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. 1968 May;95(5):1627–1633. doi: 10.1128/jb.95.5.1627-1633.1968

Cell Division During Inhibition of Deoxyribonucleic Acid Synthesis in Escherichia coli

Charles E Helmstetter 1, Olga Pierucci 2
PMCID: PMC252187  PMID: 4870278

Abstract

When cultures of Escherichia coli B/r growing at various rates were exposed to ultraviolet light, mitomycin C, or nalidixic acid, deoxyribonucleic acid (DNA) synthesis stopped but cell division continued for at least 20 min. The chromosome configurations in the cells which divided were estimated by determining the rate of DNA synthesis during the division cycle. The cultures were pulse-labeled with 14C-thymidine, and the amount of label incorporated into cells of different ages was found by measuring the radioactivity in cells born subsequent to the labeling period. The cells which divided in the absence of DNA synthesis were those which had completed a round of chromosome replication prior to the treatments. It was concluded that completion of a round of replication is a necessary and sufficient condition of DNA synthesis for cell division.

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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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