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Volumn 46, Issue 20, 2007, Pages 3714-3717

The mechanism of RNA strand scission: An experimental measure of the Brensted coefficient, βnuc

Author keywords

Acidity; Br nsted coefficients; Nucleotides; Reaction mechanisms; RNA cleavage

Indexed keywords

FLUORINE; NUCLEOPHILES; NUCLEOTIDES;

EID: 34250877408     PISSN: 14337851     EISSN: None     Source Type: Journal    
DOI: 10.1002/anie.200605124     Document Type: Article
Times cited : (20)

References (39)
  • 1
    • 0003604405 scopus 로고    scopus 로고
    • 3rd Ed, Cold Spring Harbor Laboratory Press, Cold Spring Harbor, NY
    • R. F. Gesteland, T. R. Cech, J. F. Atkins, The RNA World, 3rd Ed., Cold Spring Harbor Laboratory Press, Cold Spring Harbor, NY, 2006.
    • (2006) The RNA World
    • Gesteland, R.F.1    Cech, T.R.2    Atkins, J.F.3
  • 19
    • 0042121256 scopus 로고    scopus 로고
    • M. Zuker, Nucleic Acids Res. 2003, 31, 3406. The MFOLD server can be accessed at http://www.bioinfo.rpi.edu/applications/mfold.
    • M. Zuker, Nucleic Acids Res. 2003, 31, 3406. The MFOLD server can be accessed at http://www.bioinfo.rpi.edu/applications/mfold.
  • 23
    • 34250864822 scopus 로고    scopus 로고
    • a values, as they may be influenced by ionization of the bases at high pH.
    • a values, as they may be influenced by ionization of the bases at high pH.
  • 24
    • 34250838396 scopus 로고    scopus 로고
    • nuc.
    • nuc.
  • 30
    • 34250860491 scopus 로고
    • Eds, R. T. Morrison, R. N. Boyd, 4th Ed, Allyn and Bacon, Newton, MA
    • Organic Chemistry (Eds.: R. T. Morrison, R. N. Boyd), 4th Ed, Allyn and Bacon, Newton, MA, 1983.
    • (1983) Organic Chemistry
  • 33
    • 34250891099 scopus 로고    scopus 로고
    • Using the measured pKa value for the 2′-hydroxy group and the pKa of hydronium ion as an estimate for the pKa of the 2′-oxonium ion, we estimate βnuc as 0.59. This value likely underestimates βnuc for two reasons: 1) the neutral hydroxy group would experience less electrostatic repulsion with the reaction center than the oxyanion; 2 the nucleotidyl context of the hydroxy group likely decreases the pKa value of the 2′-oxonium ion relative to a hydronium ion. For example, ammonium ion has a pKa value of 10, but the 2′-nucleotidyl ammonium ion ionizes with pKa ≈ 6.2.[18
    • [18]
  • 36
    • 34250903946 scopus 로고    scopus 로고
    • nuc.
    • nuc.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.