[Electrophoretic characteristics of the protein composition of mutant forms of pea nodular bacteria]

A water-soluble protein fraction was studied by gel electrophoresis in the parent and mutant forms of the nodule bacterium Rhizobium leguminosarum. The composition of this fraction changed under the action of NTG. Changes in the composition of protein components in the mutants as compared with that of the parent strain are caused presumably by their modified specificity.