dodecauridylate bearing a slowly alkylating reactive group in 5'-position , when bound as a mrna analogue to rat liver ribosomes , labels preferentially proteins of the small ribosomal subunit , in particular , protein s 26.fdodecauridylate bearing an identical reactive group in 3'-position labels mainly rrna o both subunits and proteins to less than 10 % , among which s3/3a are the main targets .
C0035553
ribosomes
C0035701
rrna