Kit de tinción con plata Pierce™
Kit de tinción con plata Pierce™
Thermo Scientific™

Kit de tinción con plata Pierce™

The Pierce Silver Stain Kit is a rapid, ultra-sensitive, and versatile silver stain system for protein detection in polyacrylamide gels,Más información
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Número de catálogoCantidad
246121 L
Número de catálogo 24612
Precio (MXN)
-
Cantidad:
1 L
Pedido a granel o personalizado

The Pierce Silver Stain Kit is a rapid, ultra-sensitive, and versatile silver stain system for protein detection in polyacrylamide gels, yielding consistent and reliable results. It is a metallic silver (Ag) protein stain that yields a remarkably clear and uniform gel background. In standard mini gels, proteins are detectable at greater than 0.25 ng per band or spot. The protocol has been optimized for flexibility by allowing short or overnight gel fixation and staining steps without affecting staining performance (sensitivity or clarity). A short (one-minute) sensitization step, performed after gel fixation, yields results that are free of the characteristically dark or blotchy backgrounds often seen with homemade or other commercially available silver stains. This feature is beneficial when performing densitometric analysis of silver stained gels.

Features:

  • Sensitivity—detect proteins at 0.25 ng
  • Protocol—gel staining can be performed within 5 min to 20 hrs, depending on desired sensitivity
  • Gel-compatibility—staining performance is very good with a variety of commercial precast mini-gels and SDS-PAGE buffer-systems
  • Workflow-compatible—mild chemical formulation ensures compatibility with mass spectrometry, sequencing, and other downstream procedures that depend on destaining and protein recovery

Silver staining methods generally use either glutaraldehyde or formaldehyde, which cause some covalent crosslinking of protein to each other. To the extent that this crosslinking occurs, extraction or elution of protein from the gel will be inhibited. Pierce Silver Stain uses formaldehyde in the stain and developer working solutions, but the concentration is low enough that irreversible protein crosslinking is minimized.

Para uso exclusivo en investigación. No apto para uso en procedimientos diagnósticos.

Especificaciones
Ubicación de detecciónDetección en gel
Método de detecciónColorimétrico
Línea de productosPierce
Tipo de productoKit de tinción
Cantidad1 L
Molécula dianaproteína
Etiqueta o tintePlata
Unit SizeEach
Contenido y almacenamiento
Suficiente para: 20 mini geles (SDS-PAGE)
• Sensibilizador de tinción con plata, 2 ml
• Tinción con plata, 500 ml
• Potenciador de tinción con plata, 25 ml
• Revelador de tinción con plata, 500 ml

Almacenar a temperatura ambiente.

Preguntas frecuentes

Can nucleic acids be detected with the Thermo Scientific Silver Stain Kit?

Yes. References in the literature and molecular biology protocols indicate that nucleic acids can be detected in polyacrylamide gels with silver stains of this type.

Find additional tips, troubleshooting help, and resources within our Protein Assays and Analysis Support Center.

Can the bands be removed and analyzed by mass spectrometry following staining when using the Thermo Scientific Silver Stain Kit?

Yes. See Tech Tip: Process Stained Polyacrylamide Gels for Mass Spectrometry (https://assets.thermofisher.com/TFS-Assets/LSG/Application-Notes/TR0050-Stained-gels-for-MS.pdf). Alternatively, use our Thermo Scientific Silver Stain for MS (Cat No. 24600), which is the same silver stain kit but also includes destaining reagents and a protocol optimized for maximum protein recovery.

Find additional tips, troubleshooting help, and resources within our Protein Assays and Analysis Support Center.

What reagents and factors affect silver staining performance when using the Thermo Scientific Silver Stain Kit?

SDS, glycine, amines and phosphates interfere with the staining method; this is why initial wash and fixing steps are necessary. Silver staining is also sensitive to pH conditions, chelators (sequester silver), and strong oxidants or reductants. To avoid these contaminants, use ultrapure water and clean equipment (avoid metal utensils), and avoid touching the gel except at the edges. Prepare working solutions of stain, sensitizer and developer immediately before use.

Find additional tips, troubleshooting help, and resources within our Protein Assays and Analysis Support Center.

How critical are the incubation times of other steps in the protocol for the Thermo Scientific Silver Stain Kit?

The 1 minute sensitization and 2 x 1 minute water wash steps are important for optimum stain performance. Development time (2-3 minutes) is also critical, and stop solution must be added as soon as desired development occurs.

Find additional tips, troubleshooting help, and resources within our Protein Assays and Analysis Support Center.

How does Thermo Scientific Silver Stain Kit work?

The gel is washed and fixed to remove electrophoresis buffer salts. The silver stain is added, releasing silver ions that interact with the proteins. The developer is then added causing the protein bands to darken as the bound silver reduces. The color development is stopped by lowering the pH with acetic acid.

Find additional tips, troubleshooting help, and resources within our Protein Assays and Analysis Support Center.