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. 1973 Feb;113(2):558–564. doi: 10.1128/jb.113.2.558-564.1973

Increasing Activity of Germinating Bacillus subtilis Spores to Incorporate Thymidine Triphosphate into Deoxyribonucleic Acid After Detergent Treatment

Yasutaro Fujita 1,2, Tohru Komano 1,2, Hiroshi Tanooka 1,2
PMCID: PMC285265  PMID: 4632316

Abstract

The incorporation of 3H-labeled thymidine triphosphate (3H-dTTP) into deoxyribonucleic acid (DNA) of germinated and then Brij 58-treated Bacillus subtilis spores was measured to study DNA replication activity of cells. The dTTP incorporation rate was very low in dormant spores, gradually increased as germination proceeded, and reached a level of the vegetative cell activity approximately 4 hr after the start of germination. This is in contrast to the DNA polymerase activity in the cell extract which remained at the same level throughout the germination period. The increase of the dTTP incorporation activity was inhibited by chloramphenicol or phenethyl alcohol. When these inhibitors were added after germination had proceeded, the elevated dTTP incorporation activity gradually decreased. Permeability to dTTP of spores germinated in the presence of chloramphenicol and then treated with Brij 58 was confirmed by (i) 3H-dTTP incorporation into the treated spores following either electron or ultraviolet irradiation and (ii) release of radioactivity from the treated spores containing radioactively labeled DNA after deoxyribonuclease I treatment.

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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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