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PMID:4580573

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Citation

Hartwell, LH (1973) Three additional genes required for deoxyribonucleic acid synthesis in Saccharomyces cerevisiae. J. Bacteriol. 115:966-74

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.

Links

PubMed PMC246343

Keywords

Carbon Isotopes; Cell Division; Cycloheximide/pharmacology; DNA/biosynthesis; DNA Replication; Fungal Proteins/biosynthesis; Genes; Mutation; RNA/biosynthesis; Saccharomyces cerevisiae/growth & development; Saccharomyces cerevisiae/metabolism; Temperature; Uracil/metabolism

Significance

Annotations

Gene product Qualifier GO ID GO term name Evidence Code with/from Aspect Notes Status


See also

References

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