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. 1971 Sep;107(3):618–622. doi: 10.1128/jb.107.3.618-622.1971

Biosynthetic Precursors of Some Modified Nucleosides in the Transfer Ribonucleic Acid of Mycoplasma mycoides var. capri

R T Walker 1
PMCID: PMC246979  PMID: 5095284

Abstract

The ribosomal and transfer ribonucleic acid (tRNA) from Mycoplasma mycoides var. capri, grown in a medium containing uridine-(14C)-5′-triphosphate and cytidine-(5-3H)-5′-triphosphate, were isolated and separated. The uridine in both species of RNA was shown to contain 14C and the cytidine to contain both 3H and 14C. Comparison of the labeling of 4-thiouridine and pseudouridine, obtained from an enzymatic digest of the RNA, indicates that their biosynthetic precursor is uridine, not cytidine. It is probable that ribothymidine and dihydrouridine have the same derivation.

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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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