. "Catalysis of the hydrolysis of the N-glycosylic bond at A-4324 in 28S rRNA from rat ribosomes or corresponding sites in 28S RNA from other species." . . "rRNA N-glycosylase activity" . "gelonin" . "mirabilis antiviral protein" . "momorcochin-S" . "nigrin b" . "ribosomal ribonucleate N-glycosidase activity" . "ricin" . "RNA N-glycosidase activity" . "rRNA N-glycohydrolase activity" . "rRNA N-glycosidase activity" . "saporins" . . .