title: Plasmid R6K DNA replication. II. Direct nucleotide sequence repeats are required for an active gamma-origin.
mesh_terms: D001482:Base Composition; D001483:Base Sequence; D004261:DNA Replication; D004251:DNA Transposable Elements; D003854:Deoxyribonucleotides / Q000032:analysis; D004926:Escherichia coli / Q000235:genetics; D009154:Mutation; D011815:R Factors; D012091:Repetitive Sequences, Nucleic Acid; D014169:Transformation, Bacterial
chemical_list: D004251:DNA Transposable Elements; D003854:Deoxyribonucleotides