Human IFN alpha 2b Protein
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Catalog number: 639 - abx060167-100g
Product Category: Business & Industrial > Science & Laboratory
Gentaur
Size: 100 µg
91-004
IFN alpha-2b Recombinant Protein
At least 23 different variants of IFN- alpha are known. The individual proteins have molecular masses between 19-26 kDa and consist of proteins with lengths of 156-166 and 172 amino acids. All IFN- alpha subtypes possess a common conserved sequence region between amino acid positions 115-151 while the amino-terminal ends are variable. Many IFN- alpha subtypes differ in their sequences by only one or two positions. Naturally occurring variants also include proteins that are truncated by 10 amino acids at the carboxyl-terminal end.
793.51 €
91-329
IFN alpha Recombinant Protein
The Interferon- alpha/ beta Receptor 1 (IFN- alpha/ beta R1) is a receptor which binds Type I Interferons including Interferon- alpha and - beta . It is a cell surface receptor and heteromeric receptor composed of one chain with two subunits referred to as IFNAR1 and IFNAR2. IFN- alpha/ beta R1, in association with IFN- alpha/ beta R2, is required for propagating antiviral signal transduction triggered by IFN- alpha and IFN- beta . IFN- alpha/ beta R1 interacts very weakly or not at all with type 1 interferons and does not stably interact with IFN- alpha/ beta R2. Ligands associate with IFN- alpha/ beta R2, and this complex subsequently forms a stable ternary assembly with IFN- alpha/ beta R1. IFN- alpha/ beta R1 also associates with IFN- gamma R2 even in the absence of IFN- gamma stimulation. Human IFN- alpha/ beta R1 contains a nuclear localization signal in its extracellular domain that is required for receptor translocation to the nucleus following interaction with ligand. Interferon stimulation results in an immunologic response that is especially associated with viruses.
974.85 €
91-431
IFN alpha Recombinant Protein
Interferon alpha/ beta Receptor 2 (IFN- alpha/ beta R2) is a single-pass type I membrane protein which belongs to the type II cytokine receptor family. It complexes with IFN- alpha/ beta R1 to form the signaling receptor complex for the family of alpha and beta IFN subtypes. By alternative splicing, IFN- alpha/ beta R2 can exist as a secreted soluble protein or as a type I membrane protein. IFN- alpha/ beta R2 is the principal ligand binding subunit of the receptor. Ligand binding is stabilized by the subsequent association with IFN- alpha/ beta R1, resulting in the formation of a signaling ternary receptor complex. IFNAR2 was detected in most lymphocytes, monocytes, and granulocytes, although IFNAR2 expression was higher in the monocytes and granulocytes than in the lymphocytes. Among the lymphocyte subsets, IFNAR2 showed high expression in natural killer (NK) cells and low expression in T lymphocytes. Isoform 1 and isoform 3 of IFNAR2 are directly involved in signal transduction due to their interaction with the TYR kinase, JAK1. Isoform 1 also interacts with the transcriptional factors, STAT1 and STAT2. Both forms are potent inhibitors of type I IFN activity.