リコンビナントタンパク質＿精製したリコンビナントタンパク質 » リコンビナントサイトカイン-免疫活性タンパク質 » IFN-α 1b, Human

IFN-α 1b, Human

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 at only one or two positions. Naturally occurring variants also include proteins truncated by 10 amino acids at the carboxy-terminal end.
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Product Introduction
Species Human
Protein Construction

Expressed with an N-terminal Met.

IFN-α 1b [Cys24-Glu189 (Ala137Val)]
Accession # P01562
Purity > 96% as analyzed by SDS-PAGE
> 96% as analyzed by HPLC
Endotoxin Level < 1 EU/μg of protein by LAL method
Biological Activity Fully biologically active when compared to standard. The specific activity determined by an anti-viral assay is no less than 1.0 × 108 IU/mg.
Expression System E. coli
Theoretical Molecular Weight 19.5 kDa
Formulation Lyophilized from a 0.2 μm filtered solution in PBS, pH 7.4, 4% mannitol, 1% HSA.
Reconstitution It is recommended that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Reconstitute the lyophilized powder in sterile distilled water or aqueous buffer containing 0.1% BSA to a concentration of 0.1-1.0 mg/ml.
Storage & Stability Upon receiving, this product remains stable for up to 6 months at -70°C or -20°C. Upon reconstitution, the product should be stable for up to 1 week at 4°C or up to 3 months at -20°C. Avoid repeated freeze-thaw cycles.

Background
Target Background 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 at only one or two positions. Naturally occurring variants also include proteins truncated by 10 amino acids at the carboxy-terminal end.
Synonyms Interferon-α1b; IFN-α1b

For laboratory research use only. Direct human use, including taking orally and injection and clinical use are forbidden.