Electron Spin Resonance SpectroscopyLigandsVisual FieldsElectromagnetic FieldsCD40 LigandFas Ligand ProteinMagnetic FieldsProtein BindingBinding SitesVisual Field TestsRANK LigandModels, MolecularMolecular Sequence DataAmino Acid SequenceSignal TransductionMembrane GlycoproteinsCD30 LigandTNF-Related Apoptosis-Inducing LigandProtein ConformationOX40 LigandKinetics