Reaction: sinapoyl-CoA + 2-hydroxymalonate = CoA + sinapoyltartronate
For diagram click here.
sinapic acid = 4-hydroxy-3,5-dimethoxycinnamic acid
tartonic acid = 2-hydroxymalonic acid
Other name(s): tartronate sinapoyltransferase; hydroxycinnamoyl-coenzyme-A:tartronate hydroxycinnamoyltransferase
Systematic name: sinapoyl-CoA:2-hydroxymalonate O-(hydroxycinnamoyl)transferase
Comments: 4-Coumaroyl-CoA (4-hydroxycinnamoyl-CoA), caffeoyl-CoA (3,4-dihydroxycinnamoyl-CoA) and feruloyl-CoA (4-hydroxy-3-methoxycinnamoyl-CoA) can also act as donors for the enzyme from the mung bean (Vigna radiata).
Links to other databases: BRENDA, EXPASY, KEGG, Metacyc, CAS registry number: 102484-57-1
1. Strack, D., Ruhoff, R. and Gräwe, W. Hydroxycinnamoyl-Coenzyme-A-tartronate hydroxycinnamoyltransferase in protein preparations from mung bean. Phytochemistry 25 (1986) 833-837.