title: Copies of proteins L7 and L12 and heterogeneity of the large subunit of Escherichia coli ribosome.
mesh_terms: D000085:Acetates; D000409:Alanine / Q000378:metabolism; D000596:Amino Acids / Q000032:analysis; D001665:Binding Sites; D004591:Electrophoresis, Polyacrylamide Gel; D004926:Escherichia coli / Q000032:analysis* / Q000378:metabolism / Q000648:ultrastructure; D007930:Leucine / Q000378:metabolism; D011485:Protein Binding; D012269:Ribosomal Proteins / Q000032:analysis*; D012270:Ribosomes / Q000032:analysis / Q000378:metabolism / Q000648:ultrastructure
chemical_list: D000085:Acetates; D000596:Amino Acids; D012269:Ribosomal Proteins; D007930:Leucine; D000409:Alanine