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Formation of Ribonucleic Acid during the Recovery of the Deoxyribonucleic Acid Synthetic System of Bacteria damaged by Ultra-violet Light

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Abstract

A REQUIREMENT for RNA and protein, synthesis in recovery of the DNA synthetic system of Escherichia coli damaged by ultra-violet light (UV) has been demonstrated1–4. At that dose of ultra-violet light producing the maximum possible delay in DNA synthesis without non-restorable inactivation, an approximate doubling of RNA occurs before initiation of DNA synthesis4. If chloram-phenicol, an antibiotic which blocks protein synthesis, is added before the doubling of RNA, DNA synthesis proceeds, after the completion of the restoration period, at a reduced, non-accelerating rate directly related to the increase in RNA between the time of exposure to ultraviolet light and the time of adding chloramphenicol4.

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  1. Section of Genetics, Department of Biology, University of Texas, M.D. Anderson Hospital and Tumor Institute, Houston, Texas

    C. O. DOUDNEY

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  1. C. O. DOUDNEY
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DOUDNEY, C. Formation of Ribonucleic Acid during the Recovery of the Deoxyribonucleic Acid Synthetic System of Bacteria damaged by Ultra-violet Light. Nature 209, 528–529 (1966). https://doi.org/10.1038/209528a0

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