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. 1986 Nov;6(11):3621–3625. doi: 10.1128/mcb.6.11.3621

Saccharomyces cerevisiae centromere CEN11 does not induce chromosome instability when integrated into the Aspergillus nidulans genome.

M T Boylan, M J Holland, W E Timberlake
PMCID: PMC367122  PMID: 3540597

Abstract

We constructed Aspergillus nidulans transformation plasmids containing the A. nidulans argB+ gene and either containing or lacking centromeric DNA from Saccharomyces cerevisiae chromosome XI (CEN11). The plasmids transformed an argB Aspergillus strain to arginine independence at indistinguishable frequencies. Stable haploid transformants were obtained with both plasmids, and strains were identified in which the plasmids had integrated into chromosome III by homologous recombination at the argB locus. Plasmid DNA was recovered from a transformant containing CEN11, and the sequence of the essential portion of CEN11 was determined to be unaltered. The transformants were further characterized by using them to construct heterozygous diploids and then testing the diploids for preferential loss of the plasmid-containing chromosomes. The CEN11 sequence had little or no effect on chromosome stability. Thus, CEN11 does not prevent chromosomal integration of plasmid DNA and probably lacks centromere activity in Aspergillus spp.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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