메뉴 건너뛰기




Volumn 127, Issue 11, 2005, Pages 3855-3863

Switching the redox mechanism: Models for proton-coupled electron transfer from tyrosine and tryptophan

Author keywords

[No Author keywords available]

Indexed keywords

AMINO ACIDS; DATA ACQUISITION; DNA; PH EFFECTS; PROTEINS; REACTION KINETICS; REDOX REACTIONS;

EID: 15744375592     PISSN: 00027863     EISSN: None     Source Type: Journal    
DOI: 10.1021/ja044395o     Document Type: Article
Times cited : (223)

References (45)
  • 13
    • 15744388598 scopus 로고    scopus 로고
    • note
    • a. In addition, previous studies of PCET have concerned very different aspects and analyses; see, e.g., ref 12.
  • 18
    • 15744368692 scopus 로고    scopus 로고
    • note
    • Quantum mechanical calculations on the model complex in ref 10 were recently presented in ref 14. The authors discuss effects that cannot be accounted for in our semiclassical analysis based on experimental data, and although the agreements dominate, these authors have a somewhat different opinion from ours.
  • 20
    • 15744371070 scopus 로고    scopus 로고
    • note
    • (a) We have recently demonstrated qualitatively that we could switch the mechanism of PCET in a modified Ru-Tyr complex, although protonable groups on the Ru moiety complicated the situation and precluded a quantitative analysis; see ref 15b.
  • 25
    • 15744389533 scopus 로고    scopus 로고
    • note
    • a value the emission decay was biexponential, and at pH = 10.3 the amplitudes of the two kinetic components were equal. Note that the protonation state did not change on the timescale of the excited state lifetime, as shown by the pH-independence of the component lifetimes.
  • 29
    • 15744395228 scopus 로고    scopus 로고
    • note
    • In ref 17b a somewhat lower value of 3.7 was given, but the exact value is not critical for the present paper.
  • 35
    • 15744387958 scopus 로고    scopus 로고
    • note
    • A value from a single exponential fit at 570 nm. As the transient absorption changes from the deprotonation are convolved with those from the only somewhat faster initial oxidation, this is probably an upper limit of the time constant.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.