the toxin alpha-sarcin specifically cuts 28 s rrna at a single position 393 nucleotides from its 3 ' end in isolated rat liver polysomes , provided the ribosomes are pretreated with edta or puromycin ( endo , y . & wool , i. g. ( 1982 ) j. biol . chem . 257 , 9054-9060 ) .
C0035701
rrna
C0035553
ribosomes