1991
Serine modulates substrate channeling in tryptophan synthase. A novel intersubunit triggering mechanism
Anderson K, Miles E, Johnson K. Serine modulates substrate channeling in tryptophan synthase. A novel intersubunit triggering mechanism. Journal Of Biological Chemistry 1991, 266: 8020-8033. PMID: 1902468, DOI: 10.1016/s0021-9258(18)92934-0.Peer-Reviewed Original ResearchConceptsIndole-3-glycerol phosphateTryptophan synthaseProtein conformationAlpha 2 beta 2 complexReaction of serineAbsence of serineBeta siteFormation of tryptophanAlpha siteSteady-state turnoverActive siteAccumulation of indoleAlpha reactionSubstitution of cysteineSubstrate channelingBeta reactionBeta subunitMetabolic intermediatesSerineAlpha subunitQuench-flowProtein fluorescenceTurnover experimentsProteinTryptophan release
1988
Evaluation of 5-enolpyruvoylshikimate-3-phosphate synthase substrate and inhibitor binding by stopped-flow and equilibrium fluorescence measurements.
Anderson K, Sikorski J, Johnson K. Evaluation of 5-enolpyruvoylshikimate-3-phosphate synthase substrate and inhibitor binding by stopped-flow and equilibrium fluorescence measurements. Biochemistry 1988, 27: 1604-10. PMID: 3284585, DOI: 10.1021/bi00405a032.Peer-Reviewed Original ResearchConceptsBinding of substratesBinary complexShikimate 3-phosphateStopped-flow fluorescence methodsDissociation constantFree enzymeGlyphosate bindingS3P bindingInhibitor bindingProtein fluorescenceKinetics of bindingTernary complexEnzymeStopped-flowFluorescence measurementsBindingFluorescence titrationSaturating concentrationsS3PEquilibrium fluorescence measurements