Transcription of the early region of bacteriophage T7: specificity and selectivity in the in vitro initiation of RNA synthesis.

Adenosine Triphosphate/metabolism Carbon Radioisotopes Chromosome Mapping Coliphages/metabolism DNA, Viral DNA-Directed RNA Polymerases Electrophoresis, Polyacrylamide Gel Enzyme Activation Guanosine Triphosphate/metabolism Molecular Weight Nucleic Acid Hybridization Phosphorus Radioisotopes RNA, Viral/biosynthesis Rifampin Transcription, Genetic Tritium

Carbon Radioisotopes DNA, Viral Phosphorus Radioisotopes RNA, Viral Tritium Guanosine Triphosphate Adenosine Triphosphate DNA-Directed RNA Polymerases Rifampin