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. 1983 Dec;156(3):1099–1106. doi: 10.1128/jb.156.3.1099-1106.1983

Rates of peptidoglycan turnover and cell growth of Bacillus subtilis are correlated.

H Y Cheung, L Vitković, E Freese
PMCID: PMC217954  PMID: 6196348

Abstract

Peptidoglycan turnover was measured by the decrease of trichloroacetic acid-precipitable label in cells labeled with N-acetyl-D-[14C]glucosamine. The rate of turnover was reduced strongly by the inhibition of RNA or protein synthesis and weakly by the inhibition of lipid, peptidoglycan, or DNA synthesis. It increased with the growth rate (which was controlled by the concentration of oxomethylvalerate limiting the intracellular isoleucine supply) to the same degree in stringent (rel+) and isogenic relaxed (relA) strains. In these and all other strains tested, the turnover rate (k) increased with the growth rate (g) according to the equation, k = 0.70 X g1.38, even when the growth rate was systematically altered by changes in the temperature or in the composition of the medium.

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Selected References

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