EC 1.1.3.21 sn-glycerol-3-phosphate:oxygen 2-oxidoreductase Recombinant. From microbial source. In 3.2 M ammonium sulphate. Specific activity: ~ 50 U/mg (37oC, pH 7.0 on DL-α-glycerophosphate) Stability: > 2 years at 4oC