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Separation of hexokinase activity using different hydrophobic interaction supports
P Ceccaroli1, P Cardoni, M Buffalini
1Istituto di Chimica Biologica Giorgio Fornaini, Università degli Studi di Urbino, Italy.
Journal of Chromatography. B, Biomedical Sciences and Applications
|February 4, 1998
Summary
Toyopearl Phenyl 650S is the best medium for separating hexokinase enzyme forms using hydrophobic interaction chromatography (HIC). Ammonium sulfate is the optimal salt for this protein separation method.
Area of Science:
- Biochemistry
- Chromatography
- Enzymology
Background:
- Hydrophobic interaction chromatography (HIC) is a common technique for protein and peptide separation.
- Elution typically involves descending salt gradients, with or without detergents.
Purpose of the Study:
- To compare different hydrophobic interaction chromatographic media for separating hexokinase enzyme forms.
- To determine optimal conditions for hexokinase separation using HIC.
Main Methods:
- Tested Toyopearl Phenyl 650S, Ether 650S, and Butyl 650S media.
- Evaluated effects of various salts, focusing on antichaotropic salts like ammonium sulfate.
- Investigated sample loading capacity and enzyme activity recovery.
Main Results:
- Toyopearl Phenyl 650S provided the best separation of hexokinase forms, likely due to its intermediate hydrophobicity.
- Ammonium sulfate was identified as the most suitable salt for separating hexokinase sub-types.
- Enzyme activity recovery ranged from 60% to 90%.
Conclusions:
- Toyopearl Phenyl 650S is highly effective for separating multiple hexokinase forms.
- This method is applicable to enzymes from diverse mammalian and fungal tissues.
- Optimized HIC conditions enhance enzyme separation efficiency and recovery.