Adherence to Burgi-Dunitz stereochemical principles requires significant structural rearrangements in Schiff-base formation: insights from transaldolase complexes.
Light, S.H., Minasov, G., Duban, M.E., Anderson, W.F.(2014) Acta Crystallogr D Biol Crystallogr 70: 544-552
- PubMed: 24531488 
- DOI: 10.1107/S1399004713030666
- Primary Citation of Related Structures:  
3TE9, 3TK7, 3TKF, 3TNO, 4E0C - PubMed Abstract: 
The Bürgi-Dunitz angle (αBD) describes the trajectory of approach of a nucleophile to an electrophile. The adoption of a stereoelectronically favorable αBD can necessitate significant reactive-group repositioning over the course of bond formation. In the context of enzyme catalysis, interactions with the protein constrain substrate rotation, which could necessitate structural transformations during bond formation ...