Capillary electrophoresis (CE) analysis of human serum proteins and apolipoproteins is described and compared with sodium dodecyl sulfate-polyacrylamide gel electrophoresis and cellulose acetate membrane electrophoresis. Under optimized CE conditions apolipoproteins I could be determined directly in the serum and quantitated with a linear correlation between peak area and concentration up to a concentration of 100 mg/dL.
Comparison of high performance liquid chromatograms (HPLC) with capillary electrophoresis shows the latter to be superior in many cases owing to rapid separation, high resolution and high sensitivity. This is demonstrated with two examples (i) the isolation of natural peptides from bovine tissue and (ii) characterization of a synthetic peptide mixture with the natural sequence (fragment) of the human immunodeficiency virus (HIV) transmembrane glycoprotein gp 41 env.
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