ID 1.20.4.2 DE methylarsonate reductase. AN MMA(V) reductase. CA 2 glutathione + H(+) + methylarsonate = glutathione disulfide + H2O + CA methylarsonous acid. CC -!- The product, methylarsonite, is biologically methylated by CC EC 2.1.1.137 to form cacodylic acid. CC -!- Formerly EC 1.97.1.7. DR P34345, GSTO1_CAEEL; P78417, GSTO1_HUMAN; O09131, GSTO1_MOUSE; DR Q9N1F5, GSTO1_PIG ; Q9Z339, GSTO1_RAT ; A8XT16, GSTO2_CAEBR; DR P34277, GSTO2_CAEEL; Q9H4Y5, GSTO2_HUMAN; Q8K2Q2, GSTO2_MOUSE; DR Q6AXV9, GSTO2_RAT ; P81124, GSTO_APLCA ; //