Rupprecht KR, Lang EZ, Gregory SD, Bergsma JM, Rae TD, Fishpaugh JR. A precise spectrophotometric method for measuring sodium dodecyl sulfate concentration.
Anal Biochem 2015;
486:78-80. [PMID:
26150094 DOI:
10.1016/j.ab.2015.06.013]
[Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2015] [Revised: 05/15/2015] [Accepted: 06/06/2015] [Indexed: 10/23/2022]
Abstract
Sodium dodecyl sulfate (SDS) is used to denature and solubilize proteins, especially membrane and other hydrophobic proteins. A quantitative method to determine the concentration of SDS using the dye Stains-All is known. However, this method lacks the accuracy and reproducibility necessary for use with protein solutions where SDS concentration is a critical factor, so we modified this method after examining multiple parameters (solvent, pH, buffers, and light exposure). The improved method is simple to implement, robust, accurate, and (most important) precise.
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