Reverse transcription of tRNA
- PMID: 77522
- PMCID: PMC342068
- DOI: 10.1093/nar/5.4.1165
Reverse transcription of tRNA
Abstract
The 3' terminus of tRNA was enzymatically elongated by an oligo(A) tail. A fragment of DNA polymerase I (E. coli) was used in the presence of manganese to phase and synthesize a cleavable primer at the oligo(A)-tRNA template. When the threedimensional structure of oligo(A)-tRNA is being unfolded under conditions where the primer is still hybridized at the oligo(A) tail, the DNA polymerase I fragment transcribes oligo(A)-tRNA into DNA. Reverse transcription is slowed down and its fidelity suspended by the 1-methyladenine in oligo(A)-tRNAPhe(yeast). The reaction is stopped by the highly modified Y-base present in this template. Approximately full length transcripts can be obtained from oligo(A)-tRNA3Gly(E.coli). The transcription products were characterized by sequence analysis.
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