Abstract
The analytical separation of proteins by isotachophoresis (ITP) was achieved in a short electrophoretic path and with a resolution comparable to that of isoelectric focusing by the appropriate selection of (1) a mixture of ampholytes as spacers to generate linear gradients of electrophoretic mobility and (2) the counter ions chosen to buffer the complete pH gradient generated. This ITP technique is exemplified by the analysis of plasma proteins in agarose gels. Up to 46 samples in the same gel plate were analysed. The resolution was such that at least 30 clear and discrete bands per sample could be observed after staining with Coomassie Brilliant Blue. The resolving power of ITP could be further increased for the study of a particular protein or zone by the selection of suitable spacers and counter ions.
Published Version
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