when the deproteinized escherichia coli rrna was the substrates , ricin a-chain cleaved a n-glycosidic bond at a-2600 in 23s rrna which corresponds to the ricin-site in 28s rrna of rat liver ribosomes , while the a-chain has little activity on 23s rrna in the ribosomes .
C0035701
rrna
C0035553
ribosomes