Abstract
We studied the replication of random genomic DNA fragments from Saccharomyces cerevisiae in a long-term assay in human cells. Plasmids carrying large yeast DNA fragments were able to replicate autonomously in human cells. Efficiency of replication of yeast DNA fragments was comparable to that of similarly sized human DNA fragments and better than that of bacterial DNA. This result suggests that yeast genomic DNA contains sequence information needed for replication in human cells. To examine whether DNA replication in human cells would initiate specifically at a yeast origin of replication, we monitored initiation on a plasmid containing the yeast 2-micron autonomously replicating sequence (ARS) in yeast and human cells. We found that while replication initiates at the 2-micron ARS in yeast, it does not preferentially initiate at the ARS in human cells. This result suggests that the sequences that direct site specific replication initiation in yeast do not function in the same way in human cells, which initiate replication at a broader range of sequences.
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by J.A. Huberman
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Tran, C.T., Caddle, M.S. & Calos, M.P. The replication behavior of Saccharomyces cerevisiae DNA in human cells. Chromosoma 102, 129–136 (1993). https://doi.org/10.1007/BF00356030
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DOI: https://doi.org/10.1007/BF00356030