Abstract
Deoxyribonucleic acid (DNA) synthesis was examined in asynchronous and synchronous cultures of a number of cdc (cell division cycle) temperature-sensitive mutant strains. The kinetics of DNA synthesis after a shift to the restrictive temperature was compared with that obtained after inhibition of protein synthesis at the permissive temperature, a condition that specifically blocks the initiation of new rounds of DNA replication, but does not block those in progress. Mutations in three genes (cdc 4, 7, and 28) appear to block a precondition for DNA synthesis since cells carrying these lesions cannot start new rounds of DNA replication after a shift from permissive to restrictive temperature, but can finish rounds that were in progress. These three genes are classified as having roles in the “initiation” of DNA synthesis. Mutations in two genes (cdc 8 and 21) block DNA synthesis, itself, since cells harboring these lesions that had started DNA synthesis at the permissive temperature arrest synthesis abruptly upon a shift to the restrictive temperature. Mutations in 13 other cdc genes do not impair DNA synthesis in the first cell cycle at the restrictive temperature.
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- Bücking-Throm E., Duntze W., Hartwell L. H., Manney T. R. Reversible arrest of haploid yeast cells in the initiation of DNA synthesis by a diffusible sex factor. Exp Cell Res. 1973 Jan;76(1):99–110. doi: 10.1016/0014-4827(73)90424-2. [DOI] [PubMed] [Google Scholar]
- Culotti J., Hartwell L. H. Genetic control of the cell division cycle in yeast. 3. Seven genes controlling nuclear division. Exp Cell Res. 1971 Aug;67(2):389–401. doi: 10.1016/0014-4827(71)90424-1. [DOI] [PubMed] [Google Scholar]
- Fuchs J. A., Karlström H. O., Warner H. R., Reichard P. Defective gene product in dnaF mutant of Escherichia coli. Nat New Biol. 1972 Jul 19;238(81):69–71. doi: 10.1038/newbio238069a0. [DOI] [PubMed] [Google Scholar]
- Gefter M. L., Hirota Y., Kornberg T., Wechsler J. A., Barnoux C. Analysis of DNA polymerases II and 3 in mutants of Escherichia coli thermosensitive for DNA synthesis. Proc Natl Acad Sci U S A. 1971 Dec;68(12):3150–3153. doi: 10.1073/pnas.68.12.3150. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Grossman L. I., Goldring E. S., Marmur J. Preferential synthesis of yeast mitochondrial DNA in the absence of protein synthesis. J Mol Biol. 1969 Dec 28;46(3):367–376. doi: 10.1016/0022-2836(69)90182-x. [DOI] [PubMed] [Google Scholar]
- Hartwell L. H., Culotti J., Reid B. Genetic control of the cell-division cycle in yeast. I. Detection of mutants. Proc Natl Acad Sci U S A. 1970 Jun;66(2):352–359. doi: 10.1073/pnas.66.2.352. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Hartwell L. H. Genetic control of the cell division cycle in yeast. II. Genes controlling DNA replication and its initiation. J Mol Biol. 1971 Jul 14;59(1):183–194. doi: 10.1016/0022-2836(71)90420-7. [DOI] [PubMed] [Google Scholar]
- Hartwell L. H. Periodic density fluctuation during the yeast cell cycle and the selection of synchronous cultures. J Bacteriol. 1970 Dec;104(3):1280–1285. doi: 10.1128/jb.104.3.1280-1285.1970. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Lark K. G. Evidence for the direct involvement of RNA in the initiation of DNA replication in Escherichia coli 15T. J Mol Biol. 1972 Feb 28;64(1):47–60. doi: 10.1016/0022-2836(72)90320-8. [DOI] [PubMed] [Google Scholar]
- Lark K. G. Initiation and control of DNA synthesis. Annu Rev Biochem. 1969;38:569–604. doi: 10.1146/annurev.bi.38.070169.003033. [DOI] [PubMed] [Google Scholar]
- Nüsslein V., Otto B., Bonhoeffer F., Schaller H. Function of DNA polymerase 3 in DNA replication. Nat New Biol. 1971 Dec 29;234(52):285–286. doi: 10.1038/newbio234285a0. [DOI] [PubMed] [Google Scholar]
- Wechsler J. A., Gross J. D. Escherichia coli mutants temperature-sensitive for DNA synthesis. Mol Gen Genet. 1971;113(3):273–284. doi: 10.1007/BF00339547. [DOI] [PubMed] [Google Scholar]