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Detection of Proteins and Sialoglycoproteins in Polyacrylamide Gels Using EosinY Stain

  • Fan Lin
  • Gary E. Wise
Protocol
  • 98 Downloads
Part of the Springer Protocols Handbooks book series (SPH)

Abstract

A rapid, sensitive, and reliable staining technique is essential in detection of proteins in polyacrylamide gels. Coomassie brilliant blue R-250 (CBB) is the stain that meets these criteria except for sensitivity; i.e., CBB staining requires relatively large amounts of proteins. It has been reported that the sensitivity for CBB stain in polyacrylamide gels is 0.1-0.5 μg/protein band (1). This problem of relatively low staining sensitivity is often circumvented by employing silver staining techniques (2-5). However, it is difficult to transfer silver stained proteins to transfer membranes unless they either are negatively stained by silver (6) or the positively silver-stained proteins are treated with 2X SDS sample buffer prior to transfer (7). In addition, sialoglycoproteins cannot be detected by CBB and thus have to be visualized by other stains, such as the periodic acid-Schiff (PAS) reagent (8), silver stains (9), or silver/Coomassie blue R-250 double staining technique (10).

Keywords

Staining Solution Staining Technique Coomassie Brilliant Blue Acetic Acid Concentration Staining Protocol 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Humana Press Inc., Totowa, NJ 2002

Authors and Affiliations

  • Fan Lin
    • 1
  • Gary E. Wise
    • 2
  1. 1.Department of PathologyTemple University HospitalPhiladelphia
  2. 2.Department of Anatomy & Cell BiologyLouisiana State University School of Veterinary MedicineBaton Rouge

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