| Autor: |
Kiechle M; Department of Pathology, School of Medicine, University of California at Los Angeles, Los Angeles, CA 90095, USA., Manivasakam P, Eckardt-Schupp F, Schiestl RH, Friedl AA |
| Jazyk: |
angličtina |
| Zdroj: |
Nucleic acids research [Nucleic Acids Res] 2002 Dec 15; Vol. 30 (24), pp. e136. |
| DOI: |
10.1093/nar/gnf136 |
| Abstrakt: |
Non-homologous insertion (NHI) of DNA fragments into genomic DNA is a method widely used in insertional mutagenesis screens. In the yeast Saccharomyces cerevisiae, the efficiency of NHI is very low. Here we report that its efficiency can be increased by gamma-irradiation of recipient cells at the time of transformation. Radiation-assisted NHI depends on YKU70, but its efficiency is not improved by inactivation of RAD5 or RAD52. In a pilot study, we generated 102 transformant clones expressing a lacZ reporter gene under standard conditions (30 degrees C, rich medium). The site of insertion was determined in a subset of eight clones in which lacZ expression was altered by UV-irradiation. A comparison with published data revealed that three of the eight genes identified in our screen have not been targeted by large-scale transposon-based insertion screens. This suggests that radiation-assisted NHI offers a more homogeneous coverage of the genome than methods relying on transposons or retroviral elements. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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