Purified Membrane Proteins

Interferon alpha/beta receptor 2 (IFN-R-2) (IFN-alpha binding protein) (IFN-alpha/beta receptor 2) (Interferon alpha binding protein) (Type I interferon receptor 2)

Together with IFNAR1, forms the heterodimeric receptor for type I interferons (including interferons alpha, beta, epsilon, omega and kappa) (PubMed:8181059, PubMed:7665574, PubMed:7759950, PubMed:8798579, PubMed:8969169, PubMed:10049744, PubMed:10556041, PubMed:21854986, PubMed:26424569, PubMed:28165510, PubMed:32972995). Type I interferon binding activates the JAK-STAT signaling cascade, resulting in transcriptional activation or repression of interferon-regulated genes that encode the effectors of the interferon response (PubMed:8181059, PubMed:7665574, PubMed:7759950, PubMed:8798579, PubMed:8969169, PubMed:10049744, PubMed:17517919, PubMed:21854986, PubMed:26424569, PubMed:28165510, PubMed:32972995). Mechanistically, type I interferon-binding brings the IFNAR1 and IFNAR2 subunits into close proximity with one another, driving their associated Janus kinases (JAKs) (TYK2 bound to IFNAR1 and JAK1 bound to IFNAR2) to cross-phosphorylate one another (PubMed:10556041, PubMed:11682488, PubMed:12105218, PubMed:21854986, PubMed:32972995). The activated kinases phosphorylate specific tyrosine residues on the intracellular domains of IFNAR1 and IFNAR2, forming docking sites for the STAT transcription factors (STAT1, STAT2 and STAT) (PubMed:11682488, PubMed:12105218, PubMed:21854986, PubMed:32972995). STAT proteins are then phosphorylated by the JAKs, promoting their translocation into the nucleus to regulate expression of interferon-regulated genes (PubMed:9121453, PubMed:12105218, PubMed:28165510). {ECO:0000269|PubMed:10049744, ECO:0000269|PubMed:10556041, ECO:0000269|PubMed:11682488, ECO:0000269|PubMed:12105218, ECO:0000269|PubMed:17517919, ECO:0000269|PubMed:21854986, ECO:0000269|PubMed:26424569, ECO:0000269|PubMed:28165510, ECO:0000269|PubMed:32972995, ECO:0000269|PubMed:7665574, ECO:0000269|PubMed:7759950, ECO:0000269|PubMed:8181059, ECO:0000269|PubMed:8798579, ECO:0000269|PubMed:8969169, ECO:0000269|PubMed:9121453}.; [Isoform 3]: Potent inhibitor of type I IFN receptor activity. {ECO:0000269|PubMed:7759950}.

Native

Stable

Pure

Active protein

Recombinant protein

Human Origin

Entry Name:

INAR2_HUMAN

Gene Name:

IFNAR2 IFNABR IFNARB

Uniprot Accession:

P48551

Origin:

Homo sapiens (Human)

Protein family:

Type II cytokine receptor family

Full-length:

515

AA

Mass:

57759

Da

MLLSQNAFIFRSLNLVLMVYISLVFGISYDSPDYTDESCTFKISLRNFRSILSWELKNHSIVPTHYTLLYTIMSKPEDLKVVKNCANTTRSFCDLTDEWRSTHEAYVTVLEGFSGNTTLFSCSHNFWLAIDMSFEPPEFEIVGFTNHINVMVKFPSIVEEELQFDLSLVIEEQSEGIVKKHKPEIKGNMSGNFTYIIDKLIPNTNYCVSVYLEHSDEQAVIKSPLKCTLLPPGQESESAESAKIGGIITVFLIALVLTSTIVTLKWIGYICLRNSLPKVLNFHNFLAWPFPNLPPLEAMDMVEVIYINRKKKVWDYNYDDESDSDTEAAPRTSGGGYTMHGLTVRPLGQASATSTESQLIDPESEEEPDLPEVDVELPTMPKDSPQQLELLSGPCERRKSPLQDPFPEEDYSSTEGSGGRITFNVDLNSVFLRVLDDEDSDDLEAPLMLSSHLEEMVDPEDPDNVQSNHLLASGEGTQPTFPSPSSEGLWSEDAPSDQSDTSESDVDLGDGYIMR

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Expression systems: bacteria, yeast, insect cells, HEK & CHO mammalian cells
Purified formats: detergents, SMALPs, nanodiscs, proteoliposomes