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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Li, Anatoliy Schuermann, David Gallego, Francesca Kovalchuk, Igor Tinland, Bruno |
| Description | Country affiliation: Switzerland Author Affiliation: Li A ( Institute of Plant Sciences, Eidgenössische Technishe Hochschule, Universitätsstr 2, CH-8092 Zürich, Switzerland.) |
| Abstract | All living organisms have to protect the integrity of their genomes from a wide range of genotoxic stresses to which they are inevitably exposed. However, understanding of DNA repair in plants lags far behind such knowledge in bacteria, yeast, and mammals, partially as a result of the absence of efficient in vitro systems. Here, we report the experimental setup for an Arabidopsis in vitro repair synthesis assay. The repair of plasmid DNA treated with three different DNA-damaging agents, UV light, cisplatin, and methylene blue, after incubation with whole-cell extract was monitored. To validate the reliability of our assay, we analyzed the repair proficiency of plants depleted in AtRAD1 activity. The reduced repair of UV light- and cisplatin-damaged DNA confirmed the deficiency of these plants in nucleotide excision repair. Decreased repair of methylene blue-induced oxidative lesions, which are believed to be processed by the base excision repair machinery in mammalian cells, may indicate a possible involvement of AtRAD1 in the repair of oxidative damage. Differences in sensitivity to DNA polymerase inhibitors (aphidicolin and dideoxy TTP) between plant and human cell extracts were observed with this assay. |
| File Format | HTM / HTML |
| ISSN | 10404651 |
| e-ISSN | 1531298X |
| Journal | THE PLANT CELL ONLINE |
| Issue Number | 1 |
| Volume Number | 14 |
| Language | English |
| Publisher | American Society of Plant Biologists |
| Publisher Date | 2002-01-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Discipline Botany Arabidopsis Genetics Dna Damage Dna Repair Dna-binding Proteins Aphidicolin Pharmacology Cytology Radiation Effects Cell Extracts Cisplatin Drug Effects Dideoxynucleotides Endonucleases Metabolism Genome, Plant Methylene Blue Nucleic Acid Synthesis Inhibitors Oxidative Stress Plants, Genetically Modified Thymine Nucleotides Ultraviolet Rays Comparative Study Research Support, Non-u.s. Gov't |
| Content Type | Text |
| Resource Type | Article |
| Subject | Cell Biology Plant Science |
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