title: On the specificity of ribonuclease U 2 .
mesh_terms: D001487:Basidiomycota / Q000201:enzymology*; D002384:Catalysis; D002855:Chromatography, Thin Layer; D011119:Polynucleotides; D011685:Purine Nucleotides; D012260:Ribonucleases; D013329:Structure-Activity Relationship
chemical_list: D011119:Polynucleotides; D011685:Purine Nucleotides; D012260:Ribonucleases