Evidence for the Formation of an Enamine Species during Aldol and Michael-type Addition Reactions Promiscuously Catalyzed by 4-Oxalocrotonate Tautomerase.
Poddar, H., Rahimi, M., Geertsema, E.M., Thunnissen, A.M., Poelarends, G.J.(2015) Chembiochem 16: 738-741
- PubMed: 25728471 
- DOI: 10.1002/cbic.201402687
- Primary Citation of Related Structures:  
4X19, 4X1C - PubMed Abstract: 
The enzyme 4-oxalocrotonate tautomerase (4-OT), which has a catalytic N-terminal proline residue (Pro1), can promiscuously catalyze various carbon-carbon bond-forming reactions, including aldol condensation of acetaldehyde with benzaldehyde to yield cinnamaldehyde, and Michael-type addition of acetaldehyde to a wide variety of nitroalkenes to yield valuable γ-nitroaldehydes ...