Abstract

Different nucleotides were introduced into nucleotides 32, 37 and 38 of yeast tRNA(Phe) precursors via oligonucleotide directed mutations. Pre-tRNAs were prepared using T7-transcription in vitro and spliced with the purified yeast tRNA endonuclease and tRNA ligase. It is demonstrated that tRNA ligase activities will be inhibited by the 5'-double-stranded end of 3'-halves.

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