title: Structure of the repressor-operator complex of bacteriophage 434.
abstract: The crystal structure of a specific complex between the DNA-binding domain of phage 434 repressor and a synthetic 434 operator DNA shows interactions that determine sequence-dependent affinity. The repressor recognizes its operators by its complementarity to a particular DNA conformation as well as by direct interaction with base pairs in the major groove.
mesh_terms: D001482:Base Composition; D001483:Base Sequence; D003090:Coliphages / Q000235:genetics*; D004269:DNA, Bacterial / Q000378:metabolism; D004926:Escherichia coli / Q000235:genetics*; D008958:Models, Molecular; D009690:Nucleic Acid Conformation; D009875:Operator Regions, Genetic; D011485:Protein Binding; D011487:Protein Conformation; D012097:Repressor Proteins / Q000378:metabolism*; D014157:Transcription Factors / Q000378:metabolism*; D014764:Viral Proteins / Q000378:metabolism*; D014961:X-Ray Diffraction
chemical_list: D004269:DNA, Bacterial; D012097:Repressor Proteins; D014157:Transcription Factors; D014764:Viral Proteins