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| Content Provider | Springer Nature Link |
|---|---|
| Author | Zavilgelsky, G. B. Melkina, O. E. Kotova, V. Yu. Kopleva, M. N. Manukhov, I. V. Pustovoit, K. S. |
| Copyright Year | 2015 |
| Abstract | The luminescent bacterium Escherichia coli AB1886 uvrA6 (pLeo1) carries a plasmid with the luxCDABE genes of the marine bacterium Photobacterium leiognathi; its UV resistance is approximately twice as high as the UV resistance of nonluminous E. coli AB1886 uvrA6. The phr::kan$^{r}$ mutations (a defect in photolyase functional activity) that were introduced in the E. coli AB1886 uvrA6 (pLeo1) genome completely abolished the high UV resistance, indicating that the bacterial photolyase that is responsible for photoreactivation made a major contribution to bioluminescence-induced DNA repair. The photoreactivating activity of P. leiognathi bioluminescence was approximately 2.5 times lower than that induced by a light source with λ > 385 nm. When E. coli cells with a plasmid containing luxCDABE under the control of RecA-LexA-regulated promoters were exposed to UV light, the UV-induced bioluminescence intensity did not increase until 25–30 min after the exposure, nor did it contribute to DNA repair. The quorum-sensing regulatory system was not involved in DNA repair mediated by photolyase. |
| Starting Page | 739 |
| Ending Page | 744 |
| Page Count | 6 |
| File Format | |
| ISSN | 00063509 |
| Journal | Biophysics |
| Volume Number | 60 |
| Issue Number | 5 |
| e-ISSN | 15556654 |
| Language | English |
| Publisher | Pleiades Publishing |
| Publisher Date | 2015-12-18 |
| Publisher Place | Moscow |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | bioluminescence photolyase photoreactivation SOS induction quorum sensing Biophysics and Biological Physics |
| Content Type | Text |
| Resource Type | Article |
| Subject | Biophysics |
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