B-cell differentiation assays, and macrophage polarization experiments. Endotoxin levels below 1.0 EU/μg ensure that downstream immune cell responses reflect genuine IL-13 signaling rather than LPS-driven artifacts, which supports use in primary cell functional assays and in vivo models of allergic inflammation. Purity exceeding 97% by SDS-PAGE further qualifies this protein as a reference standard in IL-13 detection assays or as a coating antigen for antibody development campaigns targeting the R144Q variant.