title: Measurement of distance between fluorescent amino acid residues and metal ion binding sites. Quantitation of energy transfer between tryptophan and terbium(III) or europium(III) in thermolysin.
mesh_terms: D001665:Binding Sites; D004735:Energy Transfer; D005063:Europium; D011485:Protein Binding; D011487:Protein Conformation; D013050:Spectrometry, Fluorescence; D013725:Terbium; D013820:Thermolysin; D014364:Tryptophan / Q000032:analysis*
chemical_list: D013725:Terbium; D005063:Europium; D014364:Tryptophan; D013820:Thermolysin