thus , considering together with the previous result ( endo , y. , mitsui , k. , motizuki , m. , and tsurugi , k. ( 1987 ) j. biol . chem . 262 , 5908-5912 ) , the results in the present experiments demonstrated that ricin a-chain inactivates the ribosomes by cleaving the n-glycosidic bond of a4324 of 28 s rrna in a hydrolytic fashion .
C0035553
ribosomes
C0035701
rrna