[Formation of covalent linkages between the nucleic acid and protein constituents of E. coli MRE 600 ribosomes during gamma irradiation].

Gamma-irrdiation of E. coli MRE 600 ribosomes in aqueous suspensions leads to covalent linkages between the RNA and some ribosomal proteins. The presence of oxygen during the irradiation strongly inhibits this phenomenon. It appears clearly that only a few proteins are able to participate in these cross-linking reactions, which occur simultaneously in the two sub-units. The radiochemical yield was determined at several concentrations and was relatively low.