Figure 3

Characterization of GDO.
(A) pH optimization of GDO. GDO has optimal activity at pH 7.0. (B) Temperature sensitivity of GDO enzyme activity; optimal activity was obtained at 30 °C. (C) Salinity-dependence of GDO activity; maximum enzyme activity was observed at 12%. (D) Effects of metal salts on enzyme activity; control, without metal salt. Ni, Ni2+; Co, Co2+; Ca, Ca2+; Cu, Cu2+; Mn, Mn2+; Zn, Zn2+; Mg, Mg2+; K, K+; Fe, Fe2+.