Thermo Fisher Scientific Avidin Polyclonal Antibody

Applications

Tested Dilution

Publications

Western Blot (WB)

1:1,000

-

Immunohistochemistry (IHC)

1:1,000-1:5,000

-

ELISA (ELISA)

1:2,000-1:20,000

-

Immunoprecipitation (IP)

1:1,000-1:10,000

-

Product Specifications

Species Reactivity

Chicken

Host/Isotype

Rabbit / IgG

Class

Polyclonal

Type

Antibody

Immunogen

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Conjugate

Unconjugated Unconjugated Unconjugated

Form

Lyophilized

Concentration

1 mg/mL

Purification

Ion-exchange chromatography

Storage buffer

0.02M potassium phosphate, pH 7.2, with 0.15M NaCl

Contains

0.01% sodium azide

Storage conditions

Store at 4°C short term. For long term storage, store at -20°C, avoiding freeze/thaw cycles.

Shipping conditions

Ambient (domestic); Wet ice (international)

Product Specific Information

Store vial at 4° C prior to restoration. For extended storage aliquot contents and freeze at -20° C or below. Avoid cycles of freezing and thawing. Centrifuge product if not completely clear after standing at room temperature. This product is stable for several weeks at 4° C as an undiluted liquid. Dilute only prior to immediate use.

Anti-AVIDIN is an IgG fraction antibody purified from monospecific antiserum by a multi-step process which includes delipidation, salt fractionation and ion exchange chromatography followed by extensive dialysis against the buffer stated above. Assay by immunoelectrophoresis resulted in a single precipitin arc against anti-Rabbit Serum as well as purified and partially purified Avidin [Hen Egg White]. No cross reactivity occurs against Streptavidin.

Target Information

Avidin from chicken egg whites is a glycoprotein that effectively binds biotin, a tag that is frequently used to tag antibodies and other probes for immunodetection methods. This protein contains four identical subunits having a combined molecular mass of 67,000 to 68,000 daltons. Each subunit binds one molecule of biotin, and studies have shown that tryptophan and lysine are involved in the binding site for biotin. The sequencing of the subunit indicates it consists of 128 amino acids. Avidin has an isoelectric point of 10-10.5 and is very soluble in water and salt solutions. Avidin is stable over a wide range of pH values and temperatures. Extensive chemical modification has little effect on the activity of avidin, making it useful for detection and protein purification. Pure avidin is a key component in certain immunohistochemistry (IHC) methods. Alkaline phosphatase (AP) and horseradish peroxidase (HRP) conjugates of avidin are useful for Western blotting or ELISA detection with appropriate enzyme substrates.

For Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.