Crystal Structures of 2-Methylisocitrate Lyase in Complex with Product and with Isocitrate Inhibitor Provide Insight into Lyase Substrate Specificity, Catalysis and Evolution
Liu, S., Lu, Z., Han, Y., Melamud, E., Dunaway-Mariano, D., Herzberg, O.(2005) Biochemistry 44: 2949-2962
- PubMed: 15723538 
- DOI: 10.1021/bi0479712
- Primary Citation of Related Structures:  
1OQF, 1XG3, 1XG4 - PubMed Abstract: 
Two crystal structures of the C123S mutant of 2-methylisocitrate lyase have been determined, one with the bound reaction products, Mg(2+)-pyruvate and succinate, and the second with a bound Mg(2+)-(2R,3S)-isocitrate inhibitor. Comparison with the structure of the wild-type enzyme in the unbound state reveals that the enzyme undergoes a conformational transition that sequesters the ligand from solvent, as previously observed for two other enzyme superfamily members, isocitrate lyase and phosphoenolpyruvate mutase ...