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. 1976 Feb;125(2):444–452. doi: 10.1128/jb.125.2.444-452.1976

Synthesis of deoxyribonucleic acid, ribonucleic acid, and protein during sporulation of Clostridium perfringens.

R G Labbe, C L Duncan
PMCID: PMC236102  PMID: 173709

Abstract

The kinetics of deoxyribonucleic acid (DNA), ribonucleic acid (RNA), and protein synthesis as well as protein breakdown during sporulation by Clostridium perfringens were determined. Maximum levels of DNA and net RNA synthesis occurred 3 and 2 h, respectively, after inoculation of sporulation medium. The rate of RNA synthesis decreased as sporulation progressed. Deoxyadenosine increased uptake of [14C]uracil and [14C]thymine but depressed the level of sporulation and the formation of heat-resistant spores when added at concentrations above 100 mug/ml. Unlike Bacillus species, net protein synthesis, which was sensitive to chloramphenicol inhibition, continued during sporulation. The rate of protein breakdown during vegetative growth was 1%/h. During sporulation this rate increased to 4.7%/h. When added to sporulation medium at 0 time chloramphenicol reduced protein breakdown to 1%/h. If added at 3 h the rate decreased to 2.1%/h. The role of proteases in this process is discussed.

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Selected References

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