DNA--protein complexes of delta-mediated transfer systems.

Ampicillin/pharmacology Bacterial Proteins/metabolism Binding Sites Cell Division Centrifugation, Density Gradient DNA, Bacterial/metabolism Escherichia coli/drug effects,metabolism Extrachromosomal Inheritance Macromolecular Substances Molecular Weight Mutation Nucleic Acid Conformation Penicillin Resistance Protein Binding Protein Conformation Species Specificity Streptomycin/pharmacology Sulfonamides/pharmacology Tetracycline/pharmacology Thymidine/metabolism Tritium

Bacterial Proteins DNA, Bacterial Macromolecular Substances Sulfonamides Tritium Ampicillin Tetracycline Thymidine Streptomycin