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Volumn 7, Issue 13, 2001, Pages 2829-2833

Is "frank" DNA-strand breakage via the guanine radical thermodynamically and sterically possible?

Author keywords

Bond energies; Density functional calculations; DNA cleavage; Electron transfer

Indexed keywords

DNA; ELECTRONS; HYDROGEN BONDS; PROTONS; REDUCTION; STEREOCHEMISTRY; THERMODYNAMICS; X RAY ANALYSIS;

EID: 0035796427     PISSN: 09476539     EISSN: None     Source Type: Journal    
DOI: 10.1002/1521-3765(20010702)7:13<2829::AID-CHEM2829>3.0.CO;2-N     Document Type: Article
Times cited : (28)

References (62)
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    • On the question whether or not the guanine radical (cation) is able to induce ("frank") strand breaks, different authors have come to different answers: In P. M. Cullis, M. E. Malone, L. A. Merson-Davies, J. Am. Chem. Soc. 1996, 118, 2775 it is reported that the guanine radical does not lead to strand breakage, whereas in ref. [9] the authors come to the opposite conclusion.
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    • On a high level of theory, see ref. [24]
    • On a high level of theory, see ref. [24].
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    • The optimized geometry of dGuo was compared with the experimental data measured (L. H. Koole, H. M. Buck, J. A. Kanters, A. Schouten, Can. J. Chem. 1988, 66, 2634-2639) for 2′-deoxyguanosine-3′,5′-diacetate and found to be equal within the standard deviation of 0.019 Å (bond lengths) and 1.1° (bond angles). See Supporting Information.
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    • With the corresponding radicals derived from 1-amino-2-deoxyribose as a model it is the C4-radical which is the most stable: S. D. Wetmore, R. J. Boyd, L. A. Eriksson, J. Phys. Chem. B 1998, 102, 7674-7686.
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    • note
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    • note
    • a value of the base radical in the cluster. These data are not available.
  • 46
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    • note
    • By H-addition to these heteroatoms, tautomers of guanosine would be formed which would revert back to the most stable, the N1-H tautomer.
  • 47
    • 0004569228 scopus 로고    scopus 로고
    • note
    • For the purpose of discussion it is assumed that the bond energies are the same in the three tautomers.
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    • ndbserver.rutgers.edu/NDB/ndb.html.
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    • note
    • The corresponding bond angles are given in Supporting Information, in Table 1.
  • 56
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    • note
    • No data on an oligonucleotide containing a GGG triplet with B conformation have been deposited in the database.
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    • note
    • The corresponding intermolecular reaction in aqueous solution between the guanosine radical and ribose does occur, although with a low rate constant, see ref. [10].


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.