title: A phage repressor-operator complex at 7 A resolution.
abstract: The crystal structure of a complex between the DNA-binding domain of phage 434 repressor and a synthetic 434 operator shows that the protein, very similar in conformation to gamma repressor, binds to B-form DNA with the second alpha-helix of a helix-turn-helix motif lying in the major groove.
mesh_terms: D001435:Bacteriophages / Q000235:genetics*; D004279:DNA, Viral; D009690:Nucleic Acid Conformation; D009876:Operon; D011487:Protein Conformation; D012097:Repressor Proteins; D014157:Transcription Factors; D014961:X-Ray Diffraction
chemical_list: D004279:DNA, Viral; D012097:Repressor Proteins; D014157:Transcription Factors