with the aid of minicells from a strain containing the episome f'101 which carries the thr-leu segment of the chromosome it was demonstrated that ( i ) in vivo synthesis of r-protein s20 could proceed in the absence of the synthesis of ribosomal rna and of other r-proteins , and ( ii ) r-protein s20 was degraded under conditions where it was not assembled into ribosomes .
C0597295
synthesis
C0035553
ribosomes