Table 2.

The relative concentrations of ¹⁷O and ¹⁶O spin adducts of DEPMPO/^⋅OH formed during the reaction of SOD with 89% [¹⁷O]-H₂O₂

Conditions	% of DEPMPO/⋅OH spin adducts from H2O2	% of DEPMPO/⋅OH spin adducts from H2O
Fe(II)-EDTA	100	0
WT-SOD	60  ±  2.82	40  ±  2.82
A4V	66  ±  0.47	34  ±  0.47
G93A	63  ±  0.47	37  ±  0.82

Data were normalized with respect to the ¹⁷O content in H₂¹⁷O₂ by using the formula: %DEMPMPO/^⋅OH from water = 100(%H₂¹⁷O₂ − %DEPMPO/^⋅17OH)/%H₂¹⁷O₂.