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Cell Signaling Technology

Orders: 877-616-CELL (2355) [email protected]

Support: 877-678-TECH (8324)

Web: [email protected] cellsignal.com

3 Trask LaneDanversMassachusetts01923USA
For Research Use Only. Not for Use in Diagnostic Procedures.
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Product Information

Product Usage Information

1. Following protein electrotransfer, rinse membrane briefly in ddH2O to remove any detergent that may inhibit staining.

2. Incubate membrane in Ponceau S Staining Solution for 5-10 minutes at room temperature.

3. Wash membrane in ddH2O until distinct reddish-pink protein bands are visible (1-5 min).

4. If desired, mark proteins with waterproof ink or a pencil. Alternatively, a photograph of the stained membrane can also be taken.

5. Wash membrane in 1X TBS-T several times for 5 min at room temperature until protein bands are no longer visible.

6. Proceed with blocking step of Western blot procedure.

Storage

Store at room temperature. This product is stable for 12 months. Do not dilute or aliquot.

Product Description

Ponceau S Staining Solution is supplied as ready to use. This product is recommended for rapid and reversible protein staining on nitrocellulose or PVDF membranes. This staining technique is often utilized to confirm protein electrotransfer in Western blotting assays prior to antibody-based detection.

Background

Ponceau S is a negatively charged, red colored stain which binds to positively charged amino groups and non-polar regions of proteins. It has a detection limit of around 250 nanograms of protein following SDS-PAGE and electrotransfer to nitrocellulose membranes (1).

  1. Salinovich, O. and Montelaro, R.C. (1986) Anal Biochem 156, 341-7.

Species Reactivity

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

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

Trademarks and Patents

Cell Signaling Technology is a trademark of Cell Signaling Technology, Inc.
All other trademarks are the property of their respective owners. Visit cellsignal.com/trademarks for more information.

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