Maly IP, Nitsch C. SDS disc electrophoresis of proteins in homogeneous, low-concentrated polyacrylamide gels.
Electrophoresis 2007;
28:1508-13. [PMID:
17427254 DOI:
10.1002/elps.200600688]
[Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
In the attempt to separate in a single gel run low- and high-molecular-weight proteins, we present here a multiphasic buffer system designed for this purpose. It avoids the continuous stacking of SDS as it occurs in the 'classical' SDS-PAGE. The system allows complete stacking and destacking of proteins in the 3.5-250 kDa range at acrylamide concentrations as low as 4.5% T (total acrylamide concentration in %) and 2.6% C (degree of cross-linking in %). Taurine is used as the trailing ion in the cathode buffer and in the resolving zone of the gel, and two different counterions (Tris and imidazole) in the stacking zone. The gel system is easy to prepare and, due to the very low acrylamide concentrations, it is ideal for analytical as well as for preparative tasks.
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