title: Change of substrate specificity by polyamines of ribonucleases which hydrolyze ribonucleic acid at linkages attached to pyrimidine nucleotides.
mesh_terms: D000818:Animals; D001230:Aspergillus / Q000201:enzymology; D002417:Cattle; D006736:Horses; D007700:Kinetics; D010179:Pancreas / Q000201:enzymology; D011073:Polyamines / Q000494:pharmacology*; D011700:Putrescine / Q000494:pharmacology; D011743:Pyrimidines / Q000032:analysis; D012260:Ribonucleases / Q000378:metabolism*; D013045:Species Specificity; D013095:Spermidine / Q000494:pharmacology; D013096:Spermine / Q000494:pharmacology; D013329:Structure-Activity Relationship; D013363:Submandibular Gland / Q000201:enzymology
chemical_list: D011073:Polyamines; D011743:Pyrimidines; D013096:Spermine; D012260:Ribonucleases; D013095:Spermidine; D011700:Putrescine