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. 1973 Apr;70(4):1046–1049. doi: 10.1073/pnas.70.4.1046

Evidence for the Absence of the G-T-Ψ-C Sequence From Two Mammalian Initiator Transfer RNAs

Guy Petrissant 1
PMCID: PMC433422  PMID: 4352221

Abstract

Analyses were performed on the purified initiator tRNA from rabbit liver to test for the presence of Ψp and Tp in this molecule. Neither of these nucleotides could be detected after hydrolysis by piperidine, NaOH, or T2 RNase. Similarly digestion with venom phosphodiesterase plus phosphatase failed to release any pseudourdine or ribothymidine. Identical results were obtained with the initiator tRNA from sheep mammary gland. The absence of these nucleosides was confirmed by pancreatic and T1 RNase digestion of the rabbit-liver initiator tRNA. The classical G-T-Ψ-C sequence was not detected in this molecule. An A-U-C-G sequence has been identified; it may possibly replace the G-T-Ψ-C sequence.

Keywords: rabbit liver, sheep mammary gland, thin-layer chromatography

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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