title: DNA packaging steps in bacteriophage lambda head assembly.
mesh_terms: D000255:Adenosine Triphosphate / Q000494:pharmacology; D001426:Bacterial Proteins / Q000378:metabolism; D002499:Centrifugation, Density Gradient; D003090:Coliphages / Q000187:drug effects / Q000378:metabolism*; D004279:DNA, Viral / Q000378:metabolism*; D004926:Escherichia coli / Q000187:drug effects / Q000378:metabolism; D005796:Genes; D046911:Macromolecular Substances; D008854:Microscopy, Electron; D009154:Mutation; D013095:Spermidine / Q000494:pharmacology; D014764:Viral Proteins / Q000378:metabolism
chemical_list: D001426:Bacterial Proteins; D004279:DNA, Viral; D046911:Macromolecular Substances; D014764:Viral Proteins; D000255:Adenosine Triphosphate; D013095:Spermidine