PRODUCT NAME

Anti-Mouse IFNAR1 In Vivo Antibody - Ultra Low Endotoxin (MAR1-5A3)

SPECIES REACTIVITY

Mouse

HOST

Mouse

SPECIFICITY

Anti-IFNAR1 In Vivo Antibody - Ultra Low Endotoxin (MAR1-5A3) recognizes the extracellular domain of the IFNAR1 subunit of the mouse IFN-alpha / beta receptor.

PURIFICATION METHOD

ANTIGEN DISTRIBUTION

IFNAR1 and IFNAR2 are coexpressed on nearly all cells.

IMMUNOGEN

This antibody was produced by In vivo genetic immunization of IFNAR1 knockout mice with a plasmid encoding the extracellular domain of murine IFNAR1.

CONCENTRATION

FORMULATION

0.01 M phosphate buffered saline (PBS) pH 7.2, 150 mM NaCl with no carrier protein, potassium or preservatives added.

PURITY

>98% by SDS-PAGE and HPLC

ENDOTOXIN

≤ 0.75 EU/mg as determined by the LAL method

AGGRIGATION

Aggregation level ≤ 1%

STORAGE CONDITION

anti-IFNAR1 In Vivo Antibody - Ultra Low Endotoxin (MAR1-5A3) is stable for at least four (4) weeks when stored sterile at 2-8°C. For long term storage aseptically aliquot in working volumes without diluting and store at –80°C in a manual defrost freezer. Avoid Repeated Freeze Thaw Cycles. NOTE: Do not freeze as this antibody at -20°C as this clone will sometimes precipitate over long period of time.

TARGET

IFNAR1

CLONE

MAR1-5A3

SYNONYMS

BACKGROUND

The antibody when prepared specifically for In vivo functional assays blocks type I IFN receptor signaling both In vitro and In vivo without depleting IFNAR1 bearing cells. This antibody was produced by In vivo genetic immunization of IFNAR1 knockout mice with a plasmid encoding the extracellular domain of murine IFNAR1. IFNAR1 and IFNAR2 are coexpressed on nearly all cells and make up the heterodimeric receptor that binds all type I IFNs (IFN alpha and beta). Type I IFNs are a family of cytokines that have been shown to promote anti-viral, anti-microbial, anti-tumor and autoimmune responses In vivo.

UNIPROT

P33896

PATHOGEN TEST

We use the IMPACT test generated by IDEXX Laboratories to guarantee our Ultra Low Endotoxin antibodies are pathogen free. Our mouse antibodies are tested for:
Mycoplasma spp.
Mycoplasma pulmonis
Sendai virus
Mouse hepatitis virus
Pneumonia virus of mice
Minute virus of mice
Mouse parvovirus (MPV1-5)
Theiler's murine encephalomyelitis virus
Murine norovirus
Reovirus 3
Mouse rotavirus
Ectromelia virus
Lymphocytic choriomeningitis virus
Polyoma virus
Lactate dehydrogenase-elevating virus
Mouse adenovirus (MAD1, MAD2)
Mouse cytomegalovirus
K virus
Mouse thymic virus
Hantaan virus
Corynebacterium bovis
Corynebacterium spp. (HAC2)

APPLICATIONS

Immunoprecipitation, Western Blot, Blocking, Functional Assays, Flow Cytometry, ELISA

APPLICATION NOTES

Functional Assay: Clone MAR1-5A3 has a short half-life, basically because every cell expresses the IFNAR1 receptor and the receptor recycles very rapidly. And, if you want to block function in vivo, you need to be sure that all of the receptors are blocked continually in all compartments. Therefore, you need a large in vivo loading dose (2.5 mg/mouse) to saturate all the binding sites in vivo and then maintain a high enough level to keep them saturated. For in vivo blocking studies we recommend give a loading dose of 2.5 mg/mouse and follow with a weekly dose of 0.5 mg/mouse. The half-live following a 2.5 mg loading dose is about 5 days. [However, if you only inject a low dose of 250 micrograms, then the half life is 1.5 days – because you haven’t saturated the mouse].
Each investigator should determine their own optimal working dilution for specific applications.

USAGE

Products are for research use only. Not for use in diagnostic or therapeutic procedures.