title: Purification and physical characterization of tyrosyl ribonucleic acid synthetases from Escherichia coli and Bacillus subtilis.
mesh_terms: D001412:Bacillus subtilis / Q000201:enzymology*; D004586:Electrophoresis; D004926:Escherichia coli / Q000201:enzymology*; D007106:Immune Sera; D005779:Immunodiffusion; D008025:Ligases / Q000032:analysis*; D008970:Molecular Weight; D012329:RNA, Bacterial; D014443:Tyrosine; D014461:Ultracentrifugation
chemical_list: D007106:Immune Sera; D012329:RNA, Bacterial; D014443:Tyrosine; D008025:Ligases