1.97.1.9 Ag+ 70% inhibition at 1 mM 75 1.97.1.9 Ca2+ about 20% inhibition at 1 mM 15 1.97.1.9 EDTA inhibits the enzymatic reducing activity slightly, addition of Mo2+ and Zn2+ to the reaction mixture eliminates the EDTA inhibitory effect 21 1.97.1.9 Hg2+ complete inhibition at 1 mM 33 1.97.1.9 Mn2+ 35% inhibition at 1 mM 11 1.97.1.9 additional information no inhibition by nitrate 2 1.97.1.9 additional information no inhibition by sodium azide 2 1.97.1.9 N-ethyl maleimide complete inhibition 21252 1.97.1.9 NaN3 60% inhibition at 1 mM 238 1.97.1.9 Pb2+ 45% inhibition at 1 mM 139 1.97.1.9 selenate mixed-type inhibition 2162 1.97.1.9 thiocyanate mixed-type inhibition 931 1.97.1.9 tungstate highly inhibitory 1989 1.97.1.9 tungstate in vitro and in vivo 1989 1.97.1.9 tungstate - 1989 1.97.1.9 tungstate SER isolated from periplasmic fractions from cells grown on 1 mM tungstate display selenate reductase activities with a 20fold reduction in Vmax and a 23fold increase in substrate binding affinity. The thermo-stability and pH dependence of tungsten-SER is shown to be similar to that observed for molybdenum-SER 1989 1.97.1.9 Zn2+ 30% inhibition at 1 mM 14