Human IL-20 Biotinylated Antibody

Catalog # Availability Size / Price Qty
BAF1102

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Human IL-20 Biotinylated Antibody Summary

Species Reactivity
Human
Specificity
Detects human IL-20 in ELISAs and Western blots. In sandwich immunoassays, less than 0.2% cross-reactivity with recombinant mouse IL‑20 is observed.
Source
Polyclonal Goat IgG
Purification
Antigen Affinity-purified
Immunogen
E. coli-derived recombinant human IL‑20 (R&D Systems, Catalog # 1102-IL)
Leu25-Glu176
Accession # AAF36679
Formulation
Lyophilized from a 0.2 μm filtered solution in PBS with BSA as a carrier protein.
Label
Biotin

Applications

Recommended Concentration
Sample
Western Blot
0.1 µg/mL
Recombinant Human IL‑20 (Catalog # 1102-IL)

Human IL-20 Sandwich Immunoassay

Recommended Concentration
Reagent
ELISA Detection (Matched Antibody Pair)
0.1-0.4 µg/mL 

Use in combination with:

Capture Reagent: Human IL‑20 Antibody (Catalog # MAB11022)

Standard: Recombinant Human IL-20 Protein (Catalog # 1102-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.

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Preparation and Storage

Reconstitution
Reconstitute at 0.2 mg/mL in sterile PBS.
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Shipping
The product is shipped at ambient temperature. Upon receipt, store it 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-20

Human Interleukin 20 (IL-20) was identified by searching sequence databases for translated sequences containing a signal sequence and amphipathic helices found in helical cytokines. Human IL-20 is synthesized as a 176 amino acid (aa) precursor with a 24 aa signal sequence and a 152 aa mature segment. There are no N-linked glycosylation sites and it is doubtful that the native molecule is glycosylated. Although IL-20 is a distant member of the IL-10 family, it functions as a monomer. IL‑20 shares less than 40% aa sequence identity with other IL-10 family members. Mouse and human IL‑20 share 77% aa sequence identity in their mature segments. Human IL‑20 is active on mouse cells. IL-20 production has been found in skin and trachea. In particular, activated keratinocytes and, possibly, monocytes are reported to express IL-20. There are two heterodimeric receptor complexes for IL-20. The first is composed of IL-20 R alpha and IL-20 R beta. The second is composed of IL‑22 R and IL-20 R beta. Whereas the IL-22 R/IL-20 R beta complex is shared with IL-24/mda-7, the IL-20 R alpha /IL-20 R beta  complex is shared with both IL-19 and IL-24. Little is known about the function of IL-20. It is reported to induce the proliferation of multipotential hematopoietic progenitor cells, direct the differentiation and expansion of keratinocytes, and promote the release of proinflammatory mediators in keratinocytes and other IL-20 receptor expressing cells (1-6).

References
  1. Blumberg, H. et al. (2001) Cell 104:9.
  2. Liu, L. et al. (2003) Blood 102:3206. 
  3. Rich, B.E. and T.S. Kupper (2001) Curr. Biol. 11:R531.
  4. Pestka, S. et al. (2004) Annu. Rev. Immunol. 22:929. 
  5. Dumoutier, L. (2001) J. Immunol. 167:3545. 
  6. Romer, J. (2003) J. Invest. Dermatol. 121:1306.
Long Name
Interleukin 20
Entrez Gene IDs
50604 (Human); 58181 (Mouse)
Alternate Names
Cytokine Zcyto10; IL10D; IL20; IL-20; IL-20ZCYTO10four alpha helix cytokine; interleukin 20; interleukin-20; MGC96907

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