Chemistry, OrganicPhosphinesAlkadienesCatalysisStereoisomerismBiocatalysisKineticsCatalytic DomainModels, MolecularSubstrate SpecificityBinding SitesCrystallography, X-RayMutagenesis, Site-DirectedMolecular Sequence DataAmino Acid SequenceProtein ConformationEscherichia coliModels, ChemicalHydrogen-Ion ConcentrationRNA, CatalyticHydrolysisHistidineMolecular StructureProtein Structure, Tertiary