Nuclear Mitochondrial DNA Activates Replication in Saccharomyces cerevisiae
2011
Mitochondrial DNA as Nuclear Origin
Sample size: 6
publication
10 minutes
Evidence: high
Author Information
Author(s): Laurent Chatre, Miria Ricchetti
Primary Institution: Institut Pasteur, Paris, France
Hypothesis
Can mitochondrial DNA fragments (NUMTs) promote nuclear DNA replication in Saccharomyces cerevisiae?
Conclusion
NUMTs can act as independent origins of replication in the nuclear genome of yeast.
Supporting Evidence
- NUMTs are rich in key autonomously replicating sequence (ARS) consensus motifs.
- Mutation of the ACS motif in NUMTs reduces their replication activity.
- NUMTs can enhance the replication activity of plasmids in yeast.
Takeaway
Some pieces of DNA from mitochondria can help yeast cells copy their nuclear DNA, acting like starting points for the copying process.
Methodology
The study involved plasmid maintenance assays and 2D-gel electrophoresis to analyze the replication activity of NUMTs.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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