ID 2.3.1.106 DE tartronate O-hydroxycinnamoyltransferase. AN hydroxycinnamoyl-coenzyme-A:tartronate hydroxycinnamoyltransferase. AN tartronate sinapoyltransferase. CA (E)-sinapoyl-CoA + hydroxymalonate = (E)-sinapoyltartronate + CoA. CC -!- 4-Coumaroyl-CoA (4-hydroxycinnamoyl-CoA), caffeoyl-CoA (3,4- CC dihydroxycinnamoyl-CoA) and feruloyl-CoA (4-hydroxy-3- CC methoxycinnamoyl-CoA) can also act as donors for the enzyme from the CC mung bean (Vigna radiata). //