Nitrocellulose filter binding studies of the interactions of Escherichia coli RNA polymerase holoenzyme with deoxyribonucleic acid restriction fragments: evidence for multiple classes of nonpromoter interactions, some of which display promoter-like properties.

Bacteriophage lambda Collodion DNA Restriction Enzymes DNA, Viral/metabolism DNA-Directed RNA Polymerases/metabolism Deoxyribonucleases, Type II Site-Specific Electrophoresis Escherichia coli/enzymology Heparin/pharmacology Operon Simian virus 40 Sodium Chloride/pharmacology T-Phages Transcription, Genetic

DNA, Viral Sodium Chloride Collodion Heparin DNA-Directed RNA Polymerases DNA Restriction Enzymes Deoxyribonucleases, Type II Site-Specific GGCC-specific type II deoxyribonucleases