title: Operator sequences of bacteriophages P22 and 21.
mesh_terms: D010582:Bacteriophage lambda / Q000235:genetics*; D001483:Base Sequence; D001665:Binding Sites; D004279:DNA, Viral; D003854:Deoxyribonucleotides / Q000032:analysis; D004591:Electrophoresis, Polyacrylamide Gel; D009876:Operon; D011485:Protein Binding; D012097:Repressor Proteins; D012483:Salmonella Phages / Q000235:genetics*
chemical_list: D004279:DNA, Viral; D003854:Deoxyribonucleotides; D012097:Repressor Proteins