Human IL-19 Alexa Fluor® 405-conjugated Antibody

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IC1035V-100UG
R&D Systems Antibodies
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Human IL-19 Alexa Fluor® 405-conjugated Antibody Summary

Species Reactivity
Human
Specificity
Detects human IL-19 in direct ELISAs.
Source
Monoclonal Mouse IgG2b Clone # 152112
Immunogen
E. coli-derived recombinant human IL-19
Leu25-Ala177
Accession # AAN40906
Formulation
Supplied 0.2 mg/mL in a saline solution containing BSA and Sodium Azide.
Label
Alexa Fluor 405 (Excitation= 405 nm, Emission= 421 nm)

Applications

Recommended Concentration
Sample
Intracellular Staining by Flow Cytometry
0.25-1 µg/106 cells
Human LPS-treated peripheral blood mononuclear cells fixed with paraformaldehyde and permeabilized with saponin

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

Shipping
The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage
Store the unopened product at 2 - 8 °C. Do not use past expiration date.

Background: IL-19

Human Interleukin 19 (IL-19) is a member of the IL-10 family of related cytokines. Its gene contains two alternate translation initiation sites, generating precursors of 215 amino acids (aa) and 177 aa, respectively. Both isoforms are processed to 17 kDa, 153 aa mature molecules. IL-19 contains seven helices and is secreted as a 35 kDa monomer. There are two potential N-linked glycosylation sites, and it is likely that the molecule is glycosylated. Mature human IL-19 shares 69% aa sequence identity with the mature mouse homologue. Although mouse IL-19 is active on human cells, human IL-19 is not active on mouse cells. IL-19 expression is limited to activated keratinocytes and monocytes. IL-19 binds a receptor complex consisting of the IL-20 receptor alpha (IL-20 R alpha, also known as IL-20 R1) and the IL-20 receptor beta (IL-20 R beta or IL-20 R2). This receptor complex is also shared by IL-20 and IL-24. Functionally, IL-19 induces IL-6 and TNF-alpha production by monocytes, and drives T-helper cell differentiation towards a Th2 response (1‑5).

References
  1. Gallagher, G. et al. (2000) Genes Immun. 1:442.
  2. Gallagher, G. et al. (2004) Int. Immunopharmacol. 4:615.
  3. Laio, Y-C. et al. (2002) J. Immunol. 169:4288.
  4. Romer, J. et al. (2003) J. Invest. Dermatol. 121:1306.
  5. Pestka, S. et al. (2004) Annu. Rev. Immunol. 22:929.
Long Name
Interleukin 19
Entrez Gene IDs
29949 (Human); 329244 (Mouse)
Alternate Names
IL-10C; IL19; IL-19; interleukin 19; MDA1; melanoma differentiation associated protein-like protein; NG.1Melanoma differentiation-associated protein-like protein; ZMDA1interleukin-19

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