Abstract

The physical and enzymic properties of ascorbate oxidase kept in saturated ammonium sulphate solution at 4° were examined before and after 10 months storage. There were no significant changes in behaviour on sodium dodecyl sulphate gels, in absorbtion spectra, circular dichroic spectra or EPR spectra during this time, nor in specific enzyme activity or K m . Such stored preparations are suitable for analytical examination in distant laboratories and possibly have commercial uses.

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