1.13.11.60	8R-dioxygenase is unstable during purification. It can be stabilized by glutathione, glutathione peroxidase and ethylenediaminetetraacetic acid	285249	
1.13.11.60	repeated freezing and thawing, particularly of dilute enzyme solutions, inactivates the enzyme	285243	
1.13.11.60	the enzyme is quite unstable at the early steps of purification, but active fractions from anion-exchange chromatography can be kept for 1 week on ice with only a small loss of enzyme activity	285243