Human IL-28A/IFN-lambda 2 Antibody

Catalog #: MAB15873 Datasheet / COA / SDS

Recombinant Monoclonal Antibody

Catalog #	Availability	Size / Price	Qty
MAB15873-100
MAB15873-SP

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Summary Preparation and Storage Reconstitution Calculator Background Product Datasheets Related Research Areas

Human IL-28A/IFN-lambda 2 Antibody Summary

Species Reactivity

Human

Specificity

Detects human IL-28A/IFN‑ lambda 2 in direct ELISAs.

Source

Recombinant Monoclonal Mouse IgG₁ Clone # 884113R

Purification

Protein A or G purified from cell culture supernatant

Immunogen

Mouse myeloma cell line NS0-derived recombinant human IL-28A/IFN‑ lambda 2
Val26-Val200
Accession # NP_742150

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

ELISA

This antibody functions as an ELISA capture antibody when paired with Mouse Anti-Human IL‑28A/IFN‑ lambda 2 Monoclonal Antibody (Catalog # MAB15874).

This product is intended for assay development on various assay platforms requiring antibody pairs. We recommend the Human IL-28A/IFN-lambda 2 DuoSet ELISA Kit (Catalog # DY1587) for convenient development of a sandwich ELISA.

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

Preparation and Storage

Reconstitution

Reconstitute at 0.5 mg/mL in sterile 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.

Background: IL-28A/IFN-lambda 2

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 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 regions of the target genes. Human IL-28A cDNA encodes a 200 amino acid (aa) residue precursor protein with a putative 25 aa signal peptide. It shares 94% and 67% aa sequence identity with human IL-28B and human IL-29, respectively.

References