[Immune electron microscope localization of RNA-polymerase on the Escherichia coli chromosome using monoclonal antibodies against the beta-subunit].

Possibility of the immunoelectron microscopic visualization of RNA polymerase on the Escherichia coli chromosome with monoclonal antibodies against the beta-subunit labelled by [protein A.gold] complex was demonstrated. Using this method RNA polymerase molecules were revealed within nucleoid as well as on the membrane-free chromosome.