title: Cross-linking studies on Escherichia coli ribonucleic acid polymerase [proceedings].
mesh_terms: D012321:DNA-Directed RNA Polymerases; D004926:Escherichia coli / Q000201:enzymology*; D046911:Macromolecular Substances; D008301:Maleimides; D008970:Molecular Weight
chemical_list: D046911:Macromolecular Substances; D008301:Maleimides; D012321:DNA-Directed RNA Polymerases