ID 2.5.1.159 DE hapalindole G dimethylallyltransferase. CA (1) hapalindole G + dimethylallyl diphosphate = ambiguine A + CA diphosphate. CA (2) hapalindole U + dimethylallyl diphosphate + H(+) = ambiguine H + CA diphosphate. CC -!- Requires Mg(2+). CC -!- The enzyme, characterized from the cyanobacterium Fischerella ambigua CC UTEX 1903, is involved in the biosynthesis of hapalindole-type CC alkaloids. DR V5TDY7, AMBP3_FISAU; //