Anti-Phospho-Interferon-alpha Receptor, Type I, Subunit 1 (Ser535,539) Antibody

Interferons are widely used therapeutic agents because of their anti tumor and antiviral effects and because of their modulatory effects on the immune system (Biron, 2001; Kirkwood, 2002) . These cytokines produce their effects by binding to the Type 1 Interferon-α Receptor (IFNAR1) . Down regulation of this receptor plays a key role in determining the magnitude and duration of cytokine signaling. This down regulation is thought to be influenced by phosphorylation of Serine-535 and Ser-539 in the IFNAR1 (Kumar et al., 2003) .

Alpha-Type Antiviral Protein, AVP, Beta-Type Antiviral Protein, CRF2-1, Cytokine Receptor Class-II Member 1, Cytokine Receptor Family 2 Member 1, IFN-Alpha/Beta Receptor 1, IFNBR, IFN-Alpha-REC, IFNAR, IFN-R-1, IFRC, Interferon Alpha/Beta Receptor 1, Interferon-Alpha/Beta Receptor Alpha Chain, Interferon Alpha And Beta Receptor Subunit 1, Interferon (Alpha, Beta And Omega) Receptor 1, Interferon-Beta Receptor 1, Interferon Receptor 1, Type I Interferon Receptor 1

Synthetic phospho-peptide corresponding to amino acid residues surrounding Ser535/539 of human interferon-α, conjugated to keyhole limpet hemocyanin (KLH) . Immunogen species is Human.

IFN receptors are present in all tissues and even on the surface of most IFN-resistant cells. Isoform 1, isoform 2 and isoform 3 are expressed in the IFN-alpha sensitive myeloma cell line U266B1. Isoform 2 and isoform 3 are expressed in the IFN-alpha resistant myeloma cell line U266R. Isoform 1 is not expressed in IFN-alpha resistant myeloma cell line U266R.

Cancer, Cytokines, Epigenetics and Nuclear Signaling, Immunology, Innate Immunity, Interferons, Nuclear Signaling, Nuclear Signaling Pathways, Signal Transduction, Signaling Pathway, Tumor Immunology

Component of the receptor for type I interferons, including interferons alpha, IFNB1 and IFNW1 (PubMed:2153461, PubMed:7665574, PubMed:10049744, PubMed:14532120, PubMed:15337770, PubMed:21854986) . Functions in general as heterodimer with IFNAR2 (PubMed:7665574, PubMed:10049744, PubMed:21854986) . Type I interferon binding activates the JAK-STAT signaling cascade, and triggers tyrosine phosphorylation of a number of proteins including JAKs, TYK2, STAT proteins and the IFNR alpha- and beta- subunits themselves (PubMed:7665574, PubMed:21854986) . Can form an active IFNB1 receptor by itself and activate a signaling cascade that does not involve activation of the JAK-STAT pathway (By similarity) .

Storage at -20°C is recommended, as aliquots may be taken without freeze/thawing due to presence of 50% glycerol. Stable for at least 1 year at -20°C. After date of receipt, stable for at least 1 year at -20°C.

Specific for IFNAR1 protein phosphorylated at Ser535,539. Note: the molecular weight of the IFNAR1 varies with cell line (different levels of glycosylation) in 293 and HeLa Cells; the mature form is ~110 kDa - 130 kDa.

Isoform 1: Cell membrane ; Single- pass type I membrane protein. Late endosome. Lysosome. Interferon binding triggers internalization of the receptor from the cell membrane into endosomes and then into lysosomes.