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Volumn 107, Issue 4, 2003, Pages 1062-1070

Near threshold photo-oxidation of dinucleotides containing purines upon 266 nm nanosecond laser excitation. The role of base stacking, conformation, and sequence

Author keywords

[No Author keywords available]

Indexed keywords

BASE PAIRING; DINUCLEOTIDES; ELECTRON SCAVENGERS; ELECTRONIC COUPLING; HOLE TRAPPING; IONIZATION POTENTIALS; NANOSECOND LASER PHOTOIONIZATION; NUCLEOSIDES; PURINES; SOLVATION;

EID: 0037473044     PISSN: 10895647     EISSN: None     Source Type: Journal    
DOI: 10.1021/jp026408v     Document Type: Article
Times cited : (24)

References (93)
  • 3
  • 19
    • 0003392592 scopus 로고
    • Hemminki, K., Dipple, A., Shiker, D. E. F., Kadlubar, F. F., Segerback, D., Bartsch, H., Eds.; IARC: Lyon, France
    • Cadet, J. In DNA Adducts: Identification and Significance; Hemminki, K., Dipple, A., Shiker, D. E. F., Kadlubar, F. F., Segerback, D., Bartsch, H., Eds.; IARC: Lyon, France, 1994.
    • (1994) DNA Adducts: Identification and Significance
    • Cadet, J.1
  • 45
    • 0034178265 scopus 로고    scopus 로고
    • note
    • Crespo-Hernández, C. E.; Flores, S.; Torres, C.; Negrón-Encarnación, I.; Arce, R. Photochem. Photobiol. 2000, 71, 534-543. In this previous work the monophotonic PI yield of guanosine was calculated to be 0.083, much higher than that presented in this and in a rencet publication (ref 21). The reason for such a drastic discrepancy in the one-photon PI yield was the use of 6-methylpurine (6MP) as a reference actinometer in the former work and the calculation of the PI yield by the comparative method. In that calculation, it was assumed that 6MP photoionizes by a one-photon pathway at 266 nm, but later it was demonstrated by our group that the PI of 6MP occurs through a combination of one- and two-photon pathways and thus the PI yield cannot be calculated at a single laser energy (ref 21). Furthermore, due to the linear increase of the hydrated electron signal as a function of the laser energy, it was assumed that only a one-photon PI was occurring, and not a combination of one- and two-photon, as shown in a later work (ref 21). Thus, the PI yield of guanosine was incorrectly calculated in the former work, resulting in a value differing by almost an order of magnitude.
    • (2000) Photochem. Photobiol. , vol.71 , pp. 534-543
    • Crespo-Hernández, C.E.1    Flores, S.2    Torres, C.3    Negrón-Encarnación, I.4    Arce, R.5
  • 85
    • 0013288110 scopus 로고    scopus 로고
    • note
    • However, due to this approximation, the correlation of the PI yield of the dinucleotides with the average IPs calculated for the corresponding triads should be regarded with caution.
  • 93
    • 0013282580 scopus 로고    scopus 로고
    • note
    • The quantum yield values presented in Table 2 of ref 19 in the presence of an electron scavenger for ApG and TpdG are incorrect (a typographical error). whrereas the discussions presented in this reference are correct.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.