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. 1975 Jul;149(1):209–220. doi: 10.1042/bj1490209

Synthesis of thiol-containing analogues of puromycin and a study of their interaction with N-acetylphenylalanyl-transfer ribonucleic acid on ribosomes to form thioesters

John Gooch 1, Arthur O Hawtrey 1
PMCID: PMC1165607  PMID: 1103886

Abstract

1. The thiol-containing analogue of puromycin, 6-dimethylamino-9-{1′-[3′-(2″-mercapto-3″-phenylpropionamido)-3′-deoxy-β-d-ribofuranosyl]}purine (XVII) in which the primary amino group of the antibiotic is replaced with a thiol grouping, was synthesized chemically (compound XVII is abbreviated to thiopuromycin). 2. Thiopuromycin (XVII) was found to be active in releasing N-[3H]acetylphenylalanine from its tRNA carrier as the thioester, N-acetylphenylalanylthiopuromycin (XIX) in the Escherichia coli ribosomal system. The reaction product (XIX) was synthesized chemically from thiopuromycin and N-acetylphenylalanine and found to be stable to hydrolysis in the standard incubation medium at pH7.6. dl-Phenyl-lactylpuromycin (XXI), the hydroxy analogue of puromycin, was also synthesized chemically and shown to release N-acetylphenylalanine from its tRNA carrier in the E. coli ribosomal system, thus confirming the previous results of Fahnestock et al. [Biochemistry (1970) 9, 2477–2483]. 3. In marked contrast with the results obtained in the E. coli system, both thiopuromycin (XVII) and hydroxypuromycin (XXI) were found to be inactive in releasing N-acetylphenylalanine from its tRNA carrier in the rat liver ribosomal system.

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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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