Subunits of RNA polymerase in function and structure. IV. Enhancing role of sigma in the subunit assembly of Escherichia coli RNA polymerase.

Centrifugation, Density Gradient Coliphages DNA, Viral DNA-Directed RNA Polymerases Enzyme Activation Escherichia coli/enzymology Hydrogen-Ion Concentration Osmolar Concentration Potassium Chloride Sulfur Isotopes Temperature Tritium

DNA, Viral Sulfur Isotopes Tritium Potassium Chloride DNA-Directed RNA Polymerases