Catalytic Functions of Artificial Enzyme Composed of Simple Vitamin B12 Model and Synthetic Bilayer Membrane.
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概要
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An artificial enzyme was constructed with a combination of the single-walled vesicle of <I>N</I>,<I>N</I>-dihexadecyl-<I>N</I><SUP>α</SUP>-[6-(trimethylammonio)hexanoyl]-L-alaninamide bromide (N<SUP>+</SUP>C<SUB>5</SUB>Ala2C<SUB>16</SUB>) and a simple vitamin Bi<SUB>12</SUB> model; (11-hydroxyimino-4,10-dipropyl-5,9-diazatrideca-4,9-dien-3-one oximato)cobalt, [Co(C<SUB>2</SUB>C<SUB>3</SUB>)(DO)(DOH)pn], or [<I>N</I>-(2-hydroxyiminocyclohexylidene)-<I>N</I>′-(cyclohexyliden-2-one oximato)-1,3-diaminopropane]cobalt, [Co(ch)(DO)(DOH)pn]. Carbon-skeleton rearrangement reactions of alkyl ligands bound to the cobalt complex were markedly favored in the single-walled vesicle, relative to the reactions in methanol and benzene, under anaerobic photolysis conditions at ordinary temperatures. The cobalt complex incorporated into the intramembrane domain is subjected to significant repression of its molecular motion and to desolvation as confirmed by fluorescence and fluorescence polarization measurements. The 1,2-migration of cyano and carboxylic ester groups involved in the alkyl ligands is plausibly enhanced by such effects.
- 公益社団法人 日本化学会の論文
著者
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Hisaeda Yoshio
Department Of Applied Chemistry Graduate School Of Engineering Kyushu University
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Murakami Yukito
Department Of Chemical Science And Technology Faculty Of Engineering Kyushu University
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Ohno Teruhisa
Department Of Applied Chemistry Faculty Of Engineering Kyushu Institute Of Technology
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Fan Sheng-di
Department Of Bio-engineering Dalian University For Nationalities Economical And Technological Devel
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Song Xi-Ming
Department of Organic Synthesis, Faculty of Engineering, Kyushu University
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Ohno Teruhisa
Department of Organic Synthesis, Faculty of Engineering, Kyushu University
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Hisaeda Yoshio
Department of Organic Synthesis, Faculty of Engineering, Kyushu University
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