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. 1966 Feb;91(2):517–523. doi: 10.1128/jb.91.2.517-523.1966

Dissociation of Cellular Functions in Bacillus cereus by 5-Fluorouracil

Melvin Reich a,1, H George Mandel a
PMCID: PMC314890  PMID: 4956778

Abstract

Reich, Melvin (The George Washington University School of Medicine, Washington, D.C.), and H. George Mandel. Dissociation of cellular functions in Bacillus cereus by 5-fluorouracil. J. Bacteriol. 91:517–523. 1966.—5-Fluorouracil (FU) produced a marked inhibition of growth and deoxyribonucleic acid (DNA) synthesis in Bacillus cereus 569H. Protein and ribonucleic acid (RNA) synthesis were not specifically inhibited, and proceeded at the rate of turbidometric increase of the cells. Cell-wall synthesis, respiration, and penicillinase production continued in the presence of FU at essentially the control rate. The addition of equimolar concentrations of uracil and FU prevented growth inhibition but did not restore DNA synthesis. The addition of thymidine with FU did not relieve growth inhibition but did restore the DNA content to normal. Thymidine supplementation also increased the quantity of FU, but not uracil, incorporated into RNA and the acid-soluble fraction. The data indicate that inhibition of growth can be dissociated from inhibition of DNA synthesis and that more DNA is present in normal cells than is needed for growth and reproduction.

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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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