Abstract
Genome-wide Okazaki fragment distribution can differentiate the discontinuous from the semi-discontinuous DNA replication model. Here, we investigated the genome-wide Okazaki fragment distribution in Saccharomyces cerevisiae S288C. We improved the method based upon lambda exonuclease digestion to purify Okazaki fragments from S288C yeast cells, followed by Illumina sequencing. The distribution of Okazaki fragments around confirmed replication origins, including two highly efficient replication origins, supported the discontinuous DNA replication model. In S. cerevisiae mitochondria, Okazaki fragments were overrepresented in the transcribed regions, indicating the interplay between transcription and DNA replication.
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