title: Small-angle x-ray study of DNA-dependent RNA polymerase subunit alpha 2 from Escherichia coli.
mesh_terms: D012321:DNA-Directed RNA Polymerases; D004926:Escherichia coli / Q000201:enzymology*; D046911:Macromolecular Substances; D011487:Protein Conformation; D014961:X-Ray Diffraction
chemical_list: D046911:Macromolecular Substances; D012321:DNA-Directed RNA Polymerases