Protein A (HRP Conjugate) (#12291) Datasheet with Images Cell Signaling Technology

For Research Use Only. Not for Use in Diagnostic Procedures.

Applications:

Product Information

Product Usage Information

This product should be used in place of the secondary in the western blotting protocol.

Storage

Supplied in 136 mM NaCl, 2.6 mM KCl, 12 mM sodium phosphate (pH 7.4) dibasic, 2 mg/ml BSA, and 50% glycerol. Store at –20°C.

Specificity / Sensitivity

Species Reactivity:

All Species Expected

Source / Purification

Protein A (HRP Conjugate) is purified by gel filtration. The conjugate product is free from unconjugated protein A and HRP.

Product Description

This Cell Signaling Technology product is useful for the detection of IgG. Conjugation of horseradish peroxidase (HRP) to protein A is obtained by cross-linking the amino groups on protein A with the carbohydrate groups on HRP.

Background

Protein A exhibits high affinity for subclasses of IgG from many species (including human, rabbit, mouse, rat, and sheep) and therefore can be used for detection and/or purification of antibodies. Due to its vast array of applications, protein A is the method of choice for many preparative and analytical immunological assays (1).

Goding, J.W. (1978) J Immunol Methods 20, 241-53.

Species Reactivity

Species reactivity is determined by testing in at least one approved application (e.g., western blot).

Western Blot Buffer

IMPORTANT: For western blots, incubate membrane with diluted primary antibody in 5% w/v nonfat dry milk, 1X TBS, 0.1% Tween® 20 at 4°C with gentle shaking, overnight.

Applications Key

WB: Western Blotting

Cross-Reactivity Key

H: human M: mouse R: rat Hm: hamster Mk: monkey Vir: virus Mi: mink C: chicken Dm: D. melanogaster X: Xenopus Z: zebrafish B: bovine Dg: dog Pg: pig Sc: S. cerevisiae Ce: C. elegans Hr: horse GP: Guinea Pig Rab: rabbit All: all species expected

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