Key Product Details

Validated by

Biological Validation

Species Reactivity

Validated:

Human

Cited:

Human, Rat

Applications

Validated:

Western Blot, Neutralization, Intracellular Staining by Flow Cytometry, CyTOF-ready

Cited:

Neutralization, Blocking

Label

Unconjugated

Antibody Source

Monoclonal Mouse IgG1 Clone # 31606
View all IL-13 Primary Antibodies »

Product Specifications

Immunogen

E. coli-derived recombinant human IL-13
Gly35-Asn146
Accession # P35225

Specificity

Detects human IL-13 in direct ELISAs and Western blots. In direct ELISAs and Western blots, no cross-reactivity with recombinant human IL‑4 or recombinant mouse IL-13 is observed.

Clonality

Monoclonal

Host

Mouse

Isotype

IgG1

Endotoxin Level

<0.10 EU per 1 μg of the antibody by the LAL method.

Scientific Data Images for Human IL‑13 Antibody

Detection of IL-13 antibody in Human PBMCs antibody by Flow Cytometry.

Detection of IL‑13 in Human PBMCs by Flow Cytometry.

Human peripheral blood mononuclear cells (PBMCs) treated with 5 ng/mL Recombinant Human IL-4 (Catalog # 204-IL) and 10 µg/mL Goat Anti-Human IFN-gamma Antigen Affinity-purified Polyclonal Antibody (Catalog # AF-285-NA) for 3 days were stained with Mouse Anti-Human IL-13 Monoclonal Antibody (Catalog # MAB2131) followed by Allophycocyanin-conjugated Anti-Mouse IgG Secondary Antibody (Catalog # F0101B) and Mouse Anti-Human CD4 PE-conjugated Monoclonal Antibody (Catalog # FAB3791P). Quadrant markers were set based on control antibody staining (Catalog # MAB002).
Cell Proliferation Induced by IL‑13 and Neutralization by Human IL‑13 Antibody.

Cell Proliferation Induced by IL‑13 and Neutralization by Human IL‑13 Antibody.

Recombinant Human IL-13 (Catalog # 213-ILB) stimulates proliferation in the TF-1 human erythroleukemic cell line in a dose-dependent manner (orange line). Proliferation elicited by Recombinant Human IL-13 (10 ng/mL) is neutralized (green line) by increasing concen-trations of Mouse Anti-Human IL-13 Monoclonal Antibody (Catalog # MAB2131). The ND50 is typically 1-4 µg/mL.

Applications for Human IL‑13 Antibody

Application
Recommended Usage

CyTOF-ready

Ready to be labeled using established conjugation methods. No BSA or other carrier proteins that could interfere with conjugation.

Intracellular Staining by Flow Cytometry

0.25 µg/106 cells
Sample: Human peripheral blood mononuclear cells (PBMCs) treated with Recombinant Human IL‑4 (Catalog # 204-IL) and Goat Anti-Human IFN‑ gamma Antigen Affinity-purified Polyclonal Antibody (Catalog # AF-285-NA)

Western Blot

1 µg/mL
Sample: Recombinant Human IL‑13 (Catalog # 213-ILB)

Neutralization

Measured by its ability to neutralize IL‑13-induced proliferation in the TF‑1 human erythroleukemic cell line. Kitamura, T. et al. (1989) J. Cell Physiol. 140:323. The Neutralization Dose (ND50) is typically 1-4 µg/mL in the presence of 10 ng/mL Recombinant Human IL‑13.

Reviewed Applications

Read 3 reviews rated 4 using MAB2131 in the following applications:

Flow Cytometry Panel Builder

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Advanced Features

  • Spectra Viewer - Custom analysis of spectra from multiple fluorochromes
  • Spillover Popups - Visualize the spectra of individual fluorochromes
  • Antigen Density Selector - Match fluorochrome brightness with antigen density
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Flow Cytometry

Formulation, Preparation, and Storage

Purification

Protein A or G purified from ascites

Reconstitution

Reconstitute at 0.5 mg/mL in sterile PBS. For liquid material, refer to CoA for concentration.

Formulation

Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied either lyophilized or as a 0.2 µm filtered solution in PBS.

Shipping

Lyophilized product is shipped at ambient temperature. Liquid small pack size (-SP) is shipped with polar packs. Upon receipt, store immediately at the temperature recommended below.

Stability & Storage

Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 6 months, -20 to -70 °C under sterile conditions after reconstitution.

Calculators

The reconstitution calculator allows you to quickly calculate the volume of a reagent to reconstitute your vial. Simply enter the mass of reagent and the target concentration and the calculator will determine the rest.

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Background: IL-13

IL-13 is a 17 kDa immunoregulatory cytokine that plays a key role in the pathogenesis of allergic asthma and atopy. It is secreted by Th1 and Th2 CD4+ T cells, NK cells, visceral smooth muscle cells, eosinophils, mast cells, and basophils (1-3). IL-13 circulates as a monomer with two internal disulfide bonds that contribute to a bundled four alpha -helix configuration (4, 5). Mature human IL-13 shares 57%, 59%, and 94% amino acid sequence identity with mouse, rat, and rhesus IL-13, respectively. Despite the low homology, it exhibits cross-species activity between human, mouse, and rat (6, 7). IL-13 has diverse activities on numerous cell types (8). On macrophages, IL-13 suppresses the production of proinflammatory cytokines and other cytotoxic substances. On B cells, IL-13 induces immunoglobulin class switching to IgE, upregulates the expression of MHC class II, CD71, CD72, and CD23, and costimulates proliferation. IL-13 upregulates IL-6 while downregulating IL-1 and TNF-alpha production by fibroblasts and endothelial cells. IL-13 binds with low affinity to IL-13 R alpha 1, triggering IL-13 R alpha 1 association with IL-4 R alpha. This high affinity receptor complex also functions as the type 2 IL-4 receptor complex (9, 10). Additionally, IL-13 binds with high affinity to IL-13 R alpha 2 which is expressed intracellularly, on the cell surface, and as a soluble molecule (11-14). IL-13 R alpha 2 regulates the bioavailability of both IL-13 and IL-4 and is over-expressed in glioma and several bronchial pathologies (10, 15, 16). Compared to wild type IL-13, the atopy-associated R110Q variant of IL-13 elicits increased responsiveness from eosinophils that express low levels of IL-13 R alpha 2 (17).

References

  1. Wills-Karp, M. (2004) Immunol. Rev. 202:175.
  2. Nakajima H. and K. Takatsu (2007) Int. Arch. Allergy Immunol. 142:265.
  3. McKenzie, A.N. et al. (1993) Proc. Natl. Acad. Sci. USA 90:3735.
  4. Moy, F.J. et al. (2001) J. Mol. Biol. 310:219.
  5. Eisenmesser, E.Z. et al. (2001) J. Mol. Biol. 310:231.
  6. Ruetten, H. and C. Thiemermann (1997) Shock 8:409.
  7. Lakkis, F.G. et al. (1997) Biochem. Biophys. Res. Commun. 235:529.
  8. Wynn, T.A. (2003) Annu. Rev. Immunol. 21:425.
  9. Andrews, A.L. et al. (2002) J. Biol. Chem. 277:46073.
  10. Tabata, Y. et al. (2007) Curr. Allergy Asthma Rep. 7:338.
  11. Chiaramonte, M.G. et al. (2003) J. Exp. Med. 197:687.
  12. Daines, M.O. and G.K. Hershey (2002) J. Biol. Chem. 227:10387.
  13. Matsumura, M. et al. (2007) Biochem. Biophys. Res. Commun. 360:464.
  14. Tabata, Y. et al. (2007) J. Immunol. 177:7905.
  15. Andrews, A.L. et al. (2006) J. Allergy Clin. Immunol. 118:858.
  16. Joshi, B.H. et al. (2006) Vitam. Horm. 74:479.
  17. Andrews, A-L. et al. (2007) J. Allergy Clin. Immunol. 120:91.

Long Name

Interleukin 13

Alternate Names

IL13, NC30, P600

Entrez Gene IDs

3596 (Human); 16163 (Mouse); 116553 (Rat); 574325 (Primate)

Gene Symbol

IL13

UniProt

P35225

Additional IL-13 Products

Product Documents for Human IL‑13 Antibody

Certificate of Analysis

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Note: Certificate of Analysis not available for kit components.

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Product Specific Notices for Human IL‑13 Antibody

For research use only

Citations for Human IL‑13 Antibody

Customer Reviews for Human IL‑13 Antibody (3)

4 out of 5
3 Customer Ratings
5 Stars
67%
4 Stars
0%
3 Stars
0%
2 Stars
33%
1 Stars
0%

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Customer Images

Showing  1 - 3 of 3 reviews Showing All
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  • IL-33 protein expression
    Name: Anonymous
    Application: Simple Western
    Sample Tested: Lung tissue
    Species: Mouse
    Verified Customer | Posted 09/10/2025
    IL-13 protein expression in mouse lung homogenate
    Assessed the protein expression of IL-13 in smoke treated mice
    Human IL‑13 Antibody MAB2131
    Bio-Techne Response
    This review reflects a new species or application tested on a primary antibody.
  • Human IL-13 Antibody
    Name: Anonymous
    Application: Luminex
    Sample Tested: Serum
    Species: Human
    Verified Customer | Posted 11/08/2018
  • Human IL-13 Antibody
    Name: Balaji Mahender
    Application: ELISA
    Sample Tested: EDTA Plasma
    Species: Human
    Verified Customer | Posted 01/18/2018

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