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[Separation of proteins by gradient pressurized capillary electrochromatography]
Liangjuan Zhao1, Juanjuan Zou, Xiuli Wang
1College of Life Science, Nankai University, Tianjin 300071, China. zhao9899@sina.com
Se Pu = Chinese Journal of Chromatography
|February 28, 2006
Summary
Reversed-phase gradient pressurized capillary electrochromatography (p-CEC) rapidly separates proteins like RNase A. This technique combines chromatographic partitioning and electrophoretic migration for efficient protein analysis.
Area of Science:
- Analytical Chemistry
- Biochemistry
- Separation Science
Context:
- Investigated protein separation using reversed-phase gradient pressurized capillary electrochromatography (p-CEC).
- Compared p-CEC with micro-high performance liquid chromatography (mu-HPLC).
- Utilized a 1.5 micrometer non-porous silica C18 stationary phase.
Purpose:
- To explore the potential of p-CEC for rapid and efficient protein separation.
- To study the effects of applied voltage, stationary phase, and ion-pairing agent concentration (trifluoroacetic acid, TFA) on gradient p-CEC.
- To elucidate the retention mechanism of proteins in p-CEC mode.
Summary:
- Successfully separated four proteins: RNase A, cytochrome C, lysozyme, and myoglobin using gradient p-CEC.
- Demonstrated that protein retention in p-CEC involves both chromatographic partitioning and electrophoretic migration.
- Achieved rapid separation on a new CEC instrument, Trisep 2010 GV.
Impact:
- Highlights the potential of p-CEC as a powerful tool for fast and efficient protein analysis.
- Provides insights into optimizing p-CEC parameters for protein separation.
- Offers a valuable alternative to existing chromatographic methods for protein analysis.