Electron-Transfer Oxidation Properties of Unsaturated Fatty Acids and Mechanistic Insight into Lipoxygenases

作者: Hironori Kitaguchi , Kei Ohkubo , Seiji Ogo , Shunichi Fukuzumi

DOI: 10.1021/JP054648F

关键词:

摘要: Rate constants of photoinduced electron-transfer oxidation unsaturated fatty acids with a series singlet excited states oxidants in acetonitrile at 298 K were examined and the resulting rate (ket) evaluated light free energy relationship electron transfer to determine one-electron potentials (Eox) intrinsic barrier transfer. The ket values linoleic acid are same as corresponding methyl linoleate, linolenic acid, arachidonic leading Eox value (1.76 V vs SCE), which is significantly lower than that oleic (2.03 SCE) indicated by smaller those other acids. radical cation produced from state o...

参考文章(70)
Nicolai Lehnert, Edward I. Solomon, Density-functional investigation on the mechanism of H-atom abstraction by lipoxygenase Journal of Biological Inorganic Chemistry. ,vol. 8, pp. 294- 305 ,(2003) , 10.1007/S00775-002-0415-6
Shunichi Fukuzumi, Mari Nishimine, Kei Ohkubo, Nikolai V. Tkachenko, Helge Lemmetyinen, Driving Force Dependence of Photoinduced Electron Transfer Dynamics of Intercalated Molecules in DNA Journal of Physical Chemistry B. ,vol. 107, pp. 12511- 12518 ,(2003) , 10.1021/JP035023P
Hironori Kitaguchi, Kei Ohkubo, Seiji Ogo, Shunichi Fukuzumi, Direct ESR detection of pentadienyl radicals and peroxyl radicals in lipid peroxidation : Mechanistic insight into regioselective oxygenation in lipoxygenases Journal of the American Chemical Society. ,vol. 127, pp. 6605- 6609 ,(2005) , 10.1021/JA044345J
Shunichi Fukuzumi, Osamu Inada, Tomoyoshi Suenobu, Mechanisms of electron-transfer oxidation of NADH analogues and chemiluminescence. Detection of the keto and enol radical cations. Journal of the American Chemical Society. ,vol. 125, pp. 4808- 4816 ,(2003) , 10.1021/JA029623Y
Shunichi Fukuzumi, Hiroshi Miyao, Kei Ohkubo, Tomoyoshi Suenobu, Electron-transfer oxidation properties of DNA bases and DNA oligomers. Journal of Physical Chemistry A. ,vol. 109, pp. 3285- 3294 ,(2005) , 10.1021/JP0459763
Ian R. Gould, Deniz Ege, Jacques E. Moser, Samir Farid, Efficiencies of photoinduced electron-transfer reactions: role of the Marcus inverted region in return electron transfer within geminate radical-ion pairs Journal of the American Chemical Society. ,vol. 112, pp. 4290- 4301 ,(1990) , 10.1021/JA00167A027
Shunichi Fukuzumi, Naoya Satoh, Toshihiko Okamoto, Kiyomi Yasui, Tomoyoshi Suenobu, Yasuyo Seko, Mamoru Fujitsuka, Osamu Ito, Change in spin state and enhancement of redox reactivity of photoexcited states of aromatic carbonyl compounds by complexation with metal ion salts acting as Lewis acids. Lewis acid-catalyzed photoaddition of benzyltrimethylsilane and tetramethyltin via photoinduced electron transfer. Journal of the American Chemical Society. ,vol. 123, pp. 7756- 7766 ,(2001) , 10.1021/JA010125J
Shunichi Fukuzumi, Morifumi Fujita, Junzo Otera, Yukihiro Fujita, Electron-transfer oxidation of ketene silyl acetals and other organosilanes. Mechanistic insight into Lewis acid mediated electron transfer Journal of the American Chemical Society. ,vol. 114, pp. 10271- 10278 ,(1992) , 10.1021/JA00052A024
Chris M. McGinley, Wilfred A. van der Donk, Enzymatic hydrogen atom abstraction from polyunsaturated fatty acids. Chemical Communications. ,vol. 3, pp. 2843- 2846 ,(2003) , 10.1039/B311008G
Yan Zhang, Qing-Fen Gan, Elizabeth G. Pavel, Elliott Sigal, Edward I. Solomon, EPR Definition of the Non-Heme Ferric Active Sites of Mammalian 15-Lipoxygenases: Major Spectral Differences Relative to Human 5-Lipoxygenases and Plant Lipoxygenases and Their Ligand Field Origin Journal of the American Chemical Society. ,vol. 117, pp. 7422- 7427 ,(1995) , 10.1021/JA00133A015