ID 2.3.1.131 DE glucarate O-hydroxycinnamoyltransferase. CA D-glucarate + (E)-sinapoyl-CoA = 2-O-[(E)-sinapoyl]-D-glucarate + CoA. CC -!- 4-coumaroyl-CoA, feruloyl-CoA and caffeoyl-CoA can also act as CC donors, more slowly. //