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Volumn 119, Issue 17, 1997, Pages 3853-3860

Reduction of ferric iron could drive hydrogen tunneling in lipoxygenase catalysis: Implications for enzymatic and chemical mechanisms

Author keywords

[No Author keywords available]

Indexed keywords

FERRIC ION; HYDROGEN; ISOTOPE; LIPOXYGENASE INHIBITOR; ORGANOMETALLIC COMPOUND;

EID: 0030920947     PISSN: 00027863     EISSN: None     Source Type: Journal    
DOI: 10.1021/ja9632825     Document Type: Article
Times cited : (39)

References (65)
  • 1
    • 1842278287 scopus 로고    scopus 로고
    • note
    • D, the kinetic isotope effect measured by comparing the rate of reaction with protonated substrate to that with deuterated substrate; and 1-D, 2-D, one-dimension, two-dimension, respectively.
  • 2
    • 1842272427 scopus 로고    scopus 로고
    • note
    • The term "hydrogen transfer" is often used loosely to describe reactions involving hydrogen (atom), proton, or hydride particles, even though their chemical properties are remarkably different. Unless specifically mentioned, we will use the term "hydrogen" when referring to a particle that could be any one of the three - hydride, hydrogen atom, or proton.
  • 6
    • 1842400693 scopus 로고    scopus 로고
    • Calais, J. L., Kryachko, E., Eds.; Kluwer: Boston, in press
    • Lefebvre, R. In Conceptual Trends in Quantum Chemistry; Calais, J. L., Kryachko, E., Eds.; Kluwer: Boston, in press; Vol. II.
    • Conceptual Trends in Quantum Chemistry , vol.2
    • Lefebvre, R.1
  • 17
    • 1842306112 scopus 로고
    • Ph.D. Thesis, University of California, Berkeley
    • Rucker, J. B. Ph.D. Thesis, University of California, Berkeley, 1995.
    • (1995)
    • Rucker, J.B.1
  • 29
    • 1842384039 scopus 로고    scopus 로고
    • note
    • Researchers within the isotope effect field often consider the Bigeleisen-Mayer equation to be a semiclassical theory (as opposed to fully quantum mechanical). In order to avoid confusion with the use of the term in quantum mechanics, e.g., the WKB approximation, we will not use the term in this fashion in this paper.
  • 49
    • 1842318527 scopus 로고    scopus 로고
    • note
    • 1-(mD/mH)1/2 (e)
  • 54
    • 11744297921 scopus 로고
    • Miller, W. H. Science 1986, 233, 171-177.
    • (1986) Science , vol.233 , pp. 171-177
    • Miller, W.H.1
  • 55
    • 1842387002 scopus 로고    scopus 로고
    • note
    • The area of a triangle is linearly proportional to its height, therefore for a symmetric 1-dimensional barrier the energy of activation would be proportional to an integration of the potential over the reaction pathway. In this case, the ratio of energies of activation for H and D would be given by the ratio of the respective integrated potentials, with other constants canceling out.
  • 56
    • 1842388025 scopus 로고    scopus 로고
    • note
    • As a note, in the opposite scenario, whereby K(x) reaches a minimal value at x = 0 (i.e., a "loose transition state"), the height of the potential barrier (the "activation energy") is decreased compared to the one-dimensional model described above, and it is decreased to a greater extent for hydrogen than for deuterium. Since even the one-dimensional calculations produced isotope effects larger than the experimental results as seen in eq 7, this regime is obviously not the explanation for the isotope effects observed in the lipoxygenase reaction.
  • 61
    • 1842399744 scopus 로고
    • Ph.D. Dissertation Thesis, University of California, Berkeley
    • Glickman, M. H. Ph.D. Dissertation Thesis, University of California, Berkeley, 1994.
    • (1994)
    • Glickman, M.H.1


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.