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Control of membrane protein synthesis in Bacillus subtilis

, : Control of membrane protein synthesis in Bacillus subtilis. Biochimica et Biophysica Acta 406(4): 564-574

In synchronous cultures of Bacillus subtilis 168/S grown on succinate as a sole carbon source (mean generation time 115 min), chromosome initiation occurs at the beginning of the cell cycle but the rate of membrane protein synthesis doubles in mid-cycle more or less coincident with nuclear segregation. In glucose-grown cultures, the doubling in rate of membrane protein synthesis occurs at about the same time as nuclear segregation and DNA initiation at the beginning of the cycle. Control of the rate of membrane synthesis by the chromosome has been demonstrated by inhibiting DNA synthesis using thymine starvation and showing that membrane protein synthesis continues at a constant rate, whereas the rate of cytoplasmic protein synthesis almost doubles. I suggest that the replication of a region at or close to the chromosome terminus is required to allow the doubling in rate of membrane synthesis.


PMID: 810172

DOI: 10.1016/0005-2736(75)90033-4

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