We have previously described a collection of mutations in conserved residues of the core of the Tetrahymena self-splicing intron. Most of these single base substitutions have less than 10% of the activity of their parental intron derivative [Couture, S., et al., (1990) J. Mol. Biol., 215, 345-358]. We examined the effect of two agents known to stabilize RNA… (More)
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