Invitrogen™ IFN beta Polyclonal Antibody

Catalog No.	Quantity
PI324001	2x10^4 units

Catalog No. PI324001 Supplier Invitrogen™ Supplier No. 324001

Description

Rabbit Polyclonal Antibody

Specificity: Neutralizes mouse interferon beta. Activity: 1.55x10^6 NU/mL. Interferon was titrated with the use of the cytopathic effect inhibition assay using L929 cells with EMCV, where 2.5 unit/mL of interferon was necessary to produce an endpoint of 50%. One neutralization unit is defined as the amount of serum required to neutralize one unit of mouse IFN beta to an endpoint of 50%. For retention of full activity, do not store above -70°C. Packaged by and distributed for PBL Assay Science.

Type I Interferons (IFN-alpha/beta) are produced primarily in response to viral infection by Natural IFN-producing cells (IPCs) as part of the host immune response. IFNs can also inhibit the development of tumors. IFN-beta binding results in the activation of the tyrosine kinases Jak1 and Tyk2, phosphorylation of members of the STAT family of transcription factors, and the transcription and expression of the immune response genes. More recently, several members of the toll-like receptor (TLR) family were found to stimulate the production IFN-beta. IFN-beta is currently used clinically for treatment of tumors, infections and multiple sclerosis.

Specifications

• Antigen: IFN beta
• Applications: Neutralization
• Classification: Polyclonal
• Concentration: Conc. Not Determined
• Conjugate: Unconjugated
• Formulation: Whole serum, PBS with no preservative
• Gene: Ifnb1
• Gene Accession No.: P01575
• Gene Alias: Fibroblast interferon; Ifb; IFF; IFN b; IFN β; IFNB; Ifnb1; IFNbeta; IFN-beta; IFNβ; Interferon; Interferon b; Interferon beta; interferon beta 1; interferon beta 1, fibroblast; interferon beta protein; interferon, beta 1; interferon, beta 1, fibroblast; interferon-beta; RP11-113D19.1
• Gene Symbols: Ifnb1
• Host Species: Rabbit
• Immunogen: Recombinant mouse interferon beta.
• Quantity: 2x10^4 units
• Regulatory Status: RUO
• Primary or Secondary: Primary
• Gene ID (Entrez): 15977
• Target Species: Mouse
• Content And Storage: -80°C, Avoid Freeze/Thaw Cycles
• Product Type: Antibody
• Form: Liquid
• Isotype: IgG

Frequently Asked Questions (FAQs)

The antibody I purchased from you says ''concentration not determined'' on the product label and on the product page. How do I determine the concentration?

Some antibodies are provided in non-purified formats, such as ascites fluid, tissue culture supernatant, or whole serum. These formats contain multiple proteins, which can interfere with accurate protein quantification. Traditional methods like A280 measurement or protein assays such as BCA quantify total protein but do not provide a specific concentration for the antibody in question.

Literature, such as "Antibodies" by Harlow & Lane (1988) (https://antibodiesmanual.org/index.php) (Table 8.2 - Storing and Purifying Antibodies), suggests approximate concentrations of antibodies in these solutions, as shown below. However, please note that these are rough estimates, and actual concentrations can vary based on several factors.

Serum
Total antibody concentration: 10 mg/mL
Specific antibody concentration: 0.1 to 1 mg/mL (a maximum of 10% of the antibody population is expected to be the specific antibody of interest)

Tissue Culture Supernatant (10% FBS)
Total antibody concentration: 1 mg/mL
Specific antibody concentration: 0.05 mg/mL

Tissue Culture Supernatant (serum-free)
Total antibody concentration: 0.01 to 0.05 mg/mL
Specific antibody concentration: 0.01 to 0.05 mg/mL

Ascites
Total antibody concentration: 1 to 10 mg/mL
Specific antibody concentration: 0.9 to 9 mg/mL