Transcription of Coomassie Blue Staining - Bioscience
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Coomassie Blue Staining - Bioscience
Date: Version Contact: Coomassie blue Staining Page 1 of 3 BIOTEKNIIKAN KESKUS BIOTEKNIKCENTRUM CENTRE FOR BIOTECHNOLOGY Proteomics Coomassie blue Staining 1. Principle Coomassie blue R250 is an anionic dye that stoichiometrically binds to proteins, and is therefore preferable to silver Staining methods for estimation of relative abundance of proteins useful for differential expression analysis of (2-DE) gels. Although 50-fold less sensitive than silver Staining , Coomassie blue Staining is a relatively simple and more quantitative method. The protocol involves soaking the gel in a dye solution. Dye that is not bound to protein diffuses out of the gel during destain steps.
If you stain proteins for mass spectrometric identification, use always clean plastic dishes to avoid protein (e.g. BSA or keratin) contamination. • (When staining small proteins (Mr <10 000 Da), the gel can be first fixed in a solution containing …
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