1.21.99.5	cysteine stabilizes	349703	
1.21.99.5	enzyme generally unstable	349709	
1.21.99.5	enzyme insensitive towards oxygen	349707	
1.21.99.5	enzyme oxygen sensitive	349709	
1.21.99.5	enzyme slightly oxygen-sensitive	349700	
1.21.99.5	enzyme very labile during purification	349703	
1.21.99.5	ferrous ammonium sulfate stabilizes	349703	
1.21.99.5	oxygen-sensitive with half-life of approximately 50 min	349706	
1.21.99.5	purified enzyme not stable, 50% loss of activity at -30°C	349709