A Ponceau S Staining-Based Dot Blot Assay for Rapid Protein Quantification of Biological Samples.
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ABSTRACT: Despite the availability of a wide range of commercial kits, protein quantification is often unreliable, especially for tissue-derived samples, leading to uneven loading in subsequent experiments. Here we show that the widely used Bicinchoninic Acid (BCA) assay tends to underestimate protein concentrations of tissue samples. We present a Ponceau S staining-based dot-blot assay as an alternative for protein quantification. This method is simple, rapid, more reliable than the BCA assay, compatible with biological samples lysed in RIPA or 2x SDS gel-loading buffer, and also inexpensive.
SUBMITTER: Helbing DL
PROVIDER: S-EPMC8775029 | biostudies-literature |
REPOSITORIES: biostudies-literature
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