Human IL-12/IL-23 p40 Antibody

Catalog # Availability Size / Price Qty
MAB609-SP
MAB609-500
MAB609-100
Product Details
Citations (2)
FAQs
Supplemental Products
Reviews (1)

Human IL-12/IL-23 p40 Antibody Summary

Species Reactivity
Human
Specificity
Detects human IL-12/IL-23 p40 in ELISAs. In ELISAs, this antibody shows less than 5% cross-reactivity with recombinant human (rh) IL‑12 (p35/p40 heterodimer) and rhIL-23 (p19/p40 heterodimer). No significant cross-reactivity or interference was observed with rhIL-1 alpha, rmIL-1 alpha, rhIL-1 beta, rmIL-1 beta, rhIL-1ra, rhIL-1 RI, rhIL-1 RII, rhIL-2, rhIL-2 R alpha, rhIL-3, rmIL-3, rhIL-4, rmIL-4, rhIL-4 R, rhIL-5, rmIL-5, rhIL-5 R beta, rhIL-6, rhIL-6 R, rmIL-6, rhIL-7, rmIL-7, rhIL-8, rhIL-9, rmIL-9, rhIL-10, rmIL-10, rhIL-11, rmIL-12, rmIL-12 p40, rhIL-13, or rmIL-13.
Source
Monoclonal Mouse IgG1 Clone # 31052
Purification
Protein A or G purified from ascites
Immunogen
S. frugiperda insect ovarian cell line Sf 21-derived recombinant human IL-12/IL-23 p40 free monomer
Ile23-Ser328
Accession # P29460
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.
Label
Unconjugated

Applications

Recommended Concentration
Sample

Human IL-12/IL-23 p40 Sandwich Immunoassay

Recommended Concentration
Reagent
ELISA Capture (Matched Antibody Pair)
2-8 µg/mL 

Use in combination with:

Detection Reagent: Human IL‑12 Biotinylated Antibody (Catalog # BAF219)

Standard: Recombinant Human IL-12/IL-23 p40 Monomer Protein (Catalog # 309-IL)

Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.

Reconstitution Calculator

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Preparation and Storage

Reconstitution
Reconstitute at 0.5 mg/mL in sterile PBS.
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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.

Background: IL-12/IL-23 p40

Interleukin 12, also known as natural killer cell stimulatory factor (NKSF) or cytotoxic lymphocyte maturation factor (CLMF), is a pleiotropic cytokine originally identified in the medium of activated human B lymphoblastoid cell lines. IL-12 is produced by macrophages and B lymphocytes and has multiple effects on T-cells and NK cells, including stimulation of cytotoxic activity, proliferation, and promotion of Th1 development as well as IFN-gamma and TNF production. IL-12 is a
disulfide-linked, 70 kDa (p70) heterodimeric glycoprotein composed of a 40 kDA (p40) subunit and a 35 kDa (p35) subunit. The p40 and p35 subunits by themselves have no IL‑12 activity, the p40 dimer has been shown to bind the IL-12 receptor and to be an IL-12 antagonist. Free p35 has not been detected in supernatant solutions of cultured cells expressing only p35 or both p35 and p40 mRNAs. In contrast, p40 is secreted in excess of IL-12 in cells expressing both p35 and p40 mRNAs. The p40 subunit of IL-12 has been shown to have extensive amino acid sequence homology to the extracellular domain of the human IL-6 receptor while the p35 subunit shows distant but significant sequence similarity to IL-6, G-CSF, and chicken MGF. These observations have led to the suggestion that IL-12 might have evolved from a cytokine/soluble receptor complex. Human and mouse IL-12 share 70% and 60% amino acid sequence homology in their p40 and p35 subunits, respectively. IL-12 apparently shows species specificity with human IL-12 reportedly showing minimal activity in the murine system.

Long Name
Interleukin 12/Interleukin 23 p40
Entrez Gene IDs
3593 (Human); 16160 (Mouse); 64546 (Rat); 397076 (Porcine); 403976 (Canine); 102124858 (Cynomolgus Monkey); 493741 (Feline); 694747 (Rhesus Macaque)
Alternate Names
CLMF p40; CLMF; CLMF2; Cytotoxic lymphocyte maturation factor 40 kDa subunit; IL12 p40; IL-12 p40; IL-12 subunit p40; IL12B; IL-12B; IL-12BNK cell stimulatory factor chain 2; interleukin 12, p40; interleukin 12B (natural killer cell stimulatory factor 2, cytotoxic lymphocytematuration factor 2, p40); interleukin-12 beta chain; interleukin-12 subunit beta; natural killer cell stimulatory factor, 40 kD subunit; NKSF; NKSF2; NKSF2IL12, subunit p40

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Citations for Human IL-12/IL-23 p40 Antibody

R&D Systems personnel manually curate a database that contains references using R&D Systems products. The data collected includes not only links to publications in PubMed, but also provides information about sample types, species, and experimental conditions.

2 Citations: Showing 1 - 2
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  1. Human rhinoviruses induce IL-35-producing Treg via induction of B7-H1 (CD274) and sialoadhesin (CD169) on DC.
    Authors: Jindra C
    Eur J Immunol, 2010-02-01;40(2):321-9.
    Species: Human
    Sample Types: Cell Culture Supernates
    Applications: Immunoprecipitation
  2. TLR-stimulated CD34 stem cell-derived human skin-like and monocyte-derived dendritic cells fail to induce Th17 polarization of naive T cells but do stimulate Th1 and Th17 memory responses.
    Authors: Duraisingham SS, Hornig J, Gotch F, Patterson S
    J. Immunol., 2009-07-22;183(4):2242-51.
    Species: Human
    Sample Types: Whole Cells
    Applications: ELISA Development

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Reviews for Human IL-12/IL-23 p40 Antibody

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Human IL-12/IL-23 p40 Antibody
By Alisha Freeman on 12/13/2017
Application: ELISA Sample Tested: CHO Chinese hamster ovary cell line Species: Hamster