title: Bacteriophage T4 polyheads: crystallographic and geometrical conventions.
mesh_terms: D001665:Binding Sites; D003090:Coliphages / Q000648:ultrastructure*; D004279:DNA, Viral; D004926:Escherichia coli / Q000648:ultrastructure; D046911:Macromolecular Substances; D008433:Mathematics; D009690:Nucleic Acid Conformation; D011485:Protein Binding; D011487:Protein Conformation; D014764:Viral Proteins
chemical_list: D004279:DNA, Viral; D046911:Macromolecular Substances; D014764:Viral Proteins