Human IL-29/IFN-lambda 1 Alexa Fluor® 350-conjugated Antibody

Catalog #: FAB15981U Datasheet / COA / SDS

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FAB15981U-100UG

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Human IL-29/IFN-lambda 1 Alexa Fluor® 350-conjugated Antibody Summary

Species Reactivity

Human

Specificity

Detects human IL-29/IFN-lambda 1 in ELISAs. In sandwich immunoassays, 100% cross-reactivity with recombinant human (rh) IL-28B/IFN-lambda 3 and 20% with rhIL‑28A is observed. No cross-reactivity or interference was observed with rhIFN-alpha A, rhIFN-alpha B2, rh

Source

Monoclonal Mouse IgG2a Clone # 247801

Purification

Protein A or G purified

Immunogen

Mouse myeloma cell line NS0-derived recombinant human IL-29/IFN-Î»1
Gly20-Thr200
Accession # Q8IU54

Formulation

Supplied 0.2mg/ml in 1X PBS with RDF1 and 0.09% Sodium Azide

Label

Alexa Fluor 350 (Excitation= 346 nm, Emission= 442 nm)

Applications

Recommended Concentration

Sample

Neutralization

Optimal dilution of this antibody should be experimentally determined.

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

Protect from light. Do not freeze. 12 months from date of receipt, 2 to 8 °C as supplied

Background: IL-29/IFN-lambda 1

IL-28A, IL-28B, and IL-29, also named interferon-lambda 2 (IFN-lambda 2), IFN-lambda 3, and IFN-lambda 1, respectively, are class II cytokine receptor ligands that are distantly related to members of the IL-10 family (11‑13% aa sequence identity) and the type I IFN family (15‑19% aa sequence identity) (1‑3). The genes encoding these three cytokines are localized to chromosome 19 and each is composed of multiple exons. The exon organization of these genes is also found in the IL-10 family genes but is distinct from the type I IFNs, which are encoded within a single exon, The expression of IL-28A, B, and IL-29 is induced by virus infection or double-stranded RNA. All three cytokines exert bioactivities that overlap those of type I IFNs, including antiviral activity and up-regulation of MHC class I antigen expression. The three proteins signal through the same heterodimeric receptor complex that is composed of the IL-10 receptor beta (IL-10 R beta ) and a novel IL-28 receptor alpha (IL-28 R alpha, also known as IFN-lambda R1). Ligand binding to the receptor complex induces Jak kinase activation and STAT1 and STAT2 tyrosine phosphorylation. The phosphorylated STAT1 and STAT2 complex with IFN-regulatory factor 9 (IRF-9) to form the IFN-stimulated regulatory factor 3 (ISGF-3) transcription factor complex that is translocated to the nucleus. ISGF-3 binds to the IFN-stimulated response element (ISRE) present in the regulatory region of the target genes. Human IL-29 cDNA encodes a 200 amino acid (aa) residue precursor protein with a putative 19 aa signal peptide and a 181 aa mature protein, which is a monomer in solution. It shares 67% and 69% aa sequence identity with human IL-28A and IL-28B, respectively.

Long Name

Interleukin 29

Entrez Gene IDs

282618 (Human)

Alternate Names

cytokine Zcyto21; IFNL1; IFN-lambda 1; IFN-lambda-1; IL29; IL-29; interferon lambda-1; interferon, lambda 1; interleukin 29 (interferon, lambda 1); interleukin-29; ZCYTO21