the effect of the presence or absence of the methylgroups of the m2 ( 6 ) am2 ( 6 ) a sequence near the 3 ' end of 16s rrna of escherichia coli on the interaction of the ribosomal subunits has been studied , using wild-type ( methylated ) and mutant ( unmethylated ) ribosomes .
C3537372
16s rrna
C0035553
ribosomes