title: Difference spectral studies on the interactions between ribonuclease T and its substrate analogues.
mesh_terms: D000225:Adenine; D055598:Chemical Phenomena; D002621:Chemistry; D006147:Guanine; D006863:Hydrogen-Ion Concentration; D012260:Ribonucleases; D013053:Spectrophotometry
chemical_list: D006147:Guanine; D012260:Ribonucleases; D000225:Adenine