title: Resolution of tryptophan phosphorescence from multiple sites in proteins using optical detection of magnetic resonance.
mesh_terms: D001665:Binding Sites; D004578:Electron Spin Resonance Spectroscopy; D007211:Indoles; D008163:Luminescent Measurements; D008722:Methods; D009113:Muramidase; D011485:Protein Binding; D014364:Tryptophan; D014961:X-Ray Diffraction
chemical_list: D007211:Indoles; D014364:Tryptophan; D009113:Muramidase