Mechanisms of catalysis and allosteric regulation of yeast chorismate mutase from crystal structures.
Strater, N., Schnappauf, G., Braus, G., Lipscomb, W.N.(1997) Structure 5: 1437-1452
- PubMed: 9384560 
- DOI: https://doi.org/10.1016/s0969-2126(97)00294-3
- Primary Citation of Related Structures:  
3CSM, 4CSM, 5CSM - PubMed Abstract: 
Chorismate mutase (CM) catalyzes the Claisen rearrangement of chorismate to prephenate, notably the only known enzymatically catalyzed pericyclic reaction in primary metabolism. Structures of the enzyme in complex with an endo-oxabicyclic transition state analogue inhibitor, previously determined for Bacillus subtilis and Escherichia coli CM, provide structural insight into the enzyme mechanism. In contrast to these bacterial CMs, yeast CM is allosterically regulated in two ways: activation by tryptophan and inhibition by tyrosine. Yeast CM exists in two allosteric states, R (active) and t (inactive).
Organizational Affiliation: 
Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, MA 02138, USA.