title: Proton magnetic resonance studies of ribonuclease T1. Assignment of histidine-27 C2-H and C5-H proteon resonances by a photooxidation reaction.
mesh_terms: D001665:Binding Sites; D006639:Histidine; D009682:Magnetic Resonance Spectroscopy; D010084:Oxidation-Reduction; D006163:Ribonuclease T1 / Q000302:isolation & purification; D012260:Ribonucleases / Q000302:isolation & purification
chemical_list: D006639:Histidine; D012260:Ribonucleases; D006163:Ribonuclease T1