title: 50-S ribosomal proteins. Purification and partial characterization of two acidic proteins, A 1 and A 2, isolated from 50-S ribosomes of Escherichia coli.
mesh_terms: D000409:Alanine; D000596:Amino Acids / Q000032:analysis; D001322:Autoanalysis; D001426:Bacterial Proteins / Q000032:analysis / Q000302:isolation & purification*; D002848:Chromatography, DEAE-Cellulose; D003545:Cysteine; D004586:Electrophoresis; D004926:Escherichia coli / Q000032:analysis; D006639:Histidine; D007525:Isoelectric Focusing; D008970:Molecular Weight; D012270:Ribosomes / Q000032:analysis*; D012967:Sodium Dodecyl Sulfate; D014364:Tryptophan; D014443:Tyrosine; D014461:Ultracentrifugation
chemical_list: D000596:Amino Acids; D001426:Bacterial Proteins; D012967:Sodium Dodecyl Sulfate; D014443:Tyrosine; D006639:Histidine; D014364:Tryptophan; D003545:Cysteine; D000409:Alanine