The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.
Mechanism of Charge Transport in DNA: Internally-Linked Anthraquinone Conjugates Support Phonon-Assisted Polaron Hopping
Abstract
A series of anthraquinone-containing (AQ) DNA conjugates was prepared. In each case, the AQ is linked to the 2‘-oxygen of a uridine. Physical and spectroscopic data suggest that the AQ is intercalated in the duplex DNA on the 3‘-side of the uracil. Irradiation of the AQ-DNA conjugates with UV light results in piperidine-requiring strand cleavage at GG steps of both the AQ-containing strand and its complement. The AQ-conjugates were designed to have GG steps disposed symmetrically about the AQ intercalation site. The distance dependence of reaction efficiency at GG steps following AQ irradiation was measured by means of an AQ-containing 71 mer having 7 GG steps. The efficiency of reaction in this sequence falls off exponentially with a distance dependence of 0.071 Å - 1 . AQ-containing conjugates were prepared that incorporate 7,8-dihydro-8-oxoguanines (8-OxoG) at various locations. 8-OxoG has a lower oxidation potential than any of the normal DNA bases and serves as a trap for the migrating radical cation. The 8-OxoG is a very effective trap when the radical cation must migrate through it to reach the GG step, it is a less effective trap when it is on the strand complementary to the GG step. These findings support the mechanism for long-range radical cation migration described as phonon-assisted polaron hopping.
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Cites
Steenken, S., & Jovanovic, S. V. (1997) · Journal of the American Chemical Society · doi:10.1021/ja962255b · Cited by 1,450
Cited by
Conwell, E. M., & Rakhmanova, S. V. (2000) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.050074497 · Cited by 324
Electronic Coupling for Charge Transfer and Transport in DNA
Voityuk, A. A., Rösch, N., Bixon, M., & Jortner, J. (2000) · The Journal of Physical Chemistry B · doi:10.1021/jp001109w · Cited by 271
Minor contribution of direct ionization to DNA base damage inducedby heavy ions
Douki, T., Ravanat, J.-L., Pouget, J.-P., Testard, I., & Cadet, J. (2006) · International Journal of Radiation Biology · doi:10.1080/09553000600573788 · Cited by 106
DNA−Protein Cross-Linking via Guanine Oxidation: Dependence upon Protein and Photosensitizer
Kurbanyan, K., Nguyen, K. L., To, P., Rivas, E. V., Lueras, A. M. K., Kosinski, C., Steryo, M., González, A., Mah, D. A., & Stemp, E. D. A. (2003) · Biochemistry · doi:10.1021/bi020713p · Cited by 53
Metadata
- Authors
- Ly, D., Sanii, L., & Schuster, G. B.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 1999-09-24
- Volume
- 121
- Issue
- 40
- Pages
- 9400-9410
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W2024241029
- Cited by
- 181
- References
- 1
- FWCI
- 4.13
- Type
- journal article
- Language
- en
- Open access
- closed
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- Ly, D., Sanii, L., & Schuster, G. B. (1999). Mechanism of Charge Transport in DNA: Internally-Linked Anthraquinone Conjugates Support Phonon-Assisted Polaron Hopping. Journal of the American Chemical Society. https://doi.org/10.1021/ja991753s
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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