Cloning of a new bidirectionally selectable marker for Aspergillus strains
| Autor: | Frank Buxton, R. Wayne Davies, David Ivor Gwynne |
|---|---|
| Rok vydání: | 1989 |
| Předmět: |
Genetic Markers
Mutant Genes Fungal Restriction Mapping Molecular cloning Selenic Acid Aspergillus nidulans Selenium Plasmid Transformation Genetic Genetics Genomic library Cloning Molecular Selenium Compounds Selectable marker Gene Library biology Aspergillus niger General Medicine biology.organism_classification Nucleotidyltransferases Sulfate Adenylyltransferase Complementation Blotting Southern Biochemistry Mutation Plasmids |
| Zdroj: | Gene. 84(2) |
| ISSN: | 0378-1119 |
| Popis: | Mutants that lack adenosine triphosphate sulfurylase (ATPsase; EC 2.7.7.4) are unable to use sulfate as sole source of sulfur and are also resistant to selenate. These mutants, denoted sC − , are readily obtained from any strain of Aspergillus niger or Aspergillus nidulans by the strong selection for selenate resistance. We have cloned the gene encoding ATPsase from A. nidulans by complementation of an sC mutant strain of A. nidulans with a gene library and show that plasmids containing this gene transform both A. niger and A. nidulans sC − strains, restoring their ability to grow on sulfate as sole sulfur source. The fact that strong selection for either sC + or sC − can be applied provides a simple way of delivering genetically engineered constructs to any strain of A. niger including strains of industrial importance. In addition, this system is useful for gene replacements and other genomic DNA manipulations in Aspergillus species. |
| Databáze: | OpenAIRE |
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